The Siemens SENTRON 3VA2163-5JQ32-0HA0 is a 3-pole molded case circuit breaker rated for 63 A continuous at 40 °C through 70 °C — no derating needed across that band, which simplifies panel design in warm enclosures.
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA frame that drops into the same DIN-rail or screw-mount footprint as other 3VA3 breakers. The 3-pole block occupies three modular 18 mm units on the rail. Maximum power loss is 4 W, so heat buildup in a sealed panel is minimal.
What the interrupting ratings mean for your fault level
At 500 V the rating is 75.6 kA; at 690 V it is 3.7 kA.
