The SENTRON 3VA2063-5JQ32-0KC0 is a 3-pole molded case circuit breaker rated for 63 A continuous at 40 °C through 70 °C — no derating needed across that span. The adjustable thermal-magnetic trip unit covers 95 A minimum to 756 A maximum, which gives you a wide coordination window for feeder or main protection. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That's enough SCCR headroom for most industrial distribution panels without cascading upstream. The basic switch underneath is order code 3VA20635JQ320AA0.
The 86 mm depth leaves clearance for rear-access wiring and busbar connections in a typical 600 mm deep enclosure.