The Siemens 5SM2746-6 is a 4-pole residual current unit (RC unit), type A, rated at 63 A with a 500 mA sensitivity and 400 V AC supply voltage. It's designed to mount with the 5SL miniature circuit breaker series to form an RCBO assembly — one unit per DIN-rail slot, saving panel space over separate RCCB and MCB.
Compliance paperwork
RoHS compliant since 30 June 2025, with REACH Article 33 duty-to-inform data available on the current candidate list. No UL or IEC listing appears in the spec record — typical for a European-market RC unit, but verify with your local Siemens office if your panel requires a UL mark.