Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-1
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Current and Voltage Sensors
EVT Series VoltageWatch
ECSJ Series CurrentWatch
Current Switch
EACR Series CurrentWatch
Current Sensor
7.0 Introduction
Product Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-2
7.1 EVT Series VoltageWatch Voltage Sensors
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-5
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-6
7.2 ECS Series CurrentWatch Current Switches
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-8
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-9
7.3 ECSJ Series CurrentWatch Current Switches
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-11
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-12
7.4 ECS7 Series CurrentWatch Current Switches
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-15
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-16
7.5 ECSTD Series CurrentWatch Current Switches
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-19
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-20
7.6 ECSD Series CurrentWatch Current Switches
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-23
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-24
7.7 EAC Series CurrentWatch Current Sensors
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-26
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-27
7.8 EACR Series CurrentWatch Current Sensors
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-30
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-31
7.9 EDC Series CurrentWatch Current Sensors
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-33
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-34
7.10 EGF Series CurrentWatch Current Sensors
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-37
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-38
7.11 EGFL Series CurrentWatch Current Sensors
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-42
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-43
For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
Unless otherwise noted, the products contained in this section should not
be used for functional safety applications. These products were not designed
or tested to IEC 60947-5-3 or recommended for functional safety.
V8-T7-2 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.0
Current and Voltage Sensors
Introduction
Product Selection Guide
EVT Series VoltageWatch
Voltage Sensors
ECS Series CurrentWatch
AC Current Switches
ECSJ Series CurrentWatch
AC Current Switches
ECS7 Series CurrentWatch
AC Current Switches
Page V8-T7-5
Overview
Eaton’s VoltageWatch™ sensor is a high-
performance, true RMS sensor for sensing
voltage in single- and three-phase
installations.
Applications
Detect below normal or “brown out” voltage
conditions; protect against possible motor
overheating
Identify phase-loss conditions by detecting
voltage reduction in one or more phases of a
three-phase motor
Monitor overvoltage conditions associated
with regenerative voltage to help in
diagnosing/avoiding motor drive issues
Detect voltage conditions that may cause
stress in or damage to soft starter
components (SCRs)
Product Features
True RMS output—allows for use in
situations where power supplied is
non-sinusoidal
Standard 4–20 mA loop powered output—
industry standard output works easily and
reliably with existing controllers
Input/output isolation—input and output
circuitry is electrically isolated for improved
safety
Compact DIN rail mount enclosure— space-
saving 35 mm wide enclosure mounts
quickly for an attractive installation
Voltage Range
120, 240, 480V
Approvals
UL®
CE (Pending)
RoHS Compliant
(Pending)
Page V8-T7-8
Overview
AC current switches for detecting
overcurrent condition.
Applications
Electronic proof of flow—current operated
switches eliminate the need for multiple
pipe or duct penetrations and are more
reliable than electro-mechanical pressure or
flow switches
Conveyors—detect jams and overloads
Lighting circuits—easier to install and more
accurate than photocells
Fans, pumps and heating elements—faster
response than temperature sensors
Critical motors
Ancillary equipment
Product Features
Universal outputs—NO or NC solid-state
switch for control circuits up to 240 Vac/dc,
compatible with most automation systems
Self-powered—cuts installation and
operating costs
Easily adjustable setpoint—increases
application flexibly and speeds start-up
Solid- or split-core housings—versions
tailored for each type of installation
LED indication—provides quick visual
indication of contact status
Built-in mounting feet—simple, two-screw
panel mount or attach with optional din-rail
mounting kit accessory
Current Range
Fixed or adjustable set point, 1–150A
Approvals
UL Listed
cUL® Listed
cULus
CE
Page V8-T7-11
Overview
Jumper selectable AC switches with
solid-state output.
Applications
Electronic proof of flow—current operated
switches eliminate the need for multiple
pipe or duct penetrations and are more
reliable than electro-mechanical pressure or
flow switches
Conveyors—detect jams and overloads
Lighting circuits—easier to install and more
accurate than photocells
Fans, pumps and heating elements—faster
response than temperature sensors
Critical motors
Ancillary equipment
Product Features
Choice of NO or NC solid-state outputs—
1A at 240 Vac
0.15A at 30 Vdc
15A at 120 Vac
3A at 120 Vac
0.15A at 30 Vdc, dual contact
Self-powered—cuts installation and
operating costs
Easily adjustable setpoint—speeds
start-up and reduces inventory
Solid- or split-core housings—choose the
appropriate version for your application
LED indication—provides quick visual
indication of output contact status
Built-in mounting feet—provide for a secure
installation
Current Range
Adjustable set point, 1.75–200A
Approvals
UL Listed
cUL Listed
cULus
CE
Page V8-T7-15
Overview
Self-calibrating AC current switch with
solid-state outputs.
Applications
Conveyors—use current overload models to
detect conveyor jams caused by scenarios
such as side-by-sides
Electronic proof of flow—more reliable than
electro-mechanical pressure or flow
switches, with no need for pipe or duct
penetrations
Pump protection—provides overload (jams)
and underload (suction loss) indication
Product Features
Self-powered and self-calibrating—
reduces installation costs
Status monitoring, overload and operating
window options—choose the operating
style that matches your application
Universal output—AC or DC compatibility
with any automation system
Current Range
Self-calibrating set point, 1.5–150A
Approvals
UL Listed
cUL Listed
cULus
CE
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-3
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7.0
Current and Voltage Sensors
Introduction
ECSTD Series CurrentWatch
AC Current Switches
ECSD Series CurrentWatch
DC Current Switches
EAC Series CurrentWatch
AC Current Sensors
EACR Series CurrentWatch
RMS Current Sensors
Page V8-T7-19
Overview
AC current switches with time delay.
Applications
Motor protection—serves as an electronic
proof-of-operation; detects current draw
changes in motors when they encounter
problems such as pumps running dry or
pending bearing failure; non-intrusive and
less expensive to install than differential
pressure flow sensors or thermal switches
High inrush or temporary overload
current—adjustable start-up/delay timer
allows 0–15 second delay to eliminate
nuisance trips from high inrush or short
overload conditions
Product Features
Adjustable start-up/delay timer—field
adjustable from 0–15 seconds to eliminate
nuisance alarms due to start-up inrush or
temporary overcurrent conditions
Choice of NO/NC AC or universal outputs—
contact ratings of 1.0A at 240 Vac or
universal outputs of 0.15A at 240 Vac/dc
(NO models) and 0.2A at 135 Vac/dc (NC
models) for use with most standard motor
control systems
Improved ease of installation and use—
self-powered, split-core models simplify
installation, 1.0A AC rating eliminates need
for time delay relay, and status LED provides
visual indication of setpoint trip and
contact action
Current Range
Adjustable set point, 1.5–200A
Approvals
UL Listed
cUL Listed
CE
(ECSTD401 and 4025C—No approval)
(Pending)
Page V8-T7-23
Overview
DC switch with solid-state or mechanical
relay output.
Applications
Electronic proof of flow—current operated
switches eliminate the need for multiple
pipe or duct penetrations
Welders—Instant indication of equipment
status
Large drive motors—provide monitoring for
field loss protection
Power supplies—detect and signal over-
current condition before equipment damage
UPS—monitors battery output
Ancillary equipment
Product Features
Choice of mechanical relay or
solid-state outputs—
SPDT (Form C) relay, 5.0A at 240 Vac
or 30 Vdc
Solid-state, NO, 0.15A at 240 Vac/dc
Easily adjustable setpoint—speeds start-up
and reduces inventory
Compact, one-piece design—easily fits in
crowded control panels
Input isolation—safer than shunt/relay
combinations
Adaptive hysteresis—hysteresis is five
percent of setpoint, allowing closer control
than fixed-hysteresis switches
Solid-core housings
Current Range
Varies by model
Approvals
UL Listed
cUL Listed
CE
Page V8-T7-26
Overview
AC current sensor with analog outputs and
power supply options.
Applications
Automation equipment—analog current
reading for remote monitoring and software
alarms
Data loggers—self-powered sensor helps
conserve data logger batteries
Panel meters—simple connection displays
power consumption
Product Features
Highly accurate—factory matched and
calibrated single-piece sensor is more
accurate than traditional two-piece, field-
installed solutions
Average responding—“average
responding” algorithm gives an RMS output
on pure sine waves, perfect for constant
speed (linear) loads
Jumper selectable ranges—the ability to
change input ranges reduces inventory and
eliminates zero and span
Isolation—output is magnetically isolated
from the input for safety and elimination of
insertion loss (voltage drop)
Current Range
0–200A
Approvals
UL Listed
cUL Listed
cULus (except EACP models)
CE marked (except EACP models)
(EACP models not listed)
Page V8-T7-30
Overview
True RMS AC current sensing with
4–20 mA output.
Applications
VFD controlled loads—monitoring Vdc
output indicates how the motor and
attached load are operating
SCR controlled loads—accurate
measurement of phase angle fired or burst
fired (time proportioned) SCRs, with faster
current measurement than temperature
sensors
Switching power supplies and electronic
ballasts—true RMS sensing is the most
accurate way to measure power supply or
ballast input power
Product Features
True RMS output—true RMS technology is
accurate on distorted waveforms like VFD or
SCR outputs
Jumper-selectable ranges—reduces
inventory and eliminates zero and span
Isolation—output is magnetically isolated
from the input for safety and elimination of
insertion loss (voltage drop)
Current Range
0–200A true RMS
Approvals
UL Listed
cUL Listed
cULus
CE
V8-T7-4 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.0
Current and Voltage Sensors
Introduction
EDC Series CurrentWatch
DC Current Sensors
EGF Series CurrentWatch
Ground Fault Sensors
EGFL Series CurrentWatch
Ground Fault Sensors
Page V8-T7-33
Overview
Current sensing for DC loads up to 300A
with analog outputs.
Applications
Battery banks—monitors load current,
monitors charging current and verifies
operation
Transportation—measures traction power
or auxiliary loads
Electric heating elements—monitors heater
loads with a faster response time than
temperature sensors
Product Features
Jumper-selectable ranges—reduces
inventory and eliminates zero or span pots
Isolation—output is magnetically isolated
from the input for safety, also eliminating
insertion loss (voltage drop)
Internal power regulation—cuts installation
costs and works well, even with
unregulated power
Split core design and built-in mounting
brackets—makes installation quick and
easy
Current Range
0–400A
Approvals
UL Listed (Pending)
CE
Page V8-T7-37
Overview
Ground fault sensors with solid-state or
mechanical relay outputs.
Applications
Personnel protection (typically 5 mA)—
detects sensitive ground fault conditions,
which could cause injury to people, and
functions as a sensor and alarm trigger
when applied as an input to an overall
ground fault protection system
Equipment protection (typically 10 or
30 mA)—for applications where personnel
protection is not the primary concern, higher
setpoint capability helps eliminate
nuisance tripping while still providing
adequate ground fault detection to protect
machine electronics
Product Features
Broad range of options to meet application
needs—NO or NC, solid-state or
mechanical relays, normally energized or
normally de-energized contacts
Setpoint options maximize ease-of-use and
application flexibility—field selectable 5, 10
or 30 mA setpoints on the EGF “Tri-set”
models make user adjustments fast, sure
and convenient
Compatible with standard equipment—
application on single- and three-phases
systems, ideal for use with shunt trip
breakers, and magnetically isolated from
monitored circuit and control power
Current Range
Fixed or adjustable 5/10/30 mA trip
Approvals
UL Recognized
CE
Page V8-T7-42
Overview
Ground fault sensors with mechanical
relays.
