What it is and what the ratings mean
The Siemens 3VA1163-5MH36-0CC0 is a 3-pole IEC frame 160 molded-case circuit breaker with a 63 A rating and a 55 kA interrupting capacity at 415 V AC — that's the 'M' breaking capacity class, meaning it handles high fault currents typical of industrial distribution panels without needing an upstream current-limiting fuse. The TM120M thermal-magnetic trip unit provides fixed thermal protection (the 'TM' part) and adjustable magnetic pickup from 5 to 15 times In, so you set the short-circuit threshold to match the inrush of your motor or transformer load. No overload relay function here — this is a short-circuit-only protector for a starter circuit, not a combination motor starter.
Deployment context and integration
Mounts in a standard IEC 160 frame footprint on a DIN rail or panel-mount base. The clamp terminals accept copper or aluminum conductors up to the frame's rated cross-section — no lug kit needed for most panel builds. The built-in undervoltage release (UVR) coil is rated 120–127 V AC, 50/60 Hz, so it drops the breaker on loss of control voltage; that's your safety interlock for emergency-stop circuits or undervoltage protection schemes. Two HQ auxiliary switches give you status feedback to a PLC or indicator lamp.