The Siemens 3VA1110-6MH32-0BH0 is a 3-pole IEC frame 160 circuit breaker with a 70 kA breaking capacity at 415 V (class H), rated at 100 A. It is configured for starter protection with a TM120M thermal-magnetic release, but note: this variant ships without overload protection — the TM120M provides short-circuit protection only, with an adjustable instantaneous trip setting from 5 to 15 times In.
The 100 A continuous rating and the TM120M release suit motor starter protection where the upstream breaker provides short-circuit backup and a separate overload relay handles thermal protection. The UVR at 24 V DC allows remote undervoltage tripping, common in safety circuits or emergency-stop chains.
The nut keeper kit secures the breaker against vibration in mobile or high-shock applications. The UVR coil holds at 24 V DC nominal; verify the control transformer sizing if multiple UVRs are paralleled. Auxiliary switch wiring shares the same terminal compartment — maintain separation between control and power circuits per IEC 60947-1.