Applications
Personnel protection (typically 5 mA)—
detects sensitive ground fault conditions,
which could cause injury to people
Equipment protection (typically 10 or
30 mA)—for applications where personnel
protection is not the primary concern, higher
setpoint capability helps eliminate nuisance
tripping
Regulatory—meets requirements as
stipulated by governmental and industrial
regulatory groups for ground fault sensing
Product Features
Broad range of options to meet application
needs—mechanical relays, normally
energized or normally de-energized contacts
Setpoint options maximize ease-of-use and
application flexibility—field selectable 5, 10
or 30 mA setpoints on the EGFL “tri-set”
models make user adjustments fast, sure
and convenient
Compatible with standard equipment—
application on single- and three-phase
systems, ideal for use with shunt trip
breakers, and magnetically isolated from
monitored circuit and control power
Current Range
Tri-Set Adjustable, 5, 10 or 30 mA
Approvals
UL Approved
cULus
CE
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-5
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.1
Current and Voltage Sensors
VoltageWatch EVT Series
EVT Series VoltageWatch Voltage Sensors
Contents
Description Page
EVT Series VoltageWatch Voltage Sensors
Standards and Certifications . . . . . . . . . . . . . . V8-T7-6
Catalog Number Selection . . . . . . . . . . . . . . . . V8-T7-6
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-6
Technical Data and Specifications . . . . . . . . . . V8-T7-7
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-7
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-7
EVT Series VoltageWatch Voltage Sensors
Product Description
Eaton’s VoltageWatch™
sensor is a high-performance,
true RMS sensor for sensing
voltage in single- and three-
phase installations.
Applicable on nominal circuits
of 120V, 240V and 480V, this
voltage sensor provides a
fully isolated analog output
proportional to rated nominal
voltage in both sinusoidal and
non-sinusoidal (variable
frequency) situations. It is
housed in a slim, compact,
easy-to-install DIN rail mount
enclosure.
Ideal for situations where
power quality is of interest or
concern, the VoltageWatch
sensor facilitates monitoring
of supply voltage levels,
identifying undervoltage or
overvoltage conditions, and
helping to protect critical
motors and electronics.
Designed with an industry-
standard 4–20 mA output,
VoltageWatch is easily
coupled to a data logger,
panel meter or PLC to enable
basic trending of operational
status of low voltage circuits
up to real-time monitoring
and reporting of supply
voltage levels.
Application Description
True RMS Voltage Monitoring
●Detect below normal or
“brown out” voltage
conditions; protect against
possible motor overheating
●Identify phase-loss
conditions by detecting
voltage reduction in one or
more phases of a three-
phase motor
●Monitor overvoltage
conditions associated with
regenerative voltage to
help in diagnosing/avoiding
motor drive issues
●Detect voltage conditions
that may cause stress in or
damage to soft starter
components (SCRs)
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—Phase Loss
Features
●True RMS Output—
Allows for use in situations
where power supplied is
non-sinusoidal, such as
VFD applications, poor
power quality installations
or other electrically harsh/
challenging environments
●Standard 4–20 mA Loop
Powered Output—
Industry standard output
works easily and reliably
with existing controllers,
data loggers and SCADA
equipment
●Input/Output Isolation—
Input and output circuitry is
electrically isolated for
improved safety
●Compact DIN Rail Mount
Enclosure—Space-saving
35 mm wide enclosure
mounts quickly for an
attractive installation
PLC
24 Vdc Supply
–+
VTR
VTR
VTR
480 Vac
500 Vac
460 Vac
Zero Vac 4 mA Transducer Output
AC Voltage
Phase to Phase
20 mA Transducer Output
19.36 mA Transducer Output
18.72 mA Transducer Output
Motor
Control
Signal
Motor
Starter
V8-T7-6 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.1
Current and Voltage Sensors
VoltageWatch EVT Series
Standards and Certifications
●UL
●CE (Pending)
●RoHS Compliant
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Catalog Number Selection
VoltageWatch EVT Series—Top Terminal Current Sensors
Product Selection
VoltageWatch EVT Series—Top Terminal Current Sensors
(Pending)
Power Supply Output Signal Nominal Voltage Catalog Number
24 Vdc loop powered 4–20 mA 120 EVT1-4120-24L
240 EVT3-4420-24L
480 EVT4-4420-24L
EVT 1 - 420 - 24L
Standard Family Name
EVT = VoltageWatch sensor
Nominal Range
1 = 120V
3 = 240V
4 = 480V
Output Type
420 = 4–20 mA
Supply Voltage
24L = 24V Loop powered
EVT Series
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-7
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7.1
Current and Voltage Sensors
VoltageWatch EVT Series
Technical Data and Specifications
VoltageWatch EVT Series
Wiring Diagram
VoltageWatch EVT Series
Dimensions
Approximate Dimensions in Inches (mm)
Complete Unit
Description Specification
Power supply 24 Vdc loop-powered
Input 120V, 240V, 480V
Input over-range +15% of nominal range
Output 4–20 mA proportional; capped at 24 mA maximum
Response time 250 ms (to 90% value)
Accuracy <1%
Linearity <0.5%
Loading <500 ohms
Isolation voltage 2500 Vac
Frequency range 40 Hz–5 kHz
Operating temperature –22° to 140°F (–30° to 60°C)
Mounting DIN rail compatible
Case UL 94 V0 flammability rated; noncorrosive thermoplastic
Environmental 14° to 122°F (–10° to 50°C), 0–95% RH noncondensing
EMC/immunity EN50081-1, EN50082-2
Ripple <1% (peak to peak)
Listings UL/cUL and CE pending
+
-
(–)(+)
24 Vdc Power
(+)
(–)
Load
Controller
Meter, etc.
Output
Line Voltage
(120, 240, 480)
2.66 (67.6)
3.53 (89.7) 1.40 (35.6)
2.39 (60.7)
1.77
(45.0)
V8-T7-8 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.2
Current and Voltage Sensors
CurrentWatch ECS Series
ECS Series CurrentWatch Current Switches
Contents
Description Page
ECS Series CurrentWatch Current Switches
Standards and Certifications . . . . . . . . . . . . . . . V8-T7-9
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-9
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-9
Technical Data and Specifications . . . . . . . . . . V8-T7-10
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-10
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-10
ECS Series CurrentWatch Current Switches
Product Description
The CurrentWatch™ ECS
Series from Eaton’s electrical
sector is a family of solid-
state adjustable current
switches, ideal for providing
status information on
electrical equipment. The
ECS is excellent for new
installations, where the
conductors run through the
housing, requiring no cutting.
These switches are also ideal
for retrofits, since split-core
models can be opened to fit
around existing conductors.
The current switch is
accurate, reliable and easy
to install.
The ECS can sense
continuous currents from
1 to 150A and does not
require any supply voltage,
as the power required is
induced from the monitored
conductor. The output is a
non-polarity-sensitive solid-
state contact for switching
AC and DC circuits up to
240 Vac/dc. This switch also
includes an LED indicating
two states: on and below trip
point, and above trip point
with contacts energized. All
ECS Series switches carry an
unconditional five-year
warranty.
Any change in current can be
sensed with the ECS Series.
A change in current may
indicate motor failure, belt
loss/slippage or mechanical
failure. Any of these events
can cause the current to drop
significantly, tripping the
switch and notifying the
controller.
Application Description
Typical Applications
●Electronic Proof of
Flow—Current operated
switches eliminate the
need for multiple pipe or
duct penetrations and are
more reliable than electro-
mechanical pressure or
flow switches
●Conveyors—Detect jams
and overloads
●Lighting Circuits—Easier
to install and more
accurate than photocells
●Fans, Pumps and Heating
Elements—Faster
response than temperature
sensors
●Critical Motors
●Ancillary Equipment
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—
Pump Jam and Suction Loss Protection
Features
●Universal Outputs—NO
or NC solid-state switch for
control circuits up to 240
Vac/dc, compatible with
most automation systems
●Self-Powered—Cuts
installation and operating
costs
●Easily Adjustable
Setpoint—Increases
application flexibly and
speeds start-up
●Solid- or Split-Core
Housings—Versions
tailored for each type of
installation
●LED Indication—Provides
quick visual indication of
contact status
●Built-In Mounting Feet—
Simple, two-screw panel
mount or attach with
optional DIN-rail mounting
kit accessory
Jam
AMPS
Overload Setpoint
Current Switch
Motor
Starter
Digital
Input
PLC
B/I Card
Motor
Off
Normal Operation
Time
Motor
Control
Signal
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-9
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7.2
Current and Voltage Sensors
CurrentWatch ECS Series
Standards and Certifications
●UL Listed
●cUL Listed
●CE Certified
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
ECS Series CurrentWatch Current Switches
Top Terminal Current Switches
Accessories
ECS Series CurrentWatch
Current Switches
Note
1 Sensor pictured for reference and not included in kit.
Power Supply Aperture Size Output Signal Setpoint and LED Configuration Catalog Number
Solid-Core Housing
Self powered
(no external power needed)
0.74 in (19 mm) Normally open Adjustable 1–150A setpoint with LED ECSNOASC
Fixed 1.0A setpoint no LED ECSNOFSC
Fixed 5.5A setpoint no LED ECSNOFSCY1
Normally closed Adjustable 1–150A setpoint with LED ECSNCASC
Fixed 1.0A setpoint no LED ECSNCFSC
Split-Core Housing
Self powered
(no external power needed)
0.85 in (21.6 mm) Normally open Adjustable 1.75–150A setpoint with LED ECSNOASP
Fixed 1.5A setpoint no LED ECSNOFSP
Normally closed Adjustable 1.75–150A setpoint with LED ECSNCASP
Fixed 1.5A setpoint no LED ECSNCFSP
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Solid-Core Housing
Split-Core Housing
DIN Rail
Mounting Kit
V8-T7-10 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.2
Current and Voltage Sensors
CurrentWatch ECS Series
Technical Data and Specifications
ECS Series CurrentWatch Current Switches
Wiring Diagram
ECS Series CurrentWatch Current Switches
Normally open (NO) models shown
Dimensions
Approximate Dimensions in Inches (mm)
Solid-Core Housing Split Core Housing
Description Specification
Power supply Self-powered—no power supply needed
Output Magnetically isolated solid-state switch
Output rating NO version: 0.15A at 240 Vac/dc
NC version: 0.2A at 135 Vac/dc
Models ending Y1: 5.0A, 125 Vac, 30 Vdc
Off-state leakage <10 μA
Response time 120 ms
Setpoint range Solid-core housings: 1–150A
Split-core housings: 1.75–150A
Hysteresis 5% of setpoint
Description Specification
Overload Fixed setpoint, NO models: 6 sec. at 500A; 1 sec. at 1000A
All other models: 6 sec. at 400A; 1 sec. at 1000A
Maximum continuous Amps: 250A
Isolation voltage UL listed to 1270 Vac, tested to 5000 Vac
Frequency range 6–100 Hz
Sensing aperture Solid-core housings: 0.74 in (19 mm)
Split-core housings: 0.85 in (21.6 mm)
Housing UL94 V0 flammability rated
Environmental Operating temperature: –58° to 122°F (–50° to 50°C)
Humidity: 0–95% RH, non-condensing
3.50
(88.9)
3.03
(77.0)
0.93
(23.6)
0.19 Dia.
(4.8) 2.40
(61.0)
2.18
(55.4)
0.74 Dia.
(19)
0.85 (21.6)
0.85 (21.6)
3.53
(89.7)
2.40
(61)
3.04
(77.2) 0.19 Dia.
