The Siemens SENTRON 3VA2325-5HN32-0CH0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C through 70 °C — no derating needed across that span, which simplifies panel sizing in warm enclosures. Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V, so it handles high-fault service-entrance or distribution positions without cascading upstream breakers. The 110 mm depth and 138 mm width fit standard MCCB panel footprints, and the built-in undervoltage release (UVR) plus 2 auxiliary switches and a trip alarm switch give the control wiring what it needs for status feedback and safety interlocks.
Interrupting capacity by voltage — the real fault-handling envelope
The 3VA2325-5HN32-0CH0 is rated for line protection, meaning its trip curve and short-time withstand are tuned for feeder and main breaker duty rather than motor or generator protection. At 240 V it clears 187 kA symmetrical — enough for most North American service-entrance positions.
At 110 mm deep, 138 mm wide, and 248 mm tall, this breaker fits standard MCCB mounting plates and enclosure cutouts. The 3-pole design with line protection curve means it's sized for cable/ busbar protection, not motor overload — pair it with a separate overload relay if feeding a motor starter.