The AC/DC sensitive residual current monitoring module monitors electrically earthed power supplies up to 300 V and connected loads up to nominal currents of 32 A for leakage and fault currents. The module is intended for installation in distribution equipment such as PDUs (Power Distribution Units), outlet boxes or multiple socket-outlets and is supplied with DC 12…24 V.

The RCMB131-02 is designed for installation in PDUs and outlet boxes. The module outputs the rms value of the residual current via a PWM output, which is read out and evaluated by a higher-level circuit.

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  • AC/DC sensitive leakage and fault current monitoring for preventive maintenance
  • Suitable for PCB mounting
  • High resolution for implementing equipment leakage current monitoring
  • Measurement signal output via PWM output
  • Frequency range DC…2 kHz
  • Compact design for monitoring nominal loads up to In = 32 A
  • Low load current sensitivity due to fully shielded measuring current transformer
  • Continuous monitoring of the connection to the measuring current transformer
  • Integrated test function
  • Supply voltage DC 12…24 V


Variants of RCMB131-02

TypeMeasuring rangeSupply voltageUsArt. No.
RCMB131-020…100 mA (rms)DC 12…24 VB94042132

Downloads for RCMB131-02



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