The Siemens SENTRON 3VA2063-5JQ32-0AH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous at 40 °C, with a thermal-magnetic trip adjustable from 95 A minimum to 756 A maximum — that full-scale range means this frame can be tuned to protect a 63 A feeder or bumped up for a 756 A downstream bus if the application allows. Breaking capacity sits at 187 kA at 240 V AC, drops to 121 kA at 415/440 V, and holds 75.6 kA at 500 V — at 690 V it's still rated 3 kA, so this breaker handles high-fault commercial and industrial distribution panels without cascading upstream.
Dimensions are 181 mm high, 105 mm wide, 86 mm deep (3.39 in).
The base switch variant is 3VA20635JQ320AA0 — that's the core breaker without the auxiliary switch kit; the -0AH0 suffix adds the HQ auxiliary switch configuration pre-installed from the factory, so it's a drop-in for designs that already call for two aux contacts plus a trip alarm.