The Siemens 3VA1163-6EF36-0AB0 is a SENTRON 3VA1 molded case circuit breaker (MCCB) rated for line protection. It carries a continuous current of 63 A at 40 °C ambient, with the TM240 thermal-magnetic release handling overload and short-circuit protection in a single device. The 3-pole frame breaks up to 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — enough to clear high-fault utility feeds or transformer secondaries without cascading upstream. Rated insulation voltage is 800 V.
Compared to the 3VA1110-5ED36-0AC0, this 3VA1163-6EF36-0AB0 carries a higher continuous rating (63 A vs the 3VA1110's lower frame) and a different release curve (TM240 vs the 3VA1110's release). The physical footprint — 76.2 mm wide, 130 mm tall, 70 mm deep — is the same 3VA1 frame size, so it drops into the same DIN-rail or screw-mount panel cutout without rewiring.
Mounts on DIN rail or directly to a backplate via the 3VA1 frame's screw holes. The 70 mm depth leaves clearance behind a standard 100 mm deep enclosure door. Power loss at rated load is 17.3 W — factor that into enclosure thermal calculations if the panel is densely packed.