The Siemens SENTRON 3VA1112-3EF32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 125 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release designed for line protection. It delivers a maximum interrupting capacity of 75.6 kA at 240 V, stepping down to 52.5 kA at 415 V and 11.9 kA at 690 V — figures that govern its fault-clearing ability in a given network voltage.
Panel integration
Maximum power dissipation is 28.1 W at full rated load. In a sealed or poorly ventilated enclosure, that heat must be factored into the thermal budget — especially if the breaker is grouped with other heat-generating devices.