The Siemens SENTRON 3VA1125-3EF32-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. It carries a 75.6 kA interrupting capacity at 240 V, stepping down to 52.5 kA at 415 V and 32 kA at 440 V — enough to handle high-fault utility feeds or transformer secondaries in a distribution panel. The only auxiliary is a shunt trip (STL) release, ordered separately as 3VA9688-0BL33. For a panel builder, that means the breaker is a clean overcurrent-only device; any remote trip or status feedback requires adding that shunt trip and wiring it into a safety or PLC circuit.
Above that, it derates: 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, and 22.5 A at 70 °C. The breaker measures 70 mm deep by 76.2 mm wide by 130 mm high, with IP40 protection on the front face.