The Siemens 3VA2163-5HN36-0KC0 is a SENTRON 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 runs 187 kA at 240 V, 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 feeds without cascading upstream.
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA2 frame footprint. The 86 mm depth leaves room for rear-access cable connections in a typical 200 mm deep enclosure.