Residual current protection socket 30 mA with shutter, matt black (painted) - The residual current protection socket is a stationary protective device with voltage-independent residual current tripping in accordance with VDE 0664. - Functional principle corresponds to that of a residual current circuit breaker. Installation in a deep device box. Increased contact protection (Safety Plus) in accordance with DIN VDE 0620-1. Residual current protective devices (RCDs) in a structural unit with a socket can also provide protection for an adjacent socket (under a common cover), DIN VDE 0100-530:2018-06.