What this breaker delivers
The Siemens 3VA2325-6KP32-0BA0 is a 3-pole IEC frame 400 circuit breaker with a class H interrupting rating of 85 kA at 415 V AC — that is the short-circuit current it can safely clear without welding its contacts or rupturing the arc chamber, which is the deciding spec for high-fault panels like main switchboards or large motor control centers. It ships with an ETU850 electronic trip unit configured for LSI protection: long-time pickup Ir adjustable from 100 A to 250 A, short-time pickup Isd from 0.6 to 10× In, and instantaneous pickup Ii from 1.5 to 12× In. That range covers feeder and large motor protection in one package — you set the Ir to match the load and leave the short-time band for selective coordination downstream. The built-in undervoltage release (UVR) operates at 24 V DC, so it drops the breaker when control power is lost — standard for emergency-stop circuits or undervoltage protection schemes in industrial panels.
Integration notes
This is an IEC frame 400 breaker — it mounts on a standard DIN rail or fixed panel-mount base, and the 3VA2 family shares the same accessory platform (auxiliary contacts, shunt trips, motor operators) across the frame sizes. If you are retrofitting a panel that previously held a 3VL or older 3VF series, check the busbar pitch and terminal lug range; the 3VA2 footprint is compatible with most IEC switchboard layouts. The ETU850 is a self-powered electronic trip unit — it draws its energy from the current transformers on each phase, so no external control power is needed for the protection functions. The UVR coil, however, requires a separate 24 V DC supply; factor that into your control transformer sizing.