The Siemens SENTRON 3VA1163-5ED32-0CA0 is a 3-pole molded case circuit breaker rated for continuous current of 63 A at 40 °C, with a thermal-magnetic TM210 trip unit designed for line protection. Its interrupting capacity hits 187 kA at 240 V, tapering to 121 kA at 415 V and 75.6 kA at 440 V — numbers that tell you this breaker is built for high-fault panels where SCCR headroom matters. An integrated undervoltage release (UVR) is included, which means the breaker can be tripped remotely by dropping the control voltage — common in emergency-stop or safety interlock circuits.
Thermal derating and power dissipation in the panel
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. If your enclosure ambient runs above 50 °C, you lose about 1 A per 5 °C rise. Maximum power loss is 19.8 W — modest for a 63 A frame, but worth checking against your panel's thermal budget if you're stacking multiple breakers in a sealed box. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep, which is the standard 3VA1 frame footprint; it clips onto a DIN rail or mounts via the screw terminals.
What the UVR adds to the circuit
This is standard for applications where you want the breaker to open on loss of control power — think safety circuits, emergency-off chains, or interlocked machine zones.