(4.8)
2.25
(57.2)
1.19
(30.2)
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-11
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.3
Current and Voltage Sensors
CurrentWatch ECSJ Series
ECSJ Series CurrentWatch Current Switches
Contents
Description Page
ECSJ Series CurrentWatch Current Switches
Standards and Certifications . . . . . . . . . . . . . . V8-T7-12
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-12
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-13
Technical Data and Specifications . . . . . . . . . . V8-T7-13
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-14
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-14
ECSJ Series CurrentWatch Current Switches
Product Description
The CurrentWatch ECSJ
Series current operated
switches from Eaton’s
electrical sector provide the
same dependable indication
of status offered by the
CurrentWatch ECS Series,
but with the added benefit of
increased setpoint precision.
A choice of three, jumper-
selectable input ranges
allows the ECSJ Series to be
tailored to an application,
providing more precise
control through improved
setpoint resolution. Self-
powering, isolated solid-state
outputs, 1–6A, 6–40A and
40–200A input ranges, and a
choice of split- or solid-core
enclosures are standard.
For typical applications of the
Current
Watch ECSJ Series,
see listing on this page.
Application Description
Typical Applications
●Electronic Proof of
Flow—Current operated
switches eliminate the
need for multiple pipe or
duct penetrations and are
more reliable than electro-
mechanical pressure or
flow switches
●Conveyors—Detect jams
and overloads
●Lighting Circuits—Easier
to install and more
accurate than photocells
●Fans, Pumps and Heating
Elements—Faster
response than temperature
sensors
●Critical Motors
●Ancillary Equipment
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—
Pump Jam and Suction Loss Protection
Features
●Choice of NO or NC
Solid-State Outputs—
●1A at 240 Vac
●0.15A at 30 Vdc
●15A at 120 Vac
●3A at 120 Vac
●0.15A at 30 Vdc, dual
contact
●Self-Powered—Cuts
installation and operating
costs
●Easily Adjustable
Setpoint—Speeds start-up
and reduces inventory
●Solid- or Split-Core
Housings—Choose the
appropriate version for your
application
●LED Indication—Provides
quick visual indication of
output contact status
●Built-In Mounting Feet—
Provide for a secure
installation
●UL, cUL and CE
Approved—Accepted
worldwide
Jam
AMPS
Overload Setpoint
Current Switch
Motor
Starter
Digital
Input
PLC
B/I Card
Motor
Off
Normal Operation
Time
Motor
Control
Signal
V8-T7-12 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.3
Current and Voltage Sensors
CurrentWatch ECSJ Series
Standards and Certifications
●UL Listed
●cUL Listed
●CE Certified
●UL 508 Industrial Control
Equipment (USA and
Canada)
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
ECSJ Series CurrentWatch Current Switches
Front and Top Terminal Switches
Note
1 Unit features built-in heatsink that adds to height. See dimension drawings on Page V8-T7-14 for details.
Power Supply Aperture Size Output Type, Voltage and Rating Setpoint and LED Configuration Catalog Number
Solid-Core Housing with Front Terminal
Self-powered
(no external power needed)
0.55 in (14 mm) Normally open, 1A at 240 Vac Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ400SC
Normally open, 15A at 120 Vac,
10A at 240 Vac
Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ406SC 1
Normally closed, 1A at 240 Vac Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ401SC
Normally closed, 15A at 120 Vac,
10A at 240 Vac
Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ407SC 1
Dual contact, NO and NC,
0.15A at 30 Vdc
Adjustable 1–6, 6–40 or 40–175A
setpoint without LED
ECSJ430SC 1
Normally open, 0.15A at 30 Vdc Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ420SC
Adjustable 1–6, 6–40 or 40–175A
setpoint without LED
ECSJ424SC
Normally closed, 0.15A at 30 Vdc Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ421SC
Solid-Core Housing with Top Terminal
Self-powered
(no external power needed)
0.74 in (19 mm) Normally open, 3A at 120 Vac Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ404SC
Normally closed, 3A at 120 Vac Adjustable 1–6, 6–40 or 40–175A
setpoint with LED
ECSJ405SC
Split-Core Housing
Self-powered
(no external power needed)
0.85 in (21.6 mm) Normally open, 1A at 240 Vac Adjustable 1.75–6, 6–40 or 40–200A
setpoint with LED
ECSJ402SP
Normally closed, 1A at 240 Vac Adjustable 1.75–6, 6–40 or 40–200A
setpoint with LED
ECSJ403SP
Normally open, 0.15A at 30 Vdc Adjustable 1.75–6, 6–40 or 40–200A
setpoint with LED
ECSJ422SP
Normally closed, 0.15A at 30 Vdc Adjustable 1.75–6, 6–40 or 40–200A
setpoint with LED
ECSJ423SP
Solid-Core Housing
with Front Terminal
Solid-Core Housing
with Top Terminal
Split-Core Housing
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-13
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7.3
Current and Voltage Sensors
CurrentWatch ECSJ Series
Accessories
ECSJ Series CurrentWatch
Current Switches
Technical Data and Specifications
ECSJ Series CurrentWatch Current Switches
Overload Ratings
Note
1Sensor pictured for reference and not included in kit.
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Description AC Solid-State Output Specification DC Solid-State Output Specification
Power supply Self-powered—no power supply needed Self-powered—no power supply needed
Output Isolated solid-state switch Isolated solid-state switch
Output rating
Standard models 1.0A at 240 Vac 0.15A at 30 Vdc
High current
switching models
ECSJ404SC and ECSJ405SC: 3.0A at 120 Vac ECSJ430SC: 0.15A at 30 Vdc, dual contact, NO and NC
Very high current
switching models
ECSJ406SC and
ECSJ407SC: 15A at 120 Vac, 10A at 240 Vac
—
Off-state leakage NO models: <10 μA
NC models: 2.5 mA
NO models: <10 μA
NC models: 2.5 mA
Response time 40–120 ms 40–120 ms
Setpoint range (adjustable) Solid-core models: 1–6, 6–40 and 40–175A
Split-core models: 1.75–6, 6–40 and 40–200A
Solid-core models: 1–6, 6–40 and 40–175A
Split-core models: 1.75–6, 6–40 and 40–200A
Hysteresis Low: 6%; mid: 4%; high: 3% Low: 6%; mid: 4%; high: 3%
Isolation voltage UL listed to 1270 Vac, tested to 5000 Vac UL listed to 1270 Vac, tested to 5000 Vac
Frequency range 6–100 Hz 6–100 Hz
Sensing aperture Solid-core, front terminal models: 0.55 in (14 mm)
Solid-core, top terminal models: 0.74 in (19 mm)
Split-core models: 0.85 in (21.6 mm) sq.
Solid-core, front terminal models: 0.55 in (14 mm)
Solid-core, top terminal models: 0.74 in (19 mm)
Split-core models: 0.85 in (21.6 mm) sq.
Housing UL94 V0 flammability rated UL94 V0 flammability rated
Environmental Operating temperature: –58° to 122°F (–50° to 50°C)
Humidity: 0–95% RH, non-condensing
Operating temperature: –58° to 122°F (–50° to 50°C)
Humidity: 0–95% RH, non-condensing
Maximum Amperes
Housing Range Six Seconds One Second
Solid-core 1–6A 400A 600A
6–40A 500A 800A
40–175A 800A 1200A
Split-core 1.75–6A 400A 600A
6–40A 500A 800A
40–200A 800A 1200A
DIN Rail
Mounting Kit
V8-T7-14 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.3
Current and Voltage Sensors
CurrentWatch ECSJ Series
Wiring Diagrams 12
All Normally Open (NO) Models
All Normally Closed (NC) Models
ECSJ430SC (Dual Contact, NO and NC)
Dimensions
Approximate Dimensions in Inches (mm)
All Solid-Core Models with Front Terminals
Except ECSJ406SC and ECSJ407SC
ECSJ406SC and ECSJ407SC Solid-Core
Models with Front Terminals
Notes
1Terminals are #6 screws.
2DC contacts are polarity sensitive.
All Solid-Core Models with Top Terminals
All Split-Core Models
Output
Setpoint
SmartLED
Range Jumper
None
LOW MID HIGH
R
Output
Setpoint
SmartLED
Range Jumper
None
LOW MID HIGH
R
Output
Setpoint
Range Jumper
None
LOW MID HIGH
SmartLED
R
2.75
(69.9)
0.92 (23.4)
2.16
(54.9)
3.30
(83.8)
2.18
(55.4)
0.55
(14)
Dia.
0.19
(4.8)
Dia.
Heatsink
2.75
(69.9)
0.92
(23.4)
0.19
(4.8)
dia.
2.16
(54.9)
0.55
(14.0)
dia.
3.30
(83.8)
2.49
(63.2) 2.18
(55.4)
3.50
(88.9)
3.03
(77.0)
0.93
(23.6)
0.19 Dia.
(4.8) 2.40
(61.0)
2.18
(55.4)
0.74 Dia.
(19)
0.85 (21.6)
0.85 (21.6)
3.53
(89.7)
2.40
(61)
3.04
(77.2) 0.19 Dia.
(4.8)
2.25
(57.2)
1.19
(30.2)
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-15
For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
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7.4
Current and Voltage Sensors
CurrentWatch ECS7 Series
ECS7 Series CurrentWatch Current Switches
Contents
Description Page
ECS7 Series CurrentWatch Current Switches
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-16
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-16
Technical Data and Specifications . . . . . . . . . . V8-T7-17
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-18
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-18
ECS7 Series CurrentWatch Current Switches
Product Description
The CurrentWatch ECS7
Series load monitoring
switches from Eaton’s
electrical sector are designed
for overload, underload or
operating window
applications. Upon sensing an
average operating current,
the ECS7 Series self-learns
and establishes a limit-alarm
trip point based on ±15% of
the average expected current
draw. The ECS7 Series is
available in solid- or split-core
housing styles.
For typical applications of the
Current
Watch ECS7 Series,
see listing on this page.
