What this SIRIUS circuit breaker is and where it fits
The Siemens 3RV2411-1JA20-0DA0 is a SIRIUS circuit breaker sized S00, designed specifically for transformer protection — not general motor or feeder duty. It mounts on 35 mm DIN rail per DIN EN 60715 via screw or snap-on, with any mounting position allowed. The 45 mm width and 97 mm depth fit standard panel layouts; no extra forward clearance is needed (0 mm forwards). Class 10 trip characteristic means it handles transformer inrush without nuisance tripping, while still clearing faults fast enough to protect downstream wiring. Rated breaking capacity hits 100 kA at 400 V AC — enough for high-fault panels without cascading upstream breakers.
Key ratings and what they mean for fit
This breaker is rated for transformer primary protection. At 230 V it handles 2.2 kW motor load equivalent; the gG fuse backup ratings at 400 V (50 A), 500 V (40 A), and 690 V (40 A) define the maximum upstream fuse for coordination. The spring-loaded terminals accept 2x 0.5–4 mm² solid or stranded — no lug crimping needed, which speeds panel wiring. Breaking capacity varies by voltage: 100 kA at 240 V and 400 V AC, 42 kA at 500 V, and 6 kA at 690 V AC. For 690 V applications, verify the available fault current stays under 6 kA — otherwise step up to a higher-rated frame. No ground-fault or phase-failure detection built in; this is a straightforward thermal-magnetic design.
Panel integration notes
Snap-on or screw-fixed to 35 mm DIN rail. Clearance requirements: 50 mm above and below, 30 mm to the side, zero forward and backward — tight panel layouts are fine. Operating temperature range -20 to +60 °C; storage and transport -50 to +80 °C. Screwdriver shaft 3 mm diameter, tip 3.0 x 0.5 mm for the spring-loaded terminals.