Panel fit and interrupting capacity
The Siemens 3VA2225-6KP32-0AE0 is a 3-pole SENTRON molded case circuit breaker rated for 250 A continuous current at 40 °C, with a thermal derating curve that drops to 200 A at 70 °C ambient — so if your panel runs hot near the top of the enclosure, size the load side for the derated figure, not the nameplate. Interrupting capacity hits 242 kA at 240 V and 187 kA at 415/440 V, which gives solid selectivity headroom downstream of a transformer or main breaker — no need to overspec upstream gear just to cover fault current. Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — fits standard MCCB panel cutouts; the 105 mm width is the same across the 3VA2 250 A frame, so swapping between trip ratings doesn't require re-drilling the mounting plate.
Trip range and auxiliary options
The electronic trip unit is adjustable from 375 A to 2 500 A. This variant ships with 4 HQ auxiliary switches (form C) and a communication module onboard, so it can report status and trip events to a PLC or BMS without an add-on module — saves a DIN slot and wiring time.
Maximum power loss is 48 W at rated load; factor that into enclosure ventilation if you're grouping several breakers in a sealed panel.