Application Description
Typical Applications
●
Conveyors
—Use current
overload models to detect
conveyor jams caused by
scenarios such as
side-by-
sides
●Electronic Proof of
Flow—More reliable than
electro-mechanical
pressure or flow switches,
with no need for pipe or
duct penetrations
●Pump Protection—
Provides overload (jams)
and underload (suction
loss) indication
Features
●Self-Powered and Self-
Calibrating—Reduces
installation costs
●Status Monitoring,
Overload and Operating
Window Options—
Choose the operating style
that matches your
application
●Universal Output—AC
or DC compatibility with
any automation system
●UL, cUL and CE
Approved—Accepted
worldwide
Standards and Certifications
●UL Listed
●cUL Listed
●CE Certified
●UL 508 Industrial Control
Equipment (USA and
Canada)
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
For the most current information
on this product, visit our Web site:
www.eaton.com
V8-T7-16 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.4
Current and Voltage Sensors
CurrentWatch ECS7 Series
Product Selection
ECS7 Series CurrentWatch Current Switches
Front and Top Terminal Switches
Accessories
ECS7 Series CurrentWatch
Current Switches
Notes
1 Output is closed when current is within ±15% window.
2 Sensor pictured for reference and not included in kit.
Power Supply Output Type Aperture Size Intelligent Logic Catalog Number
Solid-Core Housing
Self-powered
(no external power needed)
Normally open 0.74 in (19 mm) Over/underload, 1.5–150A self-calibrating ECS701SC 1
Overload only, 1.5–150A self-calibrating ECS700SC
Underload only, 1.5–150A self-calibrating ECS702SC
Split-Core Housing
Self-powered
(no external power needed)
Normally open 0.85 in (21.6 mm) Over/underload, 2.8–150A self-calibrating ECS711SP 1
Overload only, 2.8–150A self-calibrating ECS710SP
Underload only, 2.8–150A self-calibrating ECS712SP
Description Catalog Number
DIN rail mounting kit 2EDINKIT
Solid-Core Housing
Split-Core Housing
DIN Rail
Mounting Kit
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-17
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7.4
Current and Voltage Sensors
CurrentWatch ECS7 Series
Technical Data and Specifications
ECS7 Series CurrentWatch Current Switches
Current Switch Operation
Underload Only Models Overload Only Models
Over/Underload Models 1
Note
1Output is closed when current is within ±15% window.
Description Specification
Power supply Self-powered—no power supply needed
Output Magnetically isolated solid-state switch
Output rating Normally open (NO) models: 0.3A at 135 Vac/dc
Not polarity sensitive
Off-state leakage <10 μA
Response time 200 ms
Setpoint range Solid-core models: 1.5 to 150A
Split-core models: 2.8 to 150A
Setpoint Overload models: +15% of load
Underload models: –15% of load
Operating window: ±5% of setpoint
Hysteresis 5% of setpoint
Overload 500A at 6 sec., 1000A at 1 sec.
Isolation voltage UL listed to 1270 Vac, tested to 5000 Vac
Frequency range 6–100 Hz
Sensing aperture Solid-core models: 0.74 in (19 mm) dia.
Split-core models: 0.85 in (21.6 mm) sq.
Housing UL94 V0 flammability rated
Environmental Operating temperature: –58° to 122°F (–50° to 50°C)
Humidity: 0–95% RH, non-condensing
Amps
Output Open (LED Off)
Output Closed (LED Slow)
Output Open (LED Fast)
Calibration Point
Amps
Output Open
(LED Off)
Output Closed (LED Slow)
115% of Calibration Point
Calibration Point
(LED Fast)
Amps
Output Closed
Output Closed
(LED Off)
Output Open
(LED Slow)
115% of Calibration Point
(LED Fast)
85% of Calibration Point
(LED Slow)
V8-T7-18 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.4
Current and Voltage Sensors
CurrentWatch ECS7 Series
Wiring Diagram
ECS7 Series CurrentWatch Current Switches
Dimensions
Approximate Dimensions in Inches (mm)
Solid-Core Housing Split-Core Housing
3.50
(88.9)
3.03
(77.0)
0.93
(23.6)
0.19 Dia.
(4.8) 2.40
(61.0)
2.18
(55.4)
0.74 Dia.
(19)
0.85 (21.6)
0.85 (21.6)
3.53
(89.7)
2.40
(61)
3.04
(77.2) 0.19 Dia.
(4.8)
2.25
(57.2)
1.19
(30.2)
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-19
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.5
Current and Voltage Sensors
CurrentWatch ECSTD Series
ECSTD Series CurrentWatch Current Switches
Contents
Description Page
ECSTD Series CurrentWatch Current Switches
Standards and Certifications . . . . . . . . . . . . . . V8-T7-20
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-20
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-21
Technical Data and Specifications . . . . . . . . . . V8-T7-21
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-22
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-22
ECSTD Series CurrentWatch Current Switches
Product Description
The CurrentWatch ECSTD
Series from Eaton’s electrical
sector is a family of high
performance current-
operated switches with field-
adjustable time delay to help
minimize
nuisance trips
during start-up and operation.
Designed for motor status
applications where setpoint
accuracy
and repeatability are
critical, the ECSTD Series
offers a linear setpoint
characteristic and constant
hysteresis.
Standard features
include self-powering,
jumper-selectable ranges and
a choice of outputs and
housing styles.
For typical applications of the
Current
Watch ECSTD Series,
see listing on this page.
Application Description
Typical Applications
●Motor Protection—
Serves as an electronic
proof-of-operation; detects
current draw changes in
motors when they
encounter problems such
as pumps running dry or
pending bearing failure;
non-intrusive and less
expensive to install than
differential pressure flow
sensors or thermal
switches; much quicker
response time than Class
10 overload relays
●High Inrush or
Temporary Overload
Current—Adjustable start-
up/delay timer allows 0–15
second delay to eliminate
nuisance trips from high
inrush or short overload
conditions
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—
Isolated Alarm System Interfacing
Features
●Adjustable Start-Up/
Delay Timer—Field
adjustable from 0–15
seconds to eliminate
nuisance alarms due to
start-up inrush or
temporary overcurrent
conditions
●Choice of NO/NC AC or
Universal Outputs—
Contact ratings of 1.0A at
240 Vac or universal
outputs of 0.15A at 240
Vac/dc (NO models) and
0.2A at 135 Vac/dc (NC
models) for use with most
standard motor control
systems
●Improved Ease of
Installation and Use—
Self-powered, split-core
models simplify
installation, 1.0A AC rating
eliminates need for time
delay relay, and status LED
provides visual indication
of setpoint trip and contact
action
●Industrial Grade
Performance—Constant
hysteresis and linear
response characteristics
enhance setpoint accuracy
●Agency Approved—UL
Listed, CE pending
ECSTD Series Current Switch
Existing
Alarm
System
Audible
Alarm
New
Alarm
System
I
n
p
u
t
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V8-T7-20 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.5
Current and Voltage Sensors
CurrentWatch ECSTD Series
Standards and Certifications
●UL Listed
●cUL Listed
●CE (Pending)
●UL 508 Industrial Control
Equipment (USA and
Canada)
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
ECSTD Series CurrentWatch Current Switches
AC Output Switches (NO/NC 1A at 240 Vac)
AC/DC Output Switches (NO 0.15A at 240 Vac/dc, NC 0.2A at 135 Vac/dc) 1
Note
1 Preferred for PLC inputs.
(Pending)
Power Supply Aperture Size Output Type Setpoint Options Catalog Number
Solid-Core Housing
Self powered
(no external power needed)
0.75 in (19 mm) Normally open Adjustable setpoints: 1.5–12, 12–55 or 50–175A ECSTD401SC
Normally closed Adjustable setpoints: 1.5–12, 12–55 or 50–175A ECSTD402SC
Split-Core Housing
Self powered
(no external power needed)
0.85 in (21.6 mm) Normally open Adjustable setpoints: 2–12, 12– 55 or 50–200A ECSTD404SP
Normally closed Adjustable setpoints: 2–12, 12–55 or 50–200A ECSTD405SP
Power Supply Aperture Size Output Type Setpoint Options Catalog Number
Solid-Core Housing
Self powered
(no external power needed)
0.75 in (19 mm) Normally open Adjustable setpoints: 1.5–12, 12–55 or 50–175A ECSTD406SC
Normally closed Adjustable setpoints: 1.5–12, 12–55 or 50–175A ECSTD407SC
Split-Core Housing
Self powered
(no external power needed)
0.85 in (21.6 mm) Normally open Adjustable setpoints: 2–12, 12– 55 or 50–200A ECSTD408SP
Normally closed Adjustable setpoints: 2–12, 12–55 or 50–200A ECSTD409SP
Solid-Core Housing
Split-Core Housing
Solid-Core Housing
Split-Core Housing
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-21
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7.5
Current and Voltage Sensors
CurrentWatch ECSTD Series
Accessories
ECSTD Series CurrentWatch
Current Switches
Technical Data and Specifications
ECSTD Series CurrentWatch Current Switches
Overload Ratings
LED Indication/Output Status
Note
1Sensor pictured for reference and not included in kit.
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Description Specification
Power supply Self-powered—no power supply needed
Output Magnetically isolated solid-state switch
Output rating AC output models: NO/NC 1A at 240 Vac
AC/DC output models: NO 0.15A at 240 Vac/dc; NC 0.20A at 135 Vac/dc
Off-state leakage <10 μA
Response time Adjustable 0.2 to 15 sec.
Setpoint range Solid-core: 1.5–12, 12–55 or 50–175A
Split-core: 2–12, 12–55 or 50–200A (jumper selectable)
Hysteresis 5% (constant)
Isolation voltage 5000 Vac (tested)
Frequency range 50–100 Hz
Sensing aperture Solid-core models: 0.75 in (19 mm) dia.
Split-core models: 0.85 in (21.6 mm) sq.
Housing UL94 V0 flammability rated
Environmental Operating temperature: 5° to 122°F (–15° to 50°C)
Humidity: 0–95% RH, non-condensing
Maximum Amperes
Housing Range Continuous Six Seconds One Second
Solid-core 1.5–175A 175A 400A 1000A
Split-core 2–200A 200A 400A 1000A
Output
Monitored Amps NO NC Smart-LED (If Present)
None or minimum Open Closed Off
Below trip level Open Closed Slow (2 sec.)
Above trip level Closed Open Fast (0.5 sec.)
DIN Rail
Mounting Kit
V8-T7-22 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.5
Current and Voltage Sensors
CurrentWatch ECSTD Series
Wiring Diagram
ECSTD Series CurrentWatch Current Switches
Normally open (NO) models shown
Dimensions
Approximate Dimensions in Inches (mm)
Solid-Core Housing Split-Core Housing
AC or DC
Load
Output Signal
To Monitored Wire
AC or DC
Power
0.75
(19)
Dia.
0.967
(24.56)
2.43
(61.8)
2.18
(55.4)
1.51
(38.3) 3.53
(89.7)
LED
0.6
(15)
3.08
(78)
1.5
(39)
0.17
(4.5 Int. Dia.)
Typical of 2
0.125
(3.2)
0.931
(23.7)
1.18
(30)
3.04
(77.2)
3.53
(89.7)
2.40
(31)
0.45
(11.4)
0.19
(4.83)
Dia.
