The Siemens SENTRON 3VA1163-3EF32-0JH0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 63 A at 40 °C, with a rated insulation voltage Ui of 800 V. The interrupting ratings climb to 75.6 kA at 240 V and 52.5 kA at 415 V, which gives selectivity headroom in a main or subfeed position.
Thermal derating and ambient limits
Above that the thermal curve steps down: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C.
The front face carries an IP40 protection rating — suitable for dry indoor enclosures, not washdown areas. The auxiliary contact block (2 form C aux + 1 alarm) is integrated; the shunt trip coil terminals are accessible on the side. The integrated auxiliary trip order code is 3VA9688-0BL32.