The Siemens SENTRON 3VA2225-7HL32-0HC0 is a 3-pole molded case circuit breaker rated for 250 A continuous current, designed for line protection in distribution panels. It carries a shunt trip release (STL) and two HQ auxiliary switches, with no undervoltage release or ground-fault monitoring built in. Breaking capacity runs 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V — so at typical 480 V distribution levels it clears faults well above most service-entrance requirements. The trip unit is adjustable between 375 A and 2 500 A, meaning this breaker can be set to protect a feeder or a large motor circuit within that window. Thermal derating is published: full 250 A up to 50 °C, then 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, 213 A at 70 °C. If the panel ambient runs hot, that curve tells you exactly where the continuous rating lands.
Panel fit and footprint
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON distribution blocks and panelboards without re-drilling. No communication module on board, so it's a straight power path with auxiliary contacts for status feedback. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Max power loss at rated load is 48 W — factor that into enclosure ventilation if the panel is densely packed.