The Siemens 3VA2010-5HN36-0BA0 is a SENTRON molded case circuit breaker (MCCB) sized for a 1 200 A frame but fitted with a 100 A continuous-current rating — so it gives you the mechanical and interrupting muscle of a large frame while protecting a 100 A feeder. Interrupting capacity is where this frame earns its keep: 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.
It bolts into a switchboard or distribution panel on a mounting plate, not a DIN rail.
