Molded case circuit breaker for motor protection
The Siemens SENTRON 3VA2325-5MN32-0DH0 is a 3-pole molded case circuit breaker (MCCB) designed specifically for motor protection, rated at 250 A continuously across the full ambient range from 40 °C to 70 °C. Its interrupting capacity reaches 187 kA at 240 V and 121 kA at 415/440 V, dropping to 75.6 kA at 500 V and 7.5 kA at 690 V — figures that define the available fault current the breaker can clear without upstream coordination issues. The breaker includes an undervoltage release (UVR) and phase failure detection, plus a 2-auxiliary-switch + 1-trip-alarm-switch HQ configuration, giving the panel builder both protection and status feedback in one package.
Physical fit and panel integration
Dimensions are 248 mm high, 138 mm wide, and 110 mm deep — a standard SENTRON 3VA footprint that fits existing DIN-rail or panel-mount layouts without rework. Maximum power loss is 40 W; plan for adequate ventilation if the breaker is enclosed with other heat-generating devices.