The FRCdM meets the highest requirements for the protection of both people and equipment. Types B, B+ and Bfq RCCBs detect AC pulsating, DC residual and smooth DC residual currents.
Type B RCCBs are the standard type and are sensitive to all residual currents up to 1 kHZ. Type B+ devices are sensitive to all residual currents while also being equipped with a special tripping curve that limits the tripping current to max. 420 mA for frequencies up to 20 kHz. Type Bfq devices meanwhile can tolerate system-induced earth leakage currents at higher frequencies up to 50 kHz.
The digital RCCBs from the xPole series can do more than just switch off. They monitor electrical installations and give advance warning of critical current flows, so that system shutdowns – and the associated costs – can be avoided.