The Siemens SIRIUS 3RV2411-4AA10 is a circuit breaker specifically designed for transformer protection — that means its trip curve and thermal-magnetic characteristics are tuned to handle the inrush and overload profile of a transformer primary, not a motor or a resistive load.
The 45 mm width and 97 mm depth match the standard SIRIUS 3RV2/3RV4 footprint — it drops into the same panel cutout and rail slot as the 3RV2023-4DA10 without rewiring. Any mounting position is allowed, and the screw-type terminals accept 2× (0.75 to 2.5 mm²) solid or stranded, or 2× 4 mm², so existing ring lugs or ferrules transfer straight over.
The interrupting rating drops as line voltage rises: 100 kA at 240 V, 30 kA at 400 V, 5 kA at 500 V, and 2 kA at 690 V.