0.85
(21.6)
2.25
(57.2)
0.85
(21.6)
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-23
For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
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7.6
Current and Voltage Sensors
CurrentWatch ECSD Series
ECSD Series CurrentWatch Current Switches
Contents
Description Page
ECSD Series CurrentWatch Current Switches
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-24
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-24
Technical Data and Specifications . . . . . . . . . . V8-T7-24
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-25
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-25
ECSD Series CurrentWatch Current Switches
Product Description
The CurrentWatch ECSD
Series current operated
switches from Eaton’s
electrical sector provides the
same dependable indication
of status offered by the
CurrentWatch ECS Series,
but with the added benefit of
increased setpoint precision.
A choice of three jumper-
selectable input ranges allow
the ECSD Series to be
tailored to an application,
providing more precise
control through improved
setpoint resolution. Features
such as isolated solid-state or
mechanical relay outputs; 4-
20A, 10-50A, and 20-100A
input ranges are standard.
For typical applications of the
CurrentWatch ECSD Series,
see the listing on this page.
Application Description
Typical Applications
●Electronic Proof of
Flow—Current operated
switches eliminate the
need for multiple pipe or
duct penetrations and are
more reliable than
electromechanical
pressure or flow switches
●Welders—Instant
indication of equipment
status
●Large Drive Motors—
Provide monitoring for field
loss protection
●Power Supplies—Detect
and signal over-current
condition before
equipment damage
●UPS—Monitors battery
output
●Ancillary Equipment
Features
●Choice of Mechanical
Relay or Solid-state
Outputs
●SPDT (Form C) relay,
5.0A at 240 Vac or 30
Vdc
●Solid-state, NO, 0.15A at
240 Vac/dc
●Easily Adjustable
Setpoint—Speeds start-up
and reduces inventory
●Compact, One-Piece
Design—Easily fits in
crowded control panels
●Input Isolation—Safer
than shunt/relay
combinations
●Adaptive Hysteresis—
Hysteresis is five percent
of setpoint, allowing closer
control than fixed-
hysteresis switches
●Solid-Core Housings
●LED Indication—Provides
quick visual indication of
output contact status
●Built-In Mounting Feet—
Provide for a secure
installation
Standards and Certifications
●UL Listed
●cUL Listed
●CE
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
For the most current information
on this product, visit our Web site:
www.eaton.com
V8-T7-24 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.6
Current and Voltage Sensors
CurrentWatch ECSD Series
Product Selection
ECSD Series CurrentWatch Current Switches
Top Terminal Switches
Accessories
ECSD Series CurrentWatch
Current Switches
Technical Data and Specifications
ECSD Series CurrentWatch Current Switches
Note
1Sensor pictured for reference and not included with kit.
Power Supply Aperture Size Output Type, Voltage and Rating Setpoint and LED Configuration Catalog Number
Solid-Core Housings with Top Terminal
12 Vac/dc 0.74 in (19 mm) Solid-state, normally open, 0.15A at 240 Vac/dc Adjustable: 4–20, 10–50, 20–100A ECSD112SC
Mechanical relay, SPDT (Form C), 5.0A at 240 Vac, 30 Vdc ECSD212SC
24 Vac/dc 0.74 in (19 mm) Solid-state, normally open, 0.15A at 240 Vac/dc Adjustable: 4–20, 10–50, 20–100A ECSD124SC
Mechanical relay, SPDT (Form C), 5.0A at 240 Vac, 30 Vdc ECSD224SC
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Description Solid-State Output Models Mechanical Relay Models
Power supply 12 Vac/dc (operates from 10–18 Vac/dc)
24 Vac/dc (operates from 20–28 Vac/dc)
12 Vac/dc (operates from 10–18 Vac/dc)
24 Vac/dc (operates from 20–28 Vac/dc)
Output Isolated solid-state contact Mechanical relay (SPDT)
Output rating 0.15A at 240 Vac/dc
Normally open
5.0A at 240 Vac
5.0A at 30 Vdc
Off-state leakage <10 μA —
Response time 100 ms at 10% above setpoint
20 ms at 100% above setpoint
—
Setpoint range Adjustable: 4–20, 10–50, 20–100A —
Hysteresis 5% of setpoint —
Overload 1000% of range for 5 sec. —
Isolation voltage 3 kV —
Frequency range DC to 400 Hz —
Sensing aperture Solid-core, 0.74 in (19 mm) —
Housing UL94 V0 flammability rated —
Environmental Operating temperature: –40° to 140°F (–40° to 60°C)
Humidity: 0–95% RH, non-condensing
Operating temperature: –4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Solid-Core Housing
with Top Terminal
DIN Rail Mounting Kit
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-25
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7.6
Current and Voltage Sensors
CurrentWatch ECSD Series
Wiring Diagrams
Solid-State Output Models Mechanical Relay Models
Dimensions
Approximate Dimensions in Inches (mm)
Solid-Core Models
Setpoint
Power Supply
12 Vac/dc or 24 Vac/dc
Solid-State
Output
12
Setpoint
Power Supply
12 Vac/dc or 24 Vac/dc
Mechanical
Relay Output
12
3.88 in. (98.4 mm)
3.38 in. (86 mm)
2.50 in.
(63.5 mm)
0.40 in.
(10.2 mm)
0.75 in.
(19.1 mm)
ø
0.20 in.
(5 mm)
ø
V8-T7-26 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.7
Current and Voltage Sensors
CurrentWatch EAC Series
EAC Series CurrentWatch Current Sensors
Contents
Description Page
EAC Series CurrentWatch Current Sensors
Standards and Certifications . . . . . . . . . . . . . . V8-T7-27
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-27
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-28
Technical Data and Specifications . . . . . . . . . . V8-T7-28
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . V8-T7-29
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-29
EAC Series CurrentWatch Current Sensors
Product Description
The CurrentWatch EAC
Series from Eaton’s electrical
sector combines a current
transformer and signal
conditioner into a single
package. The EAC Series has
jumper-selected current input
ranges and industry standard
outputs: 4–20 mA, 0–5 Vdc or
0–10 Vdc. This
family of
sensors is designed for
application on “linear” or
sinu-
soidal AC loads.
Available in split-core or solid-
core housings.
For typical applications of the
Current
Watch EAC Series,
see listing on this page.
Application Description
Typical Applications
●Automation
Equipment—Analog
current reading for remote
monitoring and software
alarms
●Data Loggers—Self-
powered sensor helps
conserve data logger
batteries
●Panel Meters—Simple
connection displays power
consumption
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—
Preventative Maintenance of a Critical Lighting System
Features
●Highly Accurate—Factory
matched and calibrated
single-piece sensor is
more accurate than
traditional two-piece, field-
installed solutions
●Average Responding—
“Average Responding”
algorithm gives an RMS
output on pure sine waves,
perfect for constant speed
(linear) loads
●Jumper Selectable
Ranges—The ability to
change input ranges
reduces inventory and
eliminates zero and span
●Isolation—Output is
magnetically isolated from
the input for safety and
elimination of insertion loss
(voltage drop)
●UL, cUL and CE
Approved—Accepted
worldwide
Signal to
Lighting
Controller Current
Sensor Change
in
Current
Lamp Fall Time
Current is controlled
to extend lamp life
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-27
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7.7
Current and Voltage Sensors
CurrentWatch EAC Series
Standards and Certifications
1
●UL Listed
●cUL Listed
●CE Certified
●UL 508 Industrial Control
Equipment (USA and
Canada)
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
EAC Series CurrentWatch Current Sensors
To p Te r m i n a l C u rre n t S e n s o r s
Notes
1 EACP models not listed.
2 Not UL listed.
Power Supply Aperture Size Output Signal Current Range Catalog Number
Solid-Core Housings
Self-powered
(no external power needed)
0.74 in (19 mm) 0–5 Vdc 10, 20 or 50A EAC105SC
100, 150 or 200A EAC205SC
0–10 Vdc 10, 20 or 50A EAC110SC
100, 150 or 200A EAC210SC
24 Vdc loop-powered 4–20 mA 2 or 5A EAC0420SC
10, 20 or 50A EAC1420SC
100, 150 or 200A EAC2420SC
Split-Core Housings—Self-Powered and 24 Vdc
Self-powered
(no external power needed)
0.85 in (21.6 mm) 0–5 Vdc 10, 20 or 50A EAC105SP
100, 150 or 200A EAC205SP
0–10 Vdc 10, 20 or 50A EAC110SP
100, 150 or 200A EAC210SP
24 Vdc loop-powered 4–20 mA 2 or 5A EAC0420SP
10, 20 or 50A EAC1420SP
100, 150 or 200A EAC2420SP
Split-Core Housings—120 Vac and 24 Vac/dc
120 Vac 0.85 in (21.6 mm) 4–20 mA 2 or 5A EACP0420120SP 2
10, 20 or 50A EACP1420120SP 2
100, 150 or 200A EACP2420120SP 2
24 Vac/dc 4–20 mA 2 or 5A EACP042024USP 2
10, 20 or 50A EACP142024USP 2
100, 150 or 200A EACP242024USP 2
Solid-Core Housing
Split-Core Housing
Split-Core Housing
V8-T7-28 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.7
Current and Voltage Sensors
CurrentWatch EAC Series
Accessories
EAC Series CurrentWatch Current Sensors
Technical Data and Specifications
EAC Series CurrentWatch Current Sensors
Notes
1Sensor pictured for reference and not included in kit.
2Does not apply to EACP series.
3Additional custom ranges available from factory.
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Description Models with 0–5 Vdc Output
Specification
Models with 0–10 Vdc Output
Specification
Models with 4–20 mA Output
Specification
EACP Series Only
Specification
Power supply Self-powered—no power supply needed Self-powered—no power supply needed 12–40 Vdc loop-powered Models ending -0SP: 120 Vac
Models ending -USP: 24 Vac/dc
(40V maximum)
Output signal 0–5 Vdc 0–10 Vdc 4–20 mA 4–20 mA
Output limit 8.2 Vdc 15 Vdc 23 mA 22.4 mA
Accuracy 1.0% FS 1.0% FS 1.0% FS 1% FS
Response time 100 ms 100 ms 300 ms 100 ms
Frequency range 50–60 Hz 50–60 Hz 20–100 Hz 40–100 Hz
Loading 1M ohm minimum rated accuracy
100 kohms, add 1.3% error
1M ohm minimum rated accuracy
100 kohms, add 1.3% error
See power supply above 50 kohms minimum
500 kohms maximum
Isolation voltage UL listed to 1270 Vac (tested to 5kV) UL listed to 1270 Vac (tested to 5kV) UL listed to 1270 Vac (tested to 5kV) UL listed to 1270 Vac (tested to 5kV)
Input ranges Field selectable ranges from 0–200A 3Field selectable ranges from 0–200A 3Field selectable ranges from 0–200A 30–200A jumper selectable
Sensing aperture Solid-core: 0.74 in (19 mm) dia.
Split-core: 0.85 in (21.6 mm) sq.
Solid-core: 0.74 in (19 mm) dia.
Split-core: 0.85 in (21.6 mm) sq.
Solid-core: 0.74 in (19 mm) dia.
Split-core: 0.85 in (21.6 mm) sq.
