Residual current/circuit breaker (RCBO) for combined protection against overload, short circuit and residual currents, VDE tested and certified according to DIN EN 61009-1, DIN EN 61009-2-1. Easy connection of conductors of different cross sections thanks to double chamber terminals; other Siemens SENTRON protective circuits can be quickly and easily connected to the Siemens pin busbars 5ST3. Quick access to all technical data using data matrix code on the device via the Siemens Industry Online Support App. The Siemens SENTRON protective circuitry devices can be extended with many functions with the continuous accessories from the modular system. Simply safe with Siemens technology.