Rated current and interrupting capacity
The Siemens 3VA2325-5MN32-0BA0 is a SENTRON molded case circuit breaker (MCCB) rated for a continuous current of 250 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel thermal budgeting for motor feeder circuits. Its interrupting capacity reaches 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V — figures that place it in the high-interrupting class for industrial distribution, suitable for installations with high available fault current upstream.
Physical integration and environmental limits
Dimensions are 248 mm high, 138 mm wide, and 110 mm deep — a standard 3-pole MCCB footprint for panel mounting on a DIN rail or direct screw fixing. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power dissipation is 40 W, which should be factored into enclosure thermal calculations, especially in sealed cabinets.