63 A MCCB for line protection — thermal-magnetic TM240 release
The Siemens SENTRON 3VA1163-5EF32-0AE0 is a 3-pole molded case circuit breaker (MCCB) rated 63 A continuous at 40 °C through 50 °C, with a slight thermal derating curve down to 58 A at 70 °C.
This MCCB delivers 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
At 70 mm deep, 76.2 mm wide, and 130 mm tall, the 3VA1163-5EF32-0AE0 fits the standard SENTRON 3VA mounting footprint. The width of 76.2 mm (3 inches) matches the typical 3-pole MCCB slot in a distribution board — no adaptor plate needed for most Siemens panelboards. Depth of 70 mm leaves clearance for rear-connected busbars or cable exits.
Auxiliary switch configuration and power loss
Maximum power loss is 17.3 W at rated current, which matters for thermal management inside a sealed enclosure. The basic switch variant is 3VA11635EF320AA0.