© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/
Rev: 1-A-062716
Protection Relays
Current Monitoring Relays and Transducers
Current measuring
device
Voltage measuring
device
LCSC10T12
Current Sensor
Connection for
4-20mA Loop
To LCSC10T12
Current Sensor Jumper used when
current source is not
LCSC10T12
Connection for
Analog Voltage Output
Connect One:
VDA = 1 to 5VDC
VDB = 2 to 10VDC
C
D
A
B
249Ω
249Ω
DCSA
A
D = Instrument, meter or PLC input
PS = Power Supply
LCSC10T12
Current Sensor
Connect One:
A = 1 to 5VDC
B = 2 to 10VDC
DCSA50
AD = Instrument, Meter,
or PLC Input
PS = Power Supply
www.littelfuse.com/dcsa
DCSA SERIES
Description
The DCSA Series is a loop-powered, linear output current
transducer that provides an output that is directly proportional to
the RMS AC current passing through the LCSC10T12 sensor. The
DCSA Series provides either an analog current or voltage: 4-20
mA, 1 to 5VDC, or 2 to 10VDC. Each unit is factory calibrated
for monitoring (with the LCSC10T12 connected) in one of four
ranges; 0-5, 0-10, 0-20, or 0-50A. Zero and span adjustments
allow field calibration if needed. The DCSA Series mounts on
both DIN 1 and DIN 3 rails.
Operation
The DCSA Series varies the effective resistance of its output
in direct proportion to the current flowing in the conductor
monitored by the LCSC10T12. Connecting the power supply to
terminals C & D provides a 4 to 20mA DC current. Connect the
power supply to terminals C & A to get 1 to 5VDC at terminal D.
Connect the power supply to terminals C & B to get 2 to 10VDC
at terminal D.
Features
Mounts on DIN 1 or DIN 3 rail
0-50A in 4 ranges using LCSC10T12 sensor
Loop powered from 10 to 30VDC
Linear output from 4-20mA, 1-10VDC
Zero & span adjustments
Separate sensor & control unit
Accessories
LCSC10T12 Toroidal Current Sensor
Remote monitoring of currents up to 50A.
Wiring Diagram
Current Transducers
CONNECTION FOR 4 - 20 MA LOOP
To LCSC10T12 Current Sensor
Current measuring
device
Voltage measuring
device
LCSC10T12
Current Sensor
Connection for
4-20mA Loop
To LCSC10T12
Current Sensor Jumper used when
current source is not
LCSC10T12
Connection for
Analog Voltage Output
Connect One:
VDA = 1 to 5VDC
VDB = 2 to 10VDC
C
D
A
B
249Ω
249Ω
DCSA
A
D = Instrument, meter or PLC input
PS = Power Supply
Connect One:
A = 1 to 5VDC
B = 2 to 10VDC
Jumper used when current
source is not LCSC10T12
CONNECTION FOR ANALOG
VOLTAGE OUTPUT
DCSA50
AD = Instrument, Meter,
or PLC Input
PS = Power Supply
Ordering Information
MODEL CURRENT RANGE WITH
LCSC10T12 INPUT RANGE (F TO E)
DCSA5 0-5A 0-5mA AC
DCSA20 0-20A 0-20mA AC
DCSA50 0-50A 0-50mA AC
If you don’t find the part you need, call us for a custom product 800-843-8848
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/
Rev: 1-A-062716
Protection Relays
Current Monitoring Relays and Transducers
www.littelfuse.com/dcsa
DCSA SERIES
Specifications
Input
Ranges (without
LCSC10T12 connected)
4 factory calibrated ranges
in mA AC 0 - 5mA, 0 - 10mA, 0 - 20mA, or 0 - 50mA AC
Factory calibration ±0.5% of full scale
Repeat Accuracy ±0.25% of full scale under fixed conditions
Response Time ≅ 300ms
Temperature Coefficient ±0.05%/°C
Input to Output Not isolated
Output
Type
Analog Current directly proportional to input current
Range 4 - 20mA, or 1 to 5VDC or 2 to 10VDC
Supply Voltage* 10 to 30VDC
Momentary Voltage 40VDC for 1m
Zero Adjust ≅ 3.75 - 4.25mA
Span Adjust 18mA - 22mA
Adjustment Mini-screw, multi-turn potentiometer
Protection
Dielectric Breakdown ≥ 2500V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity Units are reverse polarity protected
Mechanical
Mounting DIN 1 & DIN 3 rail mounting
Termination
Wire clamp For 22 - 14AWG (.336 mm2 ... 2.5 mm2)
Environmental
Operating/Storage
Temperature -30° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 1.6 oz (45.4 g)
Accessory - LCSC10T12 Toroidal Sensor
Number of Turns 1000
Nominal Output Current
Full Range 0 - 50 mA
Maximum Allowable Current Steady 50A turns; Inrush 300A turns for 10s
Burden ≤ 0.5 VA
Frequency
0 - 20A / 21 - 50A 20/100 Hz / 30/100 Hz
Sensor Hole 0.36 in. (9.14 mm) for up to #4 AWG
(21.1 mm2) THHN wire
Weight ≅ 1 oz (28.3 g)
*Minimum loop-power supply voltage equals the minimum sensor voltage 10VDC plus the
voltage drop developed across all the other loop devices at 20mA.
Monitored Current Amps Diagram
4 12 20
mA
A
50, 20, 10, 5
25, 10, 5, 2.5
0
Monitored
Current
Amps
2
1
6
3
10
5
VDC
Output
