The Siemens SENTRON 3VA1125-5EF36-0HA0 is a 3-pole molded case circuit breaker rated 25 A at 40 °C, with a shunt trip release (STL) for remote tripping and a TM240 thermal-magnetic overcurrent release. The 187 kA interrupting rating at 240 V is the headline number for fault duty; at 415 V it still breaks 121 kA, and at 690 V it holds 17 kA, which covers most industrial service-entrance and sub-distribution applications where the available fault current is high.
At 55 °C it drops to 24 A, at 65 °C to 23 A, and at 70 °C it still carries 23 A. The maximum power loss is 8.5 W, which is modest for a 3-pole 25 A MCCB and won't drive extra ventilation in a typical distribution panel.
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — the 3-pole width matches the standard 3VA frame. The shunt trip release (STL) is factory-fitted; no field kit required.