The Siemens 3VA1110-6MH32-0KH0 is a 3-pole molded-case circuit breaker in the 3VA1 IEC frame 160 platform, rated for 100 A continuous with a TM120M thermal-magnetic trip unit. Its headline number is the 70 kA breaking capacity at 415 V (class H) — that means it can safely interrupt a fault current up to 70,000 A without welding its contacts or venting arc gas into the panel. For a motor branch circuit or a feeder in a 415 V industrial distribution board, that's the figure that governs whether the breaker holds or fails on a bolted fault.
What the ratings mean for fit
The TM120M trip is starter-protection style — it's a thermal-magnetic curve tuned for motor starting inrush, with an adjustable magnetic pickup (Ii) from 5 to 15 times In. At the 100 A rating, that gives a short-circuit pickup range of 500 A to 1500 A. That's tighter than a standard distribution curve, so it coordinates better with a contactor and overload relay downstream. But note: this order code ships without overload protection — the thermal element is present in the TM120M, but the description flags 'without overload protection', meaning the thermal function may be disabled or the breaker is intended as a short-circuit protector only, paired with a separate overload relay. The shunt trip (STL) operates on 220-250 V DC or 208-277 V AC. That covers common control voltages in North American (277/480 V) and European (230/400 V) panels. The two HQ auxiliary switches plus one HQ trip alarm switch give remote status of the breaker position and fault condition — enough for a PLC to know whether the breaker is open, closed, or tripped on fault.