The Siemens SENTRON 3VA2163-6HN36-0KC0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. Its interrupting capacity reaches 242 kA at 240 V AC, dropping to 187 kA at 415/440 V, 121 kA at 500 V, and 3.7 kA at 690 V. The unit ships as a complete assembly including the basic switch 3VA2163-6HN36-0AA0, so no separate ordering of internal accessories is needed for standard line protection duty.
The 86 mm depth accounts for the breaker body plus the shunt trip and auxiliary switch stack; verify clearance behind the panel door for wiring and actuator access. Power loss is rated at 4 W maximum, so thermal rise inside a sealed enclosure is minimal — no forced cooling required for typical panel densities.