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.
Maximum power loss is 40 W; plan for adequate ventilation if the breaker is enclosed with other heat-generating devices.