© 2016 Littelfuse Protection Relays & Controls
Protection Relays
Current Monitoring Relays and Transducers
www.littelfuse.com/tcs
Rev: 1-A-062116
TCS SERIES
Description
The TCS Series is a low cost method of go/no go current
detection. It includes a solid-state output to sink or source
current when connected directly to a standard PLC digital input
module. Its normally open or normally closed output can also be
used to control relays, lamps, valves, and small heaters rated up
to 1A steady, 10A inrush. The TCS is self-powered (no external
power required to operate the unit) and available with an
adjustable actuation range of 2 - 20A or factory fixed actuation
points from 2 - 45A.
Operation
Normally Open: When a current equal to or greater than the
actuate current is passed through the toroidal sensor, the output
closes. When the current is reduced to 95% of the actuate
current or less, the output opens.
Normally Closed: When the current through the toroid is equal
to or greater than the actuate current, the output opens. When
the current is reduced below 95% of the actuate current, the
output closes. To increase sensitivity, multiple turns may be
made through the TCS’s toroidal sensor. The trip point range is
divided by the number of turns through the toroidal sensor to
create a new range. When using an external CT, select a 2VA,
0-20A output CT rated for the current to be monitored. Select
TCS adjustment range 0. Pass one secondary wire lead through
the TCS’ toroid and connect the secondary leads together.
Features & Benefits
FEATURES BENEFITS
Self powered No control voltage is required to operate the unit
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Can connect directly
to PLC
Solid state output to sink or source current can
be connected directly to a standard PLC digital
input module
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Complete isolation
between sensed current
and control circuit
Allows you to monitor a load in a separate
lectrical system
Current Sensor
Wiring Diagram
Ordering Information
MODEL OUTPUT VOLTAGE ACTUATE CURRENT OUTPUT FORM MODEL OUTPUT VOLTAGE ACTUATE CURRENT OUTPUT FORM
TCSG2A 3 to 50VDC Fixed, 2A Normally open TCSH2B 24 to 240VAC Fixed, 2A Normally closed
TCSGAA 3 to 50VDC 2-20A adjustable Normally open TCSH5B 24 to 240VAC Fixed, 5A Normally closed
TCSGAB 3 to 50VDC 2-20A adjustable Normally closed TCSHAA 24 to 240VAC 2-20A adjustable Normally open
TCSH2A 24 to 240VAC Fixed, 2A Normally open TCSHAB 24 to 240VAC 2-20A adjustable Normally closed
If you don’t find the part you need, call us for a custom product 800-843-8848
Monitored AC conductor
must be insulated.
L1
N/L2
L1
N/L2
L1
N/L2
L = Load
V = Voltage
PS = Power Supply
PLC = PLC Digital Input Module
POSITIVE SWITCHING
SINKING
SOURCING
NEGATIVE SWITCHING
L1
N/L2
© 2016 Littelfuse Protection Relays & Controls
Protection Relays
Current Monitoring Relays and Transducers
www.littelfuse.com/tcs
Rev: 1-A-062116
TCS SERIES
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Function Diagram
Specifications
Sensor
Type Toroid, through hole wiring, alternating current,
monitored wire must be properly insulated
Current to Actuate Adjustable: - 2 - 20A, guaranteed range
Fixed: - 2 - 45A, +0/-20%
Reset Current ≅ 95% of the actuate current
Maximum Allowable Current Steady - 50A turns
Inrush - 300A turns for 10s
Actuate Current vs. Temp.
& Voltage ≤ ±5%
Response Times Overcurrent - ≤ 200ms
Undercurrent - ≤ 1s
Burden < 0.5VA
Output
Type Solid state
Form NO or NC
Rating 1A steady, 10A inrush
Voltage AC - 24 to 240VAC +10/-20%
DC - 3 to 50VDC
Voltage Drop AC NO & NC - ≅ 2.5V
DC NO & NC - ≅ 1.2V
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 44.5 mm (1.75”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals (2)
Sensor Hole 0.36 in. (9.14 mm) for up to #4 AWG
(21.1 mm2) THHN wire
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
TP = Trip Point
OC = Monitored Current
NO = Normally Open Output
NC = Normally Closed Output
R = Reset