0.85 in (21.6 mm)
Housing UL94 V0 flammability rated UL94 V0 flammability rated UL94 V0 flammability rated UL94 V0 flammability rated
Environmental Operating temperature:
–4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Operating temperature:
–4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Operating temperature:
–4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Operating temperature:
–4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
DIN Rail
Mounting Kit
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-29
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7.7
Current and Voltage Sensors
CurrentWatch EAC Series
Wiring Diagrams
EACP Models All Other Models 1
Dimensions
Approximate Dimensions in Inches (mm)
Solid-Core Housing
All Other Models
EACP Series
Note
1Pressure plate screw terminals.
12–22 AWG solid or stranded.
Field adjustable setpoint.
(–) Load
(+) (Controller, Meter...)
Power
Power Supply
(24 Vac/dc or 120 Vac)
1 2 3 (–) 4 (+)
Output
2(+)1(–)
(–) (+)
2(+)1(–)
Output
Output
24 Vdc Power Load (Controller, Meter, etc.)
(+)
(–)
4–20 mA Option
0–5/10 Vdc Option
Range Jumper
Range Jumper
100 kohms Acceptable
1M ohm Recommended
3.50
(88.9)
3.03
(77.0)
0.93
(23.6)
0.19 Dia.
(4.8) 2.40
(61.0)
2.18
(55.4)
0.74 Dia.
(19)
0.85 (21.6)
0.85 (21.6)
3.53
(89.7)
2.40
(61)
3.04
(77.2) 0.19 Dia.
(4.8)
2.25
(57.2)
1.19
(30.2)
3.04
(77.2)
1.18
(30)
3.53
(89.7)
2.40
(61)
0.85
(21.6)
0.45
(11.4)
2.25
(57.2)
0.85
(21.7)
0.19
(4.8)
Dia.
V8-T7-30 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.8
Current and Voltage Sensors
CurrentWatch EACR Series
EACR Series CurrentWatch Current Sensors
Contents
Description Page
EACR Series CurrentWatch Current Sensors
Standards and Certifications . . . . . . . . . . . . . . V8-T7-31
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-31
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-31
Technical Data and Specifications . . . . . . . . . . V8-T7-32
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-32
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-32
EACR Series CurrentWatch Current Sensors
Product Description
The CurrentWatch EACR
Series current sensor family
from Eaton’s electrical sector
combines a current sensor
and a “True RMS” signal
conditioner into a single
package. The EACR Series
provides True RMS output on
distorted waveforms found
on VFD or SCR outputs, and
on linear loads in “noisy”
power environments.
Available in solid- or split-core
housings.
For typical applications of the
Current
Watch EACR Series,
see listing on this page.
Application Description
Typical Applications
●VFD Controlled Loads—
Monitoring VFD output
indicates how the motor
and attached load are
operating
●SCR Controlled Loads—
Accurate measurement of
phase angle fired or burst
fired (time proportioned)
SCRs, with faster current
measurement than
temperature sensors
●Switching Power
Supplies and Electronic
Ballasts—True RMS
sensing is the most
accurate way to measure
power supply or ballast
input power
Why “True RMS”?
The current waveform of a
typical linear load is a pure
sine wave. In VFD and SCR
applications, however, output
waveforms are rough
approximations of a sine
wave. There are numerous
spikes and dips in each cycle.
The CurrentWatch EACR
Series current sensors use a
mathematical algorithm called
“True RMS” which
integrates the actual
waveform over time. The
output is the amperage
component of the true power
(heating value) of the AC
current waveform. True RMS
is the only way to accurately
measure distorted AC
waveforms. Select the EACR
Series sensors for nonlinear
loads in “noisy” power
environments.
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—
Current Sensing for Non-Linear AC Loads
Features
●True RMS Output—True
RMS technology is
accurate on distorted
waveforms like VFD or
SCR outputs
●Jumper-Selectable
Ranges—Reduces
inventory and eliminates
zero and span
●Isolation—Output is
magnetically isolated from
the input for safety and
elimination of insertion loss
(voltage drop)
●UL, cUL and CE
Approved—Accepted
worldwide
137.2A
Controller
Two-Wire Installation
Is Fast and Easy
Field
Selectable
Ranges
True RMS Output
even on VFDs or SCRs
L
I
N
EVFD
54.7Hz
Motor
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-31
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7.8
Current and Voltage Sensors
CurrentWatch EACR Series
Standards and Certifications
●UL Listed
●cUL Listed
●CE Certified
●UL 508 Industrial Control
Equipment (USA and
Canada)
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
EACR Series CurrentWatch Current Sensors
To p Te r m i n a l C u rre n t S e n s o r s
Accessories
EACR Series CurrentWatch Current Sensors
Note
1 Sensor pictured for reference and not included in kit.
Power Supply Aperture Size Output Signal Current Range Catalog Number
Solid-Core Housing
24 Vdc loop-powered 0.74 in (19 mm) 4–20 mA 2 or 5A EACR0420SC
10, 20 or 50A EACR1420SC
100, 150 or 200A EACR2420SC
Split-Core Housing
24 Vdc loop-powered 0.85 in (21.6 mm) 4–20 mA 2 or 5A EACR0420SP
10, 20 or 50A EACR1420SP
100, 150 or 200A EACR2420SP
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Solid-Core Housing
Split-Core Housing
DIN Rail
Mounting Kit
V8-T7-32 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.8
Current and Voltage Sensors
CurrentWatch EACR Series
Technical Data and Specifications
EACR Series CurrentWatch Current Sensors
Wiring Diagram
EACR Series CurrentWatch Current Sensors 2
Dimensions
Approximate Dimensions in Inches (mm)
Solid-Core Housing
Notes
1Additional custom ranges available from factory.
2Deadfront captive screw terminals (split-core housing models only).
12–22 AWG solid or stranded.
Observe polarity.
Split-Core Housing
Description Specification
Power supply 24 Vdc loop-powered, 40 Vdc maximum
Output signal 4–20 mA
Output limit 23 mA
Accuracy 1.0% FS
Response time 600 ms (to 90% step change)
Frequency range 10–400 Hz
Isolation voltage UL listed to 1270 Vac (Tested to 5 kV)
Input ranges Field selectable ranges from 0–200A 1
Sensing aperture Solid-core: 0.74 in (19 mm) dia.
Split-core: 0.85 in (21.6 mm) sq.
Housing UL94 V0 flammability rated
Environmental Operating temperature: –4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Low Mid
Range Switch Output
1(−) 2(+)
High
24 Vdc Power Load (Controller, Meter, etc.)
(−)
(−)
(+) (+)
3.50
(88.9)
3.03
(77.0)
0.93
(23.6)
0.19 Dia.
(4.8) 2.40
(61.0)
2.18
(55.4)
0.74 Dia.
(19)
1.18
(30)
3.04
(77.2)
3.53
(89.7)
2.40
(31)
0.45
(11.4)
0.19
(4.83)
Dia.
0.85
(21.6)
2.25
(57.2)
0.85
(21.6)
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-33
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.9
Current and Voltage Sensors
CurrentWatch EDC Series
EDC Series CurrentWatch Current Sensors
Contents
Description Page
EDC Series CurrentWatch Current Sensors
Standards and Certifications . . . . . . . . . . . . . . V8-T7-34
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-34
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-35
Technical Data and Specifications . . . . . . . . . . V8-T7-35
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-36
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-36
EDC Series CurrentWatch Current Sensors
Product Description
The CurrentWatch EDC
Series from Eaton’s electrical
sector combines a hall effect
sensor and signal conditioner
into a single package for use
in DC current applications up
to 300A. The EDC Series has
jumper-selected current input
ranges and industry standard
outputs: 4–20 mA, 0–5 Vdc or
0–10 Vdc. Available in split-
core models for quick and
easy installation.
For typical applications of the
CurrentWatch EDC Series,
see listing on this page.
Application Description
Typical Applications
●Battery Banks—Monitor
load current, monitor
charging current and verify
operation
●Transportation—
Measures traction power
or auxiliary loads
●Electric Heating
Elements—Monitor
heater loads with a faster
response time than
temperature sensors
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—Battery Charging System
Features
●Jumper-Selectable
Ranges—Reduce
inventory and eliminate
zero or span pots
●Isolation—Output is
magnetically isolated from
the input for safety, also
eliminating insertion loss
(voltage drop)
●Internal Power
Regulation—Cuts
installation costs and
works well, even with
unregulated power
●Split Core Design and
Built-In Mounting
Brackets—Make
installation quick and easy
●UL and CE Approved
– Amps
100%
50%
0%
Unipolar
(Magnitude Only)
0 + Amps
Load
Charging
System
V8-T7-34 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.9
Current and Voltage Sensors
CurrentWatch EDC Series
Standards and Certifications
●UL Listed
●cUL Listed
●CE Certified
●UL 508 Industrial Control
Equipment (USA and
Canada)
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
EDC Series CurrentWatch Current Sensors
To p Te r m i n a l C u rre n t S e n s o r s
Power Supply Aperture Size Output Signal Current Range Catalog Number
Split-Core Housing—Uni-Polar Output, see Output Graph on Page V8-T7-35
24 Vac/dc 0.85 in (21.6 mm) 0–5 Vdc 50, 75 or 100A EDC205SP
100, 150 or 200A EDC305SP
150, 225 or 300A EDC405SP
0–10 Vdc 50, 75 or 100A EDC210SP
100, 150 or 200A EDC310SP
150, 225 or 300A EDC410SP
4–20 mA 50, 75 or 100A EDC2420SP
100, 150 or 200A EDC3420SP
150, 225 or 300A EDC4420SP
Split-Core Housing—Bidirectional Output, see Output Graph on Page V8-T7-35
24 Vac/dc 0.85 in (21.6 mm) –10 to +10 Vdc 0–100A EDCB100SP
0–200A EDCB200SP
0–300A EDCB300SP
0–400A EDCB400SP
Solid-Core Housing—Single-Polarity Output, see Output Graph on Page V8-T7-35
24 Vac/dc 0.75 in (19 mm) 4–20 mA 5, 10 or 20A EDC1420SC
Split-Core Housing
Split-Core Housing
Solid-Core Housing
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-35
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7.9
Current and Voltage Sensors
CurrentWatch EDC Series
Accessories
CurrentWatch EDC Series
Technical Data and Specifications
EDC Series CurrentWatch Current Sensors
Output Graphs
Uni-Poler Output for
Split-Core
Bidirectional Output for
Split-Core
Standard Analog Output for
Solid-Core
Note
1Sensor pictured for reference and not included in kit.
