TCSA50 - TCSA Series

Series: TCSA Questions? Contact Littelfuse Support
Littelfuse Current Monitoring Relays Transducers
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The TCSA 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 onboard toroid. The TCSA provides a 4 - 20mA output over a power supply range of 10 - 30VDC. Each unit is factory calibrated for monitoring in one of four ranges; 0-5, 0-10, 0-20, or 0-50A. The 0 - 5A range allows the use of external current transformers so loads up to 1200AC amps can be monitored.


See datasheet for operation details.

Property (Mouseover for details) Value
Output Voltage 10 to 30 VDC
Output Range 4-20mA
Momentary Output Voltage (V) 40VDC for 1m
Output Type Series connection current directly proportional to monitored current
Response Time (ms) ≅300ms
Repeat Accuracy (%) ≤±0.25% of full scale under fixed conditions
Sensor Type Toroidal Through-Hole Wiring; Alternating current monitored conductor must be properly insulated
Current Sensor Range 0 - 50A; ≤±2% full scale; Maximum: Steady - 50A turns; Inrush - 300A turns for 10s
Sensor Frequency (Hz) 30-100Hz
Sensor Hole Size 0.36 in. (9.14mm) for up to #4 AWG (21.1mm2) THHN wire
Polarity Units are reverse polarity protected
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Burden (VA) ≤0.5VA
Adjustment Type Mini-screw 25-turn potentiometer
Span Adjust (mA) 18mA - 22mA
Zero Adjust (mA) ≅3.75 - 4.25mA
Temperature Coefficient (% / C) ±0.05% / °C
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with one #10 (M5 x 0.8) screw
Operating Temperature -30° to 60°C (-22°F to 140°F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Humidity 95% relative non-condensing
Dimensions 2.00 x 2.00 x 1.75 in. (50.8 x 50.8 x 44.5mm)
Weight (lbs/g) ≅2.4oz (68g)