Interrupting ratings — what they mean for the panel
This breaker delivers 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. At typical 480 V industrial feeds (between the 440 V and 500 V entries) you're looking at well over 75 kA of interrupting capacity — that's serious headroom for high-fault panels. The steep drop to 3.7 kA at 690 V is expected: 3-pole breakers on a 690 V line see each pole across a higher voltage, and the arc extinction gets harder.
Motor protection features and auxiliary wiring
Designed as a motor protection circuit breaker, the 3VA2110-5MN32-0KH0 includes phase failure detection — a must for three-phase motor circuits where a lost phase can burn a winding before the overload relay catches it. No undervoltage release on this variant, so if you need UVR for safe-start sequencing, this isn't the order code. No ground-fault monitoring either — that's a separate variant.
The supplied basic switch is order code 3VA21105MN320AA0, which is the internal switching mechanism; the full assembly ships as the 3VA2110-5MN32-0KH0.
Maximum power loss is 10 W — low enough that it won't drive internal enclosure temperature up significantly, but if you're packing multiple breakers in a small panel, sum the losses for thermal calculations.