It's rated to interrupt 25 kA at 400 V AC per IEC 60947-2 and 5 kA per UL 1077 — dual-rated, so it can be specified for panels built to either standard. The 54 mm width (3 modular units) and 76 mm depth fit standard DIN-rail enclosures without crowding adjacent devices.
Breaking capacity and what it means for your panel
That's typical for a main or feeder breaker in a distribution board. The 5 kA UL 1077 rating is lower because UL 1077 is a supplementary protector standard, not a branch-circuit OCPD; in North American practice, this part is used as a supplementary protector downstream of a branch-circuit fuse or breaker. The 15 kA DC rating at 60 V DC (IEC 60947-2) covers DC bus or battery circuits — useful if you're feeding a DC drive link or control power supply.
Mounting and environmental considerations
Operating range is -40 °C to 75 °C, with humidity derating above 55 °C (95% RH at 55 °C, 55% at 70 °C, 35% at 75 °C). The sealable option (padlockable toggle) is useful for lockout/tagout on a panel door.
Compliance documentation
Rated to IEC / EN 60947-2 and UL 1077. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.