Core specs and sourcing
The 3RV2041-4MA10: Phase failure detection is built in; ground fault detection is not. Ambient temperature range during operation is -20 to +60 °C.
Panel fit and wiring
Mounts on 35 mm DIN rail per DIN EN 60715, screw and snap-on. Any mounting position. Dimensions: 70 mm wide, 165 mm high, 176 mm deep. Screw-type terminals for the main circuit: accepts 2x (2.5…16 mm²) solid or stranded, or 1x (10…70 mm²) solid/stranded. Minimum side clearance: 30 mm; vertical clearance: 150 mm above and below.
Why this part for your storeroom
This is a current-production, widely used SIRIUS breaker — a critical spare for any panel with 3RV2-series motor starters. The 100 A rating and high interrupting capacity cover most medium-motor branch circuits. It's a fast mover, so keep one on the shelf for line-down situations.