At 18 mm wide (one modular width), it snaps onto DIN rail and leaves the adjacent slots free for other breakers or accessories. The quick-assembly fastening method and combined top/bottom terminals mean you land the conductors without hunting for the right side — saves a few minutes per panel when you're wiring twenty of these.
It carries dual certification to IEC/EN 60898-2 and UL1077, so it's accepted in both IEC and North American panel builds where UL 1077 supplementary protection is recognized. Halogen-free and silicon-free construction matter for installations in clean rooms or areas with sensitive electronics.
Environmental limits and mounting
Rated for ambient temperatures from -40 °C to 75 °C, with humidity derating above 55 °C (95% RH to 55 °C, 55% to 70 °C, 35% to 75 °C). That covers outdoor enclosures in cold climates and warm electrical rooms without forced cooling. Mounts in any orientation — no derating required for horizontal or inverted positions. The 70 mm installation depth (76 mm overall) is standard for DIN-rail enclosures; verify your enclosure's internal depth if using a shallow gland plate.
DC capability and polarity
Rated for DC operation up to 220 V (250 V max) with 10 kA per EN 60898-2 and 15 kA per IEC 60947-2. The spec notes that DC polarity must be observed — the supply cord position matters for DC, while AC can be fed from either side. This matters if you're using it in a DC combiner or battery circuit where the wrong polarity could reduce arc-quenching effectiveness.