Siemens S01MN6 Molded Case Circuit Breaker Shunt Trip

Siemens S01MN6 Shunt Trip is an internal accessory for Siemens Sentron low-voltage molded-case circuit breakers (MCCBs), enabling remote tripping via a 120 VAC control signal. The accessory is designed for MD-, ND-, PD-, and RD-frame MCCBs and features wire-lead connections with left- or right-pole mounting to simplify installation in existing panels. When the 120 VAC coil is energized, the shunt-trip mechanism releases, causing the MCCB to open and interrupt the protected circuit. The S01MN6 is cataloged as a standalone shunt-trip option; Siemens catalogs also list related variants, such as S01MN64A for a shunt-trip with an auxiliary switch and other voltage configurations under the same S0xMN family. These shunt-trip accessories are used to enable remote protection in safety interlock, emergency-stop, or supervisory-control schemes by energizing a separate control circuit to trip the breaker. The model is specifically described as a 120 VAC shunt trip for molded-case breakers in the Sentron line, with the S01MN6 designation indicating the 120 VAC operation.