The Siemens 3VA1163-6MH32-0CA0 is a 3-pole IEC frame 160 circuit breaker rated 63 A with a breaking capacity class H — Icu of 70 kA at 415 V AC. This variant is configured for starter protection with a TM120M thermal-magnetic trip unit, but note the description explicitly states it provides short-circuit protection only — no overload protection is included. The short-circuit pickup Ii is adjustable 5 to 15 x In (315 A to 945 A). Mounts on standard DIN rail or panel-mount within the 3VA1 enclosure family.
Integration Notes
The 3VA1 frame accepts plug-in accessories like auxiliary contacts, shunt trips, and alarm switches — the UVR here occupies one accessory slot. Verify the nut keeper kit is installed before torquing busbar connections; it prevents hardware migration under vibration. At 63 A on a 160 A frame, thermal rise is well within limits — the larger frame gives headroom for higher ambient temperatures or enclosed panel mounting without derating concerns. The class H breaking capacity (70 kA @ 415 V) exceeds typical 25-50 kA requirements for most industrial distribution, so selectivity coordination with downstream breakers is straightforward.