What this 100 A MCCB does on the line
The Siemens 3VA2010-7KQ32-0AA0 is a SENTRON molded case circuit breaker rated for 100 A continuous current with no derating all the way up to 70 °C — that means you don't have to upsize the frame when the panel runs hot. It's a 3-pole unit built for line protection (cable, bus, feeder duty), not motor protection, so it's the right call for distribution panels and switchboards where you need selective coordination downstream. Breaking capacity is 330 kA at 240 V and still 242 kA at 415 V — that's serious fault-interruption muscle for a 100 A frame. At 690 V it drops to 3 kA, so if you're running a 690 V line you need to check the available fault current against that limit. The rated insulation voltage is 800 V, which covers most industrial distribution voltages. It carries a ground-fault monitoring function using summation current formation on the L-conductor, plus a communication function for integration into a higher-level monitoring system. Power loss is 7.7 W max at rated load — relevant if you're packing a dense panel and need to manage heat rise.
Panel fit and mounting
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a compact 3-pole MCCB footprint that fits standard distribution panelboards and switchgear cubicles. Mounts via the screw-on or plug-in base typical of the SENTRON 3VA2 family. No DIN-rail mounting on this frame; it bolts directly to the panel backplate or busbar system.