What this MCCB carries
The Siemens 3VA2163-7HN32-0JA0 is a SENTRON 3-pole molded case circuit breaker rated for 63 A continuous at 40 °C — flat across the full ambient range up to 70 °C, so no derating headache in a hot panel. It's built for line protection and comes fitted with a shunt trip release (STL) for remote emergency-off or supervisory tripping.
Breaking capacity — what those numbers mean for coordination
This MCCB delivers 330 kA at 240 V and 242 kA at 415 V — that's the interrupting capacity you need for high-fault industrial panels where the upstream transformer can dump serious current. At 690 V it still holds 3.7 kA, which covers most 690 V motor circuits. The 63 A frame with these interrupting ratings means you can use it as a main or branch breaker in a panel with high available fault current without cascading coordination issues upstream.
Panel fit — dimensions
Footprint is 105 mm wide by 181 mm tall by 86 mm deep — standard 3-pole MCCB envelope for a 63 A frame. Mounts on DIN rail or panel-mount via the screw-on lugs. The 86 mm depth leaves clearance for rear-access wiring in a 200 mm deep enclosure.