The 3VA2225-5HL42-0KH0: The 250 A continuous rating holds at 40, 45, and 50 °C ambient — no derating needed up to that point. At 55 °C it derates to 241 A, at 60 °C to 232 A, at 65 °C to 222 A, and at 70 °C to 213 A.
Integration into the Panel
The breaker measures 181 mm high by 140 mm wide by 86 mm deep — that's 7.13 by 5.51 by 3.39 inches. It's a SENTRON 3VA frame, designed for DIN-rail or screw-mount installation in standard distribution panels. The shunt trip (STL) allows remote tripping from an emergency-stop circuit or a PLC digital output — useful for safety disconnects or automated shutdown sequences.
