The Siemens 3VA2325-7MN32-0DH0 is a SENTRON molded case circuit breaker (MCCB) in a motor protection design, rated for continuous 250 A across its full 40-to-70 °C ambient range without derating. Three poles, 330 kA interrupting capacity at 240 V — that SCCR drops to 7.5 kA at 690 V, so the voltage class you feed it governs the fault-clearing headroom.
SCCR and selectivity planning
This breaker carries 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 7.5 kA at 690 V. For a 480 V panel, the 187 kA figure is the one that decides whether upstream fuses or a current-limiting main breaker are needed to stay within the panel SCCR rating. The 4-to-17-second trip band (minimum to maximum) tells you the short-time delay range available for selectivity coordination with downstream feeders.
Internal configuration and panel fit
The basic switch is the 3VA2325-7MN32-0AA0, fitted with two auxiliary switches plus one trip alarm switch (HQ configuration) and an undervoltage release (UVR). Phase-failure detection is built in; no ground-fault monitoring. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — standard 3-pole MCCB footprint for a 250 A frame, so it swaps into an existing SENTRON panel bucket without re-drilling the mounting plate.
Environmental and thermal limits
Operating range is -25 to +70 °C; storage range is -40 to +80 °C. Maximum power loss is 40 W — relevant for thermal rise inside a sealed enclosure. The flat 250 A rating from 40 through 70 °C means no derating curve to calculate for typical industrial panel ambient temperatures.