The Siemens 3VA1110-1AA36-0BH0 is a SENTRON 3VA1 switch disconnector in an MCCB-style housing — IEC frame 160, 3-pole, rated 100 A continuous. It is not a circuit breaker: there is no overload or short-circuit release inside. This is a load-break disconnect with an undervoltage release (UVR) for controlled opening when control voltage drops. The 24 V DC UVR coil pulls in to keep the main contacts closed; loss of voltage trips it open.
Thermal performance — flat derating to 70 °C
That matters in a sealed or poorly ventilated enclosure where ambient climbs. Maximum power loss is 38 W at full load, so the heat it dumps into the cabinet is predictable.
Front-terminal connection, clamp type, for the main circuit. Dimensions: 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint. Mechanical service life is 15 000 operating cycles typical. An optional motor drive can be added for remote switching.