The Siemens 3RV2411-1GA15 is a SIRIUS-brand circuit breaker designed specifically for transformer protection — not a general-purpose motor protector.
The main contact terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire, sized for the transformer secondary leads.
Ratings in context
The interrupting capacity holds at 100 kA through 240 V, 400 V, and 500 V, then drops to 4 kA at 690 V — so for 480 V delta panels the full 100 kA is available. The auxiliary contact ratings (1 A at 24 V, 0.5 A at 120/125/230 V, 0.15 A at 60 V) are for the signal circuit; the main circuit uses gL/gG fuse coordination with values of 50 A at 400 V, 40 A at 500 V, and 35 A at 690 V.