DPRCD-M: Compact core for personal protection switches

With the DPRCD-M, residual current protection expert Doepke offers a compact module for assembling a five-pole personal protection switch (PRCD, portable residual current operated device) for 400 V sockets. Previously available as Type B SK, the portfolio is now being expanded with the DPRCD-M of Type B+.

Over just 8 module widths, the DPRCD-M modules combine an AC-DC sensitive residual current protection device with mains and protective conductor monitoring to increase the level of protection in mobile distribution boards. With a rated residual current of 30 mA, the DPRCD-Ms offer reliable personal protection and also ensure the protective function of upstream residual current circuit-breakers due to a 6 mA DC threshold.

If tripping occurs due to undervoltage, the DPRCD-Ms do not automatically switch on again when the voltage is restored, for safety reasons. The modules also offer external residual current and rotating field detection.

Personal protection switches are applied when sockets of existing electrical installations are used for consumers that require AC-DC sensitive residual current protection and the upstream protective measure is either unknown or insufficient. They are used between the socket and the load. Devices of Type B+ meet the requirements of DIN VDE 0100-420 and are therefore suitable for use in facilities at risk of fire.  

The DPRCD-Ms from Doepke are available up to a rated current of 63 A. They offer full flexibility: the modules can be installed in mobile distribution boards of various designs (DIN rail mounting). Typical applications include the construction sector, events industry and also rescue operations.