What this MCCB delivers for a motor branch circuit
The Siemens 3VA1110-5MH36-0HC0 is a 3-pole IEC frame 160 molded case circuit breaker rated 100 A, configured as a starter protector without overload relays — it provides short-circuit protection only, with an adjustable instantaneous trip Ii of 5...15 x In. That 55 kA breaking capacity at 415 V (class M) means it can safely interrupt faults up to that level on a 415 V line without cascading upstream, which is the deciding spec for panel SCCR compliance. The built-in shunt trip (STL) accepts 12–30 V DC or 24 V AC control, and the two HQ auxiliary switches give status feedback to a PLC or safety circuit.
Integration into a panel
The clamp connection terminals accept copper or aluminum conductors, and the frame mounts on a standard DIN rail or panel-mount base. The shunt trip coil draws from a separate control transformer or 24 V DC supply; verify the control wiring polarity for DC operation to avoid nuisance tripping.