The Siemens SENTRON 3VA2063-6HN32-0HL0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the entire 40 °C to 70 °C operating range — no derating needed up to that ambient ceiling. Interrupting capacity hits 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V.
Power loss is 5.4 W maximum, so thermal rise in a tightly packed cabinet stays manageable without forced ventilation. That gives you separate dry contacts for remote status — trip indication, breaker position, and a dedicated alarm on fault. The shunt trip (STL) release is built in, so you can remotely trip the breaker from a safety PLC or E-stop circuit.
Storage and handling limits
The 63 A rating holds steady across the full operating band — no derating curve to track between 40 °C and 70 °C.