Residual current monitoring device RCM 202-AB The RCM 202-AB is used with connected current transformers to measure and monitor residual currents of type A, B and B+ in TN and TT systems (earthed AC systems).Supply voltage:85 ... 305 V AC (50/60Hz)- Residual current measurement via up to two connected current transformers- Transformer connection monitoring for wire breakage or short circuit per channel- Recording, evaluation and monitoring of residual currents of type A and B in accordance with IEC 62020- Recording of sinusoidal alternating residual currents with frequencies up to 20 kHz (type B+)- Measured value and extreme value memory with time stampMeasuring channels- Two current transformer connections (compatible with all Janitza residual current transformers)- Measuring range AC/DC: 10mA ... 20AMeasured value display and operation- Two-color LED display (128 x 64 Pixel)- 3-button operation- German, English and Spanish user interface selectableCommunication- RS485 interface (protocol: Modbus RTU)- Compatible with all communication-capable Janitza Modbus master devices
