What this breaker does on a motor circuit
The Siemens 3VA2440-5MP32-0AF0 is a 3-pole IEC frame 630 motor protection circuit breaker rated 400 A continuous, with a breaking capacity of 55 kA at 415 V (class M). The ETU550M electronic trip unit gives you LSI protection: long-time (overload) adjustable from 160 A to 400 A, short-time (short-circuit) from 1.2x to 15x In, and instantaneous from 3x to 15x In. That range covers most medium motor loads — pumps, conveyors, compressors — where you need thermal memory and selective coordination downstream.
What's on the nameplate
Built into the 3VA2 IEC frame 630 platform with busbar connection.