The Siemens 3VA1163-6EF32-0KA0 is a SENTRON molded case circuit breaker (MCCB) with 3 poles, rated 63 A continuous at 40 °C, and a TM240 thermal-magnetic overcurrent release. Its interrupting capacity hits 220 kA at 240 VAC, 154 kA at 415 V, and 121 kA at 440 V — numbers that put it in the high-fault-current class for main or feeder protection in industrial switchgear. The shunt trip (STL) auxiliary release allows remote tripping, so this breaker fits into a coordinated protection scheme where you need to kill power from a PLC or E-stop circuit.
What the ratings mean for fit
The 63 A rating holds flat from 40 °C to 50 °C, then derates to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. That means in a warm panel — say 55 °C ambient — you still get 62 A continuous, so a 60 A load is fine without upsizing the frame. The 220 kA at 240 V is the headline number for North American 240/480 V distribution; at 415 V it still delivers 154 kA, enough for most European industrial mains. Rated insulation voltage is 800 V, so it's comfortable on 690 V systems where the 17 kA rating applies.
Panel integration
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a 3-pole frame that fits standard Siemens 3VA mounting plates and busbar systems. The shunt trip (STL) is factory-installed, so no field wiring of an add-on module is needed. Max power loss is 17.3 W, which matters for thermal budgeting inside a sealed enclosure.