The Siemens 3RV2411-4AA15 is a SIRIUS-branded circuit breaker specifically designed for transformer protection. Rated for continuous currents of 16 A at both 480 V and 600 V, this breaker handles the inrush of small to medium transformers without nuisance tripping. Breaking capacity is the key selection parameter here: 100 kA at 240 V, 30 kA at 400 V, 5 kA at 500 V, and 2 kA at 690 V. At 400 V — the most common industrial distribution voltage — the 30 kA SCCR gives you headroom for high-fault panels without cascading upstream breakers.
Mounting position is any orientation, so it works in tight vertical or horizontal panel layouts. Screw terminals accept 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²) solid or stranded copper — no special lugs needed. Forced-air cooling clearance: 50 mm above and below, 30 mm to the sides, 0 mm front and back. That keeps the thermal trip within its -20 to +60 °C operating range.