Protection Relays
Current Monitoring Relays and Transducers
DCSA SERIES
Current Transducers
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.
Wiring Diagram
CONNECTION FOR 4 - 20 MA LOOP
Connection for
Connection for
4-20mA Loop
4-20mA Loop
Features
JJ
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
JJ
DCSA50
Connect One:
A = 1 to 5VDC
Current
2 to 10VDC
B =
measuring
LCSC10T12
LCSC10T12
Current Sensor
Current Sensor
LCSC10T12
Current Sensor
JJ
JJ
JJ
JJ
Current measuring
device
device
AD = Instrument, Meter,
or PLC Input
PS = Power Supply
Accessories
LCSC10T12 Toroidal Current Sensor
Remote monitoring of currents up to 50A.
To LCSC10T12
Current Sensor
To LCSC10T12 Current Sensor
Current Sensor
To LCSC10T12
Jumper used when
Jumper used is not
current sourcewhen
Jumper used when
current source is not
current
LCSC10T12
source is not LCSC10T12
LCSC10T12
Connection for
Connection for
FOR ANALOG
Analog Voltage Output
CONNECTION
Analog Voltage Output
VOLTAGE OUTPUT
C
C
D
D
A
A
B
B
DCSA
DCSA
Ordering Information
MODEL
DCSA50
Connect One:
A =
measuring
Voltage
1 to 5VDC
Voltage
2 to 10VDC
B =
measuring
device
249Ω
DCSA5
249Ω
DCSA20
CURRENT RANGE WITH
LCSC10T12
INPUT RANGE (F TO E)
0-5A
0-20A
0-50A
0-5mA AC
0-20mA AC
0-50mA AC
device
249Ω
DCSA50
249Ω
If you don’t find the part you need, call us for a custom product 800-843-8848
Connect One:
Connect One:
V
DA
= 1 to 5VDC
1 5VDC
V
DB
= 2 to 10VDC
DA
V
DB
= 2 to 10VDC
AD = Instrument, meter or PLC input
AD = Power Supply
PS Instrument, meter or PLC input
PS = Power Supply
AD = Instrument, Meter,
or PLC Input
PS = Power Supply
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/dcsa
www.littelfuse.com/
Rev: 1-A-062716
Protection Relays
Current Monitoring Relays and Transducers
DCSA SERIES
Specifications
Input
Ranges (without
LCSC10T12 connected)
4 factory calibrated ranges
in mA AC
Factory calibration
Repeat Accuracy
Response Time
Temperature Coefficient
Input to Output
Output
Type
Analog
Range
Supply Voltage*
Momentary Voltage
Zero Adjust
Span Adjust
Adjustment
Protection
Dielectric Breakdown
Insulation Resistance
Polarity
Mechanical
Mounting
Termination
Wire clamp
Environmental
Operating/Storage
Temperature
Humidity
Weight
0 - 5mA, 0 - 10mA, 0 - 20mA, or 0 - 50mA AC
±0.5% of full scale
±0.25% of full scale under fixed conditions
≅
300ms
±0.05%/°C
Not isolated
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 mm
2
) 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.
Current directly proportional to input current
4 - 20mA, or 1 to 5VDC or 2 to 10VDC
10 to 30VDC
40VDC for 1m
≅
3.75 - 4.25mA
18mA - 22mA
Mini-screw, multi-turn potentiometer
≥ 2500V RMS terminals to mounting surface
≥
100 MΩ
Units are reverse polarity protected
DIN 1 & DIN 3 rail mounting
For 22 - 14AWG (.336 mm
2
... 2.5 mm
2
)
Monitored
Monitored Current Amps Diagram
Current
Amps
50, 20, 10, 5
25, 10, 5, 2.5
A
Output
1
mA
4
VDC
2
0
12
6
3
20
10
5
-30° to 60°C / -40° to 85°C
95% relative, non-condensing
≅
1.6 oz (45.4 g)
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/dcsa
www.littelfuse.com/
Rev: 1-A-062716
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