What this MCCB delivers on a motor branch
The Siemens 3VA2325-5MN32-0JL0 is a 3-pole SENTRON molded case circuit breaker designed specifically for motor protection, with phase failure detection built in. Rated current holds flat at 250 A from 40 °C through 70 °C — no derating curve to chase across a warm panel. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 500 V, so it handles high-fault utility feeds without cascading upstream. The flat current rating means you size it once and forget ambient drift inside a packed enclosure.
Auxiliary hardware and wiring
This order code ships with a shunt trip (STL) release and a full complement of auxiliary contacts: two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ design). That gives you remote trip capability plus status feedback without adding a separate accessory block. The basic switch assembly is order code 3VA2325-5MN32-0AA0, which means the internal switching mechanism is a known, replaceable subassembly if it ever needs service. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — fits a standard MCCB footprint on the DIN rail or panel-mount plate.