Motor protection MCCB with 250 A continuous rating and 330 kA interrupting capacity
The Siemens SENTRON 3VA2325-7MN32-0HA0 is a 3-pole molded case circuit breaker (MCCB) in the motor protection version, rated for a continuous current Iu of 250 A. Its breaking capacity reaches 330 kA at 240 V AC, 242 kA at 415/440 V, 187 kA at 500 V, and 52.5 kA at 690 V — figures that place it in the high-interrupting class for industrial feeder and motor branch circuits. The rated insulation voltage Ui is 800 V. This version ships with an ETU350M electronic trip unit (overcurrent release) and an integrated shunt trip (STL) auxiliary release. It includes phase failure detection and a voltage trigger, but no undervoltage release, no auxiliary contacts, no ground fault monitoring, and no communication function. The basic switch is order code 3VA2325-7MN32-0AA0; the integrated auxiliary trip is 3VA9688-0BL30. Rated current holds at 250 A from 40 °C through 50 °C, then derates to 240 A at 55 °C, 235 A at 60 °C, 230 A at 65 °C, and 225 A at 70 °C. Mechanical endurance is 15,000 cycles. Maximum power loss is 37.5 W. Operating temperature range is -25 °C to +70 °C; storage range is -40 °C to +80 °C.
Panel fit and mounting dimensions
The 3VA2325-7MN32-0HA0 measures 248 mm high × 138 mm wide × 110 mm deep. It mounts on a DIN rail or directly to a backplate via the SENTRON 3VA series mounting accessories. The 138 mm width is three pole spaces at 46 mm per pole — standard for this class of MCCB. Verify gland plate clearance for the 110 mm depth plus wiring bend radius when laying out the enclosure.