What this MCCB delivers
The Siemens SENTRON 3VA2325-5HN32-0AC0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current with no derating across the full ambient range from 40 °C to 70 °C — a flat thermal curve that simplifies panel design in hot enclosures. Interrupting capacity reaches 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, covering high-fault service-entrance and distribution applications. The design is line protection (not motor protection), with no undervoltage release, no ground-fault monitoring, and no communication function. Two auxiliary switches HQ are built in. The supplied basic switch is order code 3VA2325-5HN32-0AA0.
Integration dimensions
The breaker measures 110 mm deep, 138 mm wide, and 248 mm high. It mounts on a DIN rail or panel-mount base in a standard distribution enclosure. Maximum power loss is 37.5 W, which should be factored into enclosure thermal calculations. Storage temperature range is -40 °C to 80 °C; operating range is -25 °C to 70 °C.
