The Siemens SENTRON 3VA2163-5KP32-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Breaking capacity hits 187 kA at 240 VAC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V, so it handles high-fault industrial services where the available short-circuit current is substantial.
The 63 A frame and 3-pole block leave room for side-mounted auxiliary blocks and the UVR coil without crowding adjacent breakers. Power loss is 6.5 W maximum, manageable in a closed enclosure with basic ventilation.