The Siemens 3VA1110-6MH32-0HA0 is a 3-pole IEC frame 160 circuit breaker with a 100 A rated current and a breaking capacity class H — 70 kA at 415 V AC. That 70 kA interrupting rating means it can safely clear a fault up to that level without upstream devices needing to trip, which simplifies selectivity coordination in a distribution panel. The shunt trip (STL) operates on 12–30 V DC or 24 V AC 50/60 Hz, letting you remotely trip the breaker from a safety circuit or E-stop string.
Starter protection and short-circuit settings
This breaker is configured for starter protection with a TM120M thermal-magnetic trip unit. The magnetic short-circuit pickup Ii is adjustable from 5 to 15 times In (500 A to 1500 A at 100 A In). That range lets you set it to ride through motor inrush while still clearing a bolted fault — typical for a motor branch circuit where the starter itself provides the overload function. Note the description explicitly states 'without overload protection' — the TM120M here is set for short-circuit protection only; the motor's thermal overload relay handles the running overcurrent.
Integration and mounting
The 3VA1 frame mounts on a DIN rail or can be screw-fixed to a backplate. The nut keeper kit (included per the order code suffix) holds the terminal nuts captive during wiring — saves time when you're torquing down lugs in a tight enclosure. The shunt trip coil draws its control power from a separate 24 V supply; keep the wiring separate from the main power path to avoid nuisance trips from coupled noise.