Breaking capacity and trip unit
The Siemens 3VA2325-0MS32-0KD0 is a 3-pole IEC frame 400 circuit breaker rated for 250 A continuous current, with a breaking capacity Icu of 200 kA at 415 V AC — that is class E in the 3VA2 line, meaning it handles very high fault currents typical of large transformer-fed distribution or motor control centers without needing an upstream current-limiting device. The ETU310M trip unit is a microprocessor-based release with adjustable short-circuit protection Ii from 3 to 15 times In, so you can tune the magnetic pickup to match motor inrush or feeder coordination curves without swapping the breaker.
Accessories and control wiring
Includes three auxiliary switch changeover contacts (form C) for remote status indication or interlocking; the busbar connection pattern matches the 3VA2 frame footprint, so it lands directly on standard Siemens panelboard or switchboard bus stacks.