What this 3VA1 breaker carries
The Siemens 3VA1163-5MH36-0DC0 is a 3-pole IEC frame 160 circuit breaker in the 3VA1 series, rated 63 A with a breaking capacity class M delivering Icu=55 kA at 415 V AC. It is configured as a starter-protection device with a TM120M thermal-magnetic release — note the TM120M is set for motor-starting duty, not general distribution — and the short-circuit protection trip threshold Ii is adjustable from 5 to 15 times In. The unit includes an undervoltage release (UVR) for 208–230 V AC, 50/60 Hz, plus two HQ auxiliary switches.
Lifecycle and sourcing posture
For procurement: this part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
Deployment context — panel integration
The 3VA1 frame 160 mounts on a DIN rail or panel base in a standard distribution or motor-control center enclosure. The clamp connections accept copper or aluminum conductors; the undervoltage release coil draws from a 208–230 V AC control supply, so verify the control transformer secondary matches that range before wiring. The two HQ auxiliary switches provide status feedback to a PLC or safety relay — typically wired as normally-open for breaker position indication.