MCCB for line protection — 250 A, no derating to 70 °C
The Siemens SENTRON 3VA2325-5HL32-0CC0 is a 3-pole molded case circuit breaker rated for 250 A continuous current, with a breaking capacity of 187 kA at 240 V AC and 121 kA at 415/440 V AC. It holds its full 250 A rating across the entire operating temperature range from -25 °C up to 70 °C — no derating needed even in a hot panel. The unit includes an undervoltage release and two auxiliary switches (HQ design), making it ready for remote status feedback and safety trip circuits out of the box.
Breaking capacity across voltage levels
This MCCB delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. The steep drop at 690 V is typical for a frame this size — if your distribution runs at 690 V, verify the available fault current stays under 7.5 kA or step up to a higher-rated frame.
Panel fit and dimensions
Dimensions are 110 mm deep, 138 mm wide, and 248 mm tall. The 3-pole footprint matches the standard SENTRON 3VA mounting pattern — drops into existing panel cutouts and busbar arrangements without modification.