The Siemens 3VA1163-5MH32-0AH0 is a 3-pole IEC circuit breaker in the 3VA1 frame 160 series, rated at 63 A with a breaking capacity class M delivering Icu=55 kA at 415 V. It is configured for starter protection with a TM120M thermal-magnetic release (AM characteristic) and adjustable short-circuit protection Ii=5...15 x In. The unit ships with a nut keeper kit, two HQ auxiliary switches, and one HQ trip alarm switch.
What the ratings mean for fit
The 55 kA Icu at 415 V places this breaker in the M (medium) breaking capacity class — sufficient for most industrial distribution panels where the prospective short-circuit current at the main bus does not exceed that level. The TM120M trip unit provides thermal-magnetic overload and short-circuit protection; the AM characteristic means the magnetic trip is adjustable from 5 to 15 times the rated current (315 A to 945 A), letting you coordinate with downstream motor starters or branch feeders. The 63 A continuous rating matches a 63 A bus or feeder tap.
Panel integration notes
The 3VA1 frame 160 mounts on a DIN rail or can be screw-fixed to a backplate. The included nut keeper kit secures the busbar connections without loose hardware. The two HQ auxiliary switches and one HQ trip alarm switch provide remote status indication — wire them into the PLC digital input bank for breaker position and trip feedback.