It protects branch circuits against overload and short-circuit in 400 V AC networks, with a 25 kA breaking capacity certified to IEC 60947-2 — that figure governs its fault-interruption capability at the panel level, not just the domestic standard.
The 5 kA rating under UL 1077 / CSA C22.2 No. 235 covers North American supplementary protection applications. The C-curve releases between 5 and 10 times rated current (80–160 A for this 16 A unit), which is the standard choice for mixed resistive and motor loads in mechanical engineering and industry applications. The 10 000 mechanical operating cycles typical service life is adequate for branch protection where it trips infrequently.
Panel integration and environmental limits
Depth is 76 mm (installation depth 70 mm), width 36 mm (2 MW), height 90 mm — fits standard distribution boards and sub-panels. IP20 with connected conductors, so it belongs inside a closed enclosure, not in washdown zones. Ambient range is -40 °C to 75 °C, with humidity derating: max 95% RH at 55 °C, dropping to 35% at 75 °C. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz — adequate for machine-mounted panels.