The thermal-magnetic curve gives L (thermal overload) and I (magnetic short-circuit) protection — no electronic adjustment, no earth-leakage module, just a reliable bimetal-and-solenoid pair. The 50,000-cycle mechanical durability and 50,000-cycle electrical durability at 440 V In/2 tell you this breaker is built for a panel that cycles, not just a disconnect that sits closed. The IP40 front face keeps tools and fingers out; the IK07 impact rating handles a 2 J hammer blow — enough for a panel door that gets bumped during maintenance.
Integration notes
Mounts flat on a backplate — no DIN-rail adapter needed for this frame. The 140 mm width and 161 mm height fit the standard NSX100F cutout. Front connections top and bottom simplify busbar or cable landing. Neutral is on the left; the toggle control is manual only — no motor operator or rotary handle in this variant.
Altitude and environment
Above that, up to 5000 m, you'll need to derate — the thinner air reduces the arc-quenching efficiency. The 0–95 % relative humidity range covers everything from a dry control room to a humid coastal plant without condensation protection.