The Siemens SENTRON 3VA1163-3EF36-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with the same 63 A holding at 45 °C and 50 °C before thermal derating begins — at 55 °C it carries 60.48 A, at 60 °C it carries 59.22 A, at 65 °C it carries 57.96 A, and at 70 °C it carries 56.7 A. That derating curve means a panel builder can size the breaker for a full 63 A load only if the enclosure ambient stays at or below 50 °C; above that, the load must be trimmed per the published figures. Breaking capacity is specified at four voltage levels: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V.
The 76.2 mm width is a standard 3-pole MCCB footprint — it occupies three 25.4 mm module positions on a DIN rail or mounting plate. This is standard for indoor panel mounting; no washdown or outdoor rating is claimed. The trip alarm switch changes state only when the breaker trips on fault, not on manual open — useful for remote fault indication in a PLC input.
Rated insulation voltage Ui is 800 V, and the storage temperature range is -40 °C to 80 °C, while operating range is -25 °C to 70 °C.