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Description
Models with 0–5 Vdc Output
Specification
Models with 0–10 Vdc Output
Specification
Models with 4–20 mA Output
Specification
Power supply 24 Vac/dc (22–38 Vac/dc) 2 VA maximum 24 Vac/dc (22–38 Vac/dc) 2 VA maximum 24 Vac/dc (22–38 Vac/dc) 2 VA maximum
Output signal 0–5 Vdc 0–10 Vdc 4–20 mA
Output limit 5.75 Vdc 11.5 Vdc 23 mA
Accuracy Solid-core models: 1% FS
Split-core models: 2% FS
300A models: 1.5% FS
Solid-core models: 1% FS
Split-core models: 2% FS
300A models: 1.5% FS
Solid-core models: 1% FS
Split-core models: 2% FS
300A models: 1.5% FS
Response time Solid-core models: 20 ms (to 90% of step change)
Split-core models: 100 ms (to 90% of step change)
Solid-core models: 20 ms (to 90% of step change)
Split-core models: 100 ms (to 90% of step change)
Solid-core models: 20 ms (to 90% of step change)
Split-core models: 100 ms (to 90% of step change)
Frequency range DC DC DC
Loading 25 kohms minimum 50 kohms minimum 650 ohms maximum
Isolation voltage 3 kV (monitored line to output) 3 kV (monitored line to output) 3 kV (monitored line to output)
Linearity 0.75% FS 0.75% FS 0.75% FS
Current ranges Field selectable ranges from 0–300A Field selectable ranges from 0–300A Field selectable ranges from 0–300A
Sensing aperture Solid-core housings: 0.75 in (19 mm) dia.
Split-core housings: 0.85 in (21.6 mm) sq.
Solid-core housings: 0.75 in (19 mm) dia.
Split-core housings: 0.85 in (21.6 mm) sq.
Solid-core housings: 0.75 in (19 mm) dia.
Split-core housings: 0.85 in (21.6 mm) sq.
Environmental Operating temperature: –4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Operating temperature: –4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Operating temperature: –4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
DIN Rail
Mounting Kit
– Amps
100%
50%
0%
0 + Amps
– Max.
Amps
+10 Vdc
0
–10 Vdc
0 + Max.
Amps
– Amps
100%
50%
0%
0 + Amps
V8-T7-36 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.9
Current and Voltage Sensors
CurrentWatch EDC Series
Wiring Diagram
EDC Series CurrentWatch Current Sensors
Dimensions
Approximate Dimensions in Inches (mm)
Split-Core Housing Solid-Core Housing
Power Output
1(–) 2(+) 3(–) 4(+)
Range
Jumper
24 Vac/dc Output is powered
by EDC Sensor.
3.04
(77.2)
1.18
(30)
3.53
(89.7)
2.40
(61)
0.85
(21.6)
0.45
(11.4)
2.25
(57.2)
0.85
(21.7)
0.19
(4.8)
Dia.
0.75 Dia.
(19.1)
1.50
(38.1)
2.90
(73.7)
3.38
(85.9)
0.80
(20.3)
0.45
(11.4)
3.87
(98.3)
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-37
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.10
Current and Voltage Sensors
CurrentWatch EGF Series
EGF Series CurrentWatch Current Sensors
Contents
Description Page
EGF Series CurrentWatch Current Sensors
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-38
Standards and Certifications . . . . . . . . . . . . . . V8-T7-38
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-38
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-39
Technical Data and Specifications . . . . . . . . . . V8-T7-40
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-41
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-41
EGF Series CurrentWatch Current Sensors
Product Description
The CurrentWatch EGF
Series from Eaton’s electrical
sector is a family of ground
fault (earth leakage) sensors.
Ground fault sensors help
protect people, products and
processes from damage by
ground fault conditions by
monitoring all current-carrying
conductors in grounded single-
and three-phase delta or wye
systems.
The EGF Series with solid-
state outputs offers the
benefit of reliable, long-
lasting solid-state switches.
Solid-state design provides
unlimited switch operating
life, superior resistance to
shock and vibration, zero off-
state leakage, high switch
speeds and high input-output
isolation.
The EGF Series with
mechanical relay outputs
is available in solid-core
housings with a choice of
NO or NC SPST latching relays
and a SPDT Form C relay with
auto-reset.
Application Description
Typical Applications
●Personnel Protection
(Typically 5 mA)—Detects
sensitive ground fault
conditions, which could
cause injury to people, and
functions as a sensor and
alarm trigger when applied
as an input to an overall
ground fault protection
system
●Equipment Protection
(Typically 10 or 30 mA)—
For applications where
personnel protection is not
the primary concern,
higher setpoint capability
helps eliminate nuisance
tripping while still providing
adequate ground fault
detection to protect
machine electronics
●Regulatory—Meets
requirements as stipulated
by governmental and
industrial regulatory groups
for ground fault sensing
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—Insulation Breakdown Monitoring
”Zero Sequence” Operating Principle
In three-phase delta and wye
systems, under normal
conditions, current in the
“hot” leg of a two-wire load
is equal in magnitude but
opposite in sign to the current
in a neutral leg. As a result,
the electromagnetic fields
surrounding these two
conductors cancel, producing
a “zero sum current.” As
soon as current leaks to
ground (fault condition), the
two currents become
imbalanced and a net
magnetic field results. The
CurrentWatch EGF Series
sensors monitor this field and
trip the contacts when the
leakage rises above the
setpoint.
Ground Fault Sensor
Circuit Interruption Device
Shunt Trip Breaker
For example, Contactor
Leakage
to Ground
V8-T7-38 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.10
Current and Voltage Sensors
CurrentWatch EGF Series
Features
●Broad Range of Options
to Meet Application
Needs—NO or NC, solid-
state
or mechanical relays,
normally energized or
normally de-energized
contacts
●Setpoint Options
Maximize Ease-of-Use
and Application
Flexibility—Field
selectable 5, 10 or 30 mA
setpoints on the EGF “tri-
set” models make user
adjustments fast, sure and
convenient
●Compatible with
Standard Equipment—
Application on single- and
three-phases systems,
ideal for use with shunt trip
breakers, and magnetically
isolated from monitored
circuit and control power
●Agency Approved—UL
and CE Certified, accepted
worldwide
Standards and Certifications
●UL 1053, Class 1
Recognized
●CE
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
EGF Series CurrentWatch Current Sensors
Solid-State Output Sensors
Power Supply Setpoint
AC Solid-State
Output
DC Solid-State
Output Contacts Catalog Number
Solid-Core Housings
120 Vac Fixed, 50 mA Solid-state, NO, 1A at 240 Vac — Normally energized EGF1NOACNE050
Normally de-energized EGF1NOACDE050
Solid-state, NC, 1A at 240 Vac — Normally energized EGF1NCACNE050
Normally de-energized EGF1NCACDE050
— Solid-state, NO, 0.15A at 30 Vdc Normally energized EGF1NODCNE050
Normally de-energized EGF1NODCDE050
— Solid-state, NC, 0.15A at 30 Vdc Normally energized EGF1NCDCNE050
Normally de-energized EGF1NCDCDE050
120 Vac Fixed, 100 mA Solid-state, NO, 1A at 240 Vac — Normally energized EGF1NOACNE100
Normally de-energized EGF1NOACDE100
Solid-state, NC, 1A at 240 Vac — Normally energized EGF1NCACNE100
Normally de-energized EGF1NCACDE100
— Solid-state, NO, 0.15A at 30 Vdc Normally energized EGF1NODCNE100
Normally de-energized EGF1NODCDE100
— Solid-state, NC, 0.15A at 30 Vdc Normally energized EGF1NCDCNE100
Normally de-energized EGF1NCDCDE100
120 Vac Tri-set adjustable,
5, 10 or 30 mA
Solid-state, NO, 1A at 240 Vac — Normally energized EGF3NOACNET3
Normally de-energized EGF3NOACDET3
Solid-state, NC, 1A at 240 Vac — Normally energized EGF3NCACNET3
Normally de-energized EGF3NCACDET3
— Solid-state, NO, 0.15A at 30 Vdc Normally energized EGF3NODCNET3
Normally de-energized EGF3NODCDET3
— Solid-state, NC, 0.15A at 30 Vdc Normally energized EGF3NCDCNET3
Normally de-energized EGF3NCDCDET3
Solid-Core Housing
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-39
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7.10
Current and Voltage Sensors
CurrentWatch EGF Series
Mechanical Relay Output Sensors
Accessories
EGF Series CurrentWatch Current Sensors
Note
1 Sensor pictured for reference and not included in kit.
Power Supply Setpoint Mechanical Relay Output Contacts Catalog Number
Solid-Core Housings
120 Vac Fixed, 50 mA Mechanical relay, NO SPST relay, Form A (1A at 120 Vac) Latching relay EGF1NOLA050
Mechanical relay, NC SPST relay, Form B (1A at 120 Vac) Latching relay EGF1NCLA050
Mechanical relay, SPDT Form C, auto-reset (1A at 120 Vac) Normally energized EGF1SPDTNE050
Normally de-energized EGF1SPDTDE050
Fixed, 100 mA Mechanical relay, NO SPST relay, Form A (1A at 120 Vac) Latching relay EGF1NOLA100
Mechanical relay, NC SPST relay, Form B (1A at 120 Vac) Latching relay EGF1NCLA100
Mechanical relay, SPDT Form C, auto-reset (1A at 120 Vac) Normally energized EGF1SPDTNE100
Normally de-energized EGF1SPDTDE100
Tri-set adjustable,
5, 10 or 30 mA
Mechanical relay, NO SPST relay, Form A (1A at 120 Vac) Latching relay EGF1NOLAT3
Mechanical relay, NC SPST relay, Form B (1A at 120 Vac) Latching relay EGF1NCLAT3
Mechanical relay, SPDT Form C, auto-reset (1A at 120 Vac) Normally energized EGF1SPDTNET3
Normally de-energized EGF1SPDTDET3
24 Vac/dc Fixed, 50 mA Mechanical relay, NO SPST relay, Form A (2A at 30 Vdc) Latching relay EGF2NOLA050
Mechanical relay, NC SPST relay, Form B (2A at 30 Vdc) Latching relay EGF2NCLA050
Mechanical relay, SPDT Form C, auto-reset (2A at 30 Vdc) Normally energized EGF2SPDTNE050
Normally de-energized EGF2SPDTDE050
Fixed, 100 mA Mechanical relay, NO SPST relay, Form A (2A at 30 Vdc) Latching relay EGF2NOLA100
Mechanical relay, NC SPST relay, Form B (2A at 30 Vdc) Latching relay EGF2NCLA100
Mechanical relay, SPDT Form C, auto-reset (2A at 30 Vdc) Normally energized EGF2SPDTNE100
Normally de-energized EGF2SPDTDE100
Tri-set adjustable,
5, 10 or 30 mA
Mechanical relay, NO SPST relay, Form A (2A at 30 Vdc) Latching relay EGF2NOLAT3
Mechanical relay, NC SPST relay, Form B (2A at 30 Vdc) Latching relay EGF2NCLAT3
Mechanical relay, SPDT Form C, auto-reset (2A at 30 Vdc) Normally energized EGF2SPDTNET3
Normally de-energized EGF2SPDTDET3
Description Catalog Number
DIN rail mounting kit 1EDINKIT
Solid-Core Housing
DIN Rail
Mounting Kit
V8-T7-40 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.10
Current and Voltage Sensors
CurrentWatch EGF Series
Technical Data and Specifications
EGF Series CurrentWatch Current Sensors
Output Tables
Protection from faults and control power loss.
