What the ratings mean for fit
The 3VA1163-5MH32-0CC0 is a 3-pole IEC frame 160 circuit breaker with a 55 kA interrupting capacity at 415 V AC — that's breaking capacity class M, meaning it can safely clear faults up to 55 kA without upstream cascading, which matters when you're coordinating selectivity in a main or sub-distribution panel. The TM120M thermal-magnetic trip unit is set at 63 A (In) and provides starter protection for motor circuits: the thermal element tracks motor heating, the magnetic pickup is adjustable 5–15 x In for short-circuit protection, and there is no separate overload relay needed — the breaker itself does that job. The built-in undervoltage release (UVR) operates on 120–127 V AC 50/60 Hz, so it drops the breaker if control voltage is lost — standard for safety circuits where a loss of control power must open the motor branch. Two auxiliary switches (HQ type) provide status feedback to the PLC or indication lamp.
Lifecycle and sourcing reality
For BOM-line commitment, the key fit criteria are the 63 A TM120M trip, the 55 kA @ 415 V interrupting rating, and the UVR voltage (120-127 V AC). If those match your panel design, the part is spec'd and can be sourced to order against an RFQ through independent distribution.
Deployment context
Mounts on a standard DIN rail inside an enclosure — the nut keeper kit (included) holds the breaker in place during wiring, which is a small time-saver on the panel build. The UVR coil draws continuously when energized; verify the control transformer is sized for the holding current.