The Siemens 3RV2411-1HA10 is a SIRIUS-branded circuit breaker specifically designed for transformer protection.
Breaking capacity and fuse coordination
Rated breaking capacity hits 100 kA at 240 V and 400 V, dropping to 42 kA at 500 V and 4 kA at 690 V. For installations that need higher interrupting capacity at 690 V, the breaker coordinates with upstream gL/gG fuses: 50 A max at 400 V, 40 A at 500 V, 35 A at 690 V. That fuse backup lets you use this breaker in high-fault panels without upsizing the entire feeder.
