The Siemens 3VA1163-6EF36-0AA0 is a SENTRON 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with the TM240 thermal-magnetic overcurrent release. The TM240 designation means the thermal trip is fixed at 240 A — this breaker is sized for line protection of a 63 A feeder, not for motor or generator protection.
Breaking capacity varies significantly with system voltage: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The 3VA1 frame carries these ratings without an external shunt trip or undervoltage release.
The 76.2 mm width is a standard 3-inch footprint for a 3-pole MCCB in this class — it fits the same DIN-rail or panel-mount cutout as other 3VA1 frame breakers. No communication module or ground-fault monitoring is integrated; the design is a straightforward line-protection device with the TM240 release.
Temperature derating above 55 °C
At 55 °C it derates to 62 A, at 60 °C to 61 A, at 65 °C to 60 A, and at 70 °C to 58 A.