The Siemens 5SU1356-0DA10 is a combined residual current device and miniature circuit breaker (RCD/MCB combo) — an FI/LS protector. It's built for final-circuit protection where both overcurrent and earth-fault protection are needed in one 1+N-pole unit, saving a DIN-rail slot compared to separate devices. Rated B 10A for the overcurrent side (trips at 3–5× In for short-circuit and overload) and 30mA sensitivity for the residual-current side, Type AC (detects sinusoidal AC fault currents only). Breaking capacity is 6kA — sized for domestic and light commercial distribution boards where the prospective short-circuit current stays under that threshold. The pig-tail connection means the neutral lead exits the device as a flexible wire, intended for the incoming neutral busbar in a consumer unit or distribution board. That's a common fit in European-style DIN-rail enclosures.
For a BOM freeze or a panel-build project, the current lifecycle status means you can specify this order code without an immediate replacement watch. Availability and current pricing are confirmed at quote time against an RFQ through independent distribution.