What this 3VA1 MCCB carries and what it omits
The Siemens 3VA1110-5MH36-0DC0 is a 3-pole IEC frame 160 MCCB rated 100 A continuous, with a 55 kA breaking capacity at 415 V AC (class M). That Icu figure means it can safely interrupt a fault up to 55,000 A without welding or rupturing — sized for high-fault industrial distribution panels where the available short-circuit current is substantial. The TM120M thermal-magnetic trip unit provides starter protection: the thermal element tracks motor heating, while the magnetic pickup is adjustable from 5 to 15 times In (500 A to 1500 A) for short-circuit-only protection — there is no overload protection in this variant, so a separate overload relay must be wired upstream or in the motor starter assembly.
Panel integration and wiring
Clamp terminals accept copper conductors without lug kits — strip, insert, torque. The undervoltage release (UVR) coil is rated 208-230 V AC 50/60 Hz; if control power drops, the breaker trips instantly, which is standard for emergency-stop or safety isolation circuits where loss of control voltage must open the load. Two HQ auxiliary switches (form C) report breaker position back to a PLC or status lamp. The 3VA1 frame mounts on a DIN rail or panel plate; leave clearance above and below for arc-chamber venting per Siemens mounting instructions.