The Siemens 3VA2125-7KP32-0AA0 is a SENTRON molded case circuit breaker designed for line protection, rated 25 A continuous current across the full -25 °C to 70 °C operating range with no derating needed up to 70 °C. The 3-pole frame delivers a 330 kA interrupting rating at 240 V, stepping down to 242 kA at 415/440 V and 187 kA at 500 V — enough headroom for most industrial main or feeder applications with high available fault current.
With no undervoltage release and no ground-fault monitoring version fitted, it's a straight line-protection device; add external modules if those functions are needed.
Rated insulation voltage: 800 V. Power loss max: 0.6 W. Storage temperature: -40 °C to 80 °C. Trip indicator: not fitted. Voltage trigger: not fitted. Communication function is built into the ETU850, enabling remote monitoring and parameterization via the SENTRON communication bus.