| Item Description | Residual current monitoring device with memory / supply voltage 230V AC, internal memory, RCM currents type a, b, b+, MODBUS rtu, DIN rail mounting (4TE) / for detection, evaluation and monitoring of residual currents of types a, b and b+ according to IEC 62020 in TN and TT systems (grounded AC systems) using conventional feedthrough or convertible residual current transformers (type a, b etc.) using a patented measurement method. Possibility of optical or acoustic warning via an external circuit when the residual current threshold values are reached and forwarding of the exceeding via the communication interface to e.g. A building control system for permanent residual current monitoring. Current transformer connection monitoring (wire breakage or short-circuit monitoring per channel), detection of sinusoidal alternating residual currents with frequencies up to 20 KHZ (type b+), detectio |