What this 800 A EasyPact NW breaker is for
It's a fixed-mount, 3-pole unit with a push-button control type, designed for vertical or horizontal rear connection at a 115 mm pitch without spreader. The H breaking capacity code means 66 kA Icu at 220...440 V AC 50/60 Hz and 50 kA Icu at 690 V AC 50/60 Hz — enough headroom for most low-voltage distribution faults without cascading upstream.
That's a strong selectivity story for a main or tie breaker in a distribution board. The rated short-time withstand current Icw is 65 kA for 1 s at 440 V, so it coordinates with downstream devices during a delayed trip. Rated insulation voltage Ui is 1000 V AC, and impulse withstand Uimp is 12