Normally Energized Models
Normally De-Energized Models
Latching (Mechanical Relay Output) Models
Latching models power up
initially in the rest (normal)
mode. If there is a fault
condition or the test button is
pushed, the output contacts
will change state and latch.
The output will remain
latched regardless of whether
the fault is cleared or control
power is removed. To reset
the output, apply a
momentary contact across
“reset” terminals.
Description
Solid-State Output Models
Specification
Mechanical Relay Output Models
Specification
Power supply 120 Vac (55–110% of nominal voltage)
24 Vac/dc (± 20%)
120 Vac (55–110% of nominal voltage)
24 Vac/dc (± 20%)
Output contact type Isolated dry contact Mechanical relay
Output rating (switching
current and switching
voltage)
AC output switching models: 1A at 240 Vac
DC output switching models: 0.15A at 30 Vdc
Auto reset models, SPDT relay:
1A at 120 Vac; 2A at 30 Vdc
Latching models, SPST relay:
1A at 120 Vac; 2A at 30 Vdc
Off-state leakage NO models: <10 μA
NC models: <2.5 mA
None
Response time 200 ms at 5% above trip point
60 ms at 50% above trip point
15 ms at 500% above trip point
200 ms at 5% above trip point
60 ms at 50% above trip point
15 ms at 500% above trip point
Frequency range 50–400 Hz (monitored circuit) 50–400 Hz (monitored circuit)
Loading 2 VA maximum 2 VA maximum
Isolation voltage 5000 Vac (tested) 5000 Vac (tested)
Sensing aperture 0.74 in (19 mm) diameter 0.74 in (19 mm) diameter
LED indicator Green LED for power ON status;
red LED for contact status
Green LED for power ON status;
red LED for contact status
Housing UL94 V0 flammability rated UL94 V0 flammability rated
Environmental Operating temperature: –4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Operating temperature: –4° to 122°F (–20° to 50°C)
Humidity: 0–95% RH, non-condensing
Control Power Applied
No Power No Fault Fault
Normally open models Open Closed Open
Normally closed models Closed Open Closed
Control Power Applied
No Power No Fault Fault
Normally open models Open Open Closed
Normally closed models Closed Closed Open
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-41
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7.10
Current and Voltage Sensors
CurrentWatch EGF Series
Wiring Diagrams
Solid-State Output Models
All Models
Mechanical Relay Output Models
Latching Models
Auto Reset Models
Dimensions
Approximate Dimensions in Inches (mm)
Solid-State Output Models Mechanical Relay Models
Test
GR
Power Output
Power Output
Power
Interupt
Power
Interupt
Power
Interupt
Power
Interupt
HOT
NEUT
1Ø Power
1Ø Load
Power Output
ØA
ØB
ØC
ØN
3Ø Wye Power
3Ø Load
Power Output
ØA
ØB
3Ø Power
1Ø Load
Power Output
ØA
ØB
ØC
3Ø Delta Power
3Ø Load
EGF Series
EGF Series
EGF Series
EGF Series
Jumper Location
of Tri-set Models
External Reset
Switch
GR
Power Output
123456
StatusPower
Jumper Location
of Tri-set Models
GR
123456
Power Status
Power Output
0.20
(5.1)
Dia.
0.75
(19.1)
Dia.
3.38
(86)
2.50
(63)
2.90
(73.7)
TEST
1.50
(38)
0.44
(11.2)
2.25
(57.2) Latching
(7 Terminals)
1.88
(47.6)
2.50
(63.5)
3.88
(98.6)
2.90
(73.7)
3.38
(85.9)
0.75 Dia
(19.1)
0.20 Dia
(5.1)
TEST
Auto Reset
(6 Terminals)
V8-T7-42 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
call 1-800-426-9184.
7.11
Current and Voltage Sensors
CurrentWatch EGFL Series
EGFL Series CurrentWatch Current Sensors
Contents
Description Page
EGFL Series CurrentWatch Current Sensors
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-43
Standards and Certifications . . . . . . . . . . . . . . V8-T7-38
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V8-T7-43
Technical Data and Specifications . . . . . . . . . . V8-T7-43
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . V8-T7-44
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T7-44
EGFL Series CurrentWatch Current Sensors
Product Description
The CurrentWatch EGFL
Series from Eaton’s electrical
sector is a family of ground
fault (earth leakage) sensors.
Ground fault sensors help
protect people, products and
processes from damage by
ground fault conditions by
monitoring all current-carrying
conductors in grounded
single- and three-phase delta
or wye systems. For more
information, see “Zero
Sequence” Operating
Principle on this page. The
EGFL Series is available with
either solid-state or
mechanical relay outputs.
The EGFL Series with
mechanical relays are
available in solid-core
housings with a choice of NO
or NC SPST latching relays
and a SPDT Form C relay with
auto-reset. All mechanical
models can be ordered with a
fixed setpoint or with a “tri-
set” option, which provides
three factory-set, field
adjustable setpoints.
Application Description
Typical Applications
●Personnel Protection
(Typically 5 mA)—Detects
sensitive ground fault
conditions, which could
cause injury to people, and
functions as a sensor and
alarm trigger when part of
an overall ground fault
protection system
●Equipment Protection
(Typically 10 or 30 mA)—
For applications where
personnel protection is not
the primary concern,
higher setpoint capability
helps eliminate nuisance
tripping while still providing
adequate ground fault
detection to protect
machine electronics
●Regulatory—Meets
requirements as stipulated
by governmental and
industrial regulatory groups
for ground fault sensing
For the most current information
on this product, visit our Web site:
www.eaton.com
Example Application—Insulation Breakdown Monitoring
”Zero Sequence” Operating Principle
In three-phase delta and wye
systems, under normal
conditions, current in the
“hot” leg of a two-wire load
is equal in magnitude but
opposite in sign to the current
in a neutral leg. As a result,
the electromagnetic fields
surrounding these two
conductors cancel, producing
a “zero sum current.” As
soon as current leaks to
ground (fault condition), the
two currents become
imbalanced and a net
magnetic field results. The
CurrentWatch EGFL Series
sensors monitor this field and
trip alarm contacts when the
leakage rises above the
setpoint.
Ground Fault Sensor
Circuit Interruption Device
Shunt Trip Breaker
For example, Contactor
Leakage
to Ground
Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com V8-T7-43
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7.11
Current and Voltage Sensors
CurrentWatch EGFL Series
Features
●Broad Range of Options
to Meet Application
Needs—Mechanical
relays, normally energized
or normally de-energized
contacts
●Setpoint Options
Maximize Ease-of-Use
and Application
Flexibility—Field
selectable 5, 10 or 30 mA
setpoints on the EGFL “tri-
set” models make user
adjustments fast, sure and
convenient
●Compatible with
Standard Equipment—
Application on single- and
three-phase systems, ideal
for use with shunt trip
breakers, and magnetically
isolated from monitored
circuit and control power
●Agency Approved—UL
and CE Certified, accepted
worldwide
Standards and Certifications
●UL Approved
●UL 1053, Class 1
Recognized
●CE
●cULus
DANGER
THIS SENSOR IS NOT A
SAFETY DEVICE AND IS NOT
INTENDED TO BE USED AS A
SAFETY DEVICE. This sensor
is designed only to detect
and read certain data in an
electronic manner and
perform no use apart from
that, specifically no safety-
related use. This sensor
product does not include
self-checking redundant
circuitry, and the failure of
this sensor product could
cause either an energized
or de-energized output
condition, which could result
in death, serious bodily
injury, or property damage.
Product Selection
EGFL Series CurrentWatch Current Sensors
Mechanical Relay Sensors
Technical Data and Specifications
EGFL Series CurrentWatch Current Sensors
Power Supply Setpoint Output Type Contacts Catalog Number
Solid-Core Housings
120 Vac Tri-set adjustable, 5, 10 or 30 mA Mechanical relay, NO SPST relay, Form A Latching relay EGFL1NOLAT3
Mechanical relay, NC SPST relay, Form B Latching relay EGFL1NCLAT3
Mechanical relay, SPDT Form C, auto-reset Normally energized EGFL1SPDTNET3
Normally de-energized EGFL1SPDTDET3
24 Vac/dc Tri-set adjustable, 5, 10 or 30 mA Mechanical relay, NO SPST relay, Form A Latching relay EGFL2NOLAT3
Mechanical relay, NC SPST relay, Form B Latching relay EGFL2NCLAT3
Mechanical relay, SPDT Form C, auto-reset Normally energized EGFL2SPDTNET3
Normally de-energized EGFL2SPDTDET3
Description Specifications
Power supply 120 Vac (55–110% of nominal voltage)
24 Vac/dc (± 20%)
Output signal Mechanical relay
Output rating Auto reset models, SPDT relay: 1A at 125 Vac; 2A at 30 Vdc
Latching models, SPST relay: 1A at 125 Vac; 2A at 30 Vdc
OFF-state leakage None
Response time 200 ms at 5% above trip point
60 ms at 50% above trip point
15 ms at 500% above trip point
Frequency range 50–400 Hz (monitored circuit)
Loading 2VA max.
Isolation voltage 5000 Vac (tested)
Sensing aperture 1.83 in (46.5 mm) diameter
LED indicator Green LED for power ON status
Red LED for contact status
Housing UL94 V0 flammability rated
Environmental Operating temperature: –4° to +122°F (–20° to +50°C)
Humidity: 0–95% RH, non-condensing
Solid-Core Housing
V8-T7-44 Volume 8—Sensing Solutions CA08100010E—August 2012 www.eaton.com
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7.11
Current and Voltage Sensors
CurrentWatch EGFL Series
Output Tables
Protection from faults and control power loss.
Normally Energized Models
Normally De-Energized Models
Latching Models
Latching models power up initially in the rest (normal) mode. If
there is a fault condition or the test button is pushed, the output
contacts will change state and latch. The output will remain
latched regardless of whether the fault is cleared or control
power is removed. To reset the output, apply a momentary
contact across “reset” terminals.
Wiring Diagrams
General Wiring Diagram for Ground Fault Sensors Latching Models
Auto Reset Models
Dimensions
Approximate Dimensions in Inches (mm)
Mechanical Relay Models
Control Power Applied
No Power No Fault Fault
Normally open models Open Closed Open
Normally closed models Closed Open Closed
Control Power Applied
No Power No Fault Fault
Normally open models Open Open Closed
Normally closed models Closed Closed Open
Power Output
Power
Interupt
Power
Interupt
Power
Interupt
Power
Interupt
HOT
NEUT
1Ø Power
1Ø Load
Power Output
ØA
ØB
ØC
ØN
3Ø Wye Power
3Ø Load
Power Output
ØA
ØB
3Ø Power
1Ø Load
Power Output
ØA
ØB
ØC
3Ø Delta Power
3Ø Load
EGF Series
EGF Series
EGF Series
EGF Series
123456
Power Output
External Reset Switch
G R
Power Status
TEST
Jumper Location for Tri-Set Models
12345
Power Output
G R
Power Status
TEST
Jumper Location for Tri-Set Models
1.42
(36.1)
3.25 (82.6)
1.50 (38.1)
4.20
(106.7)
2.99 (75.9)
1.83 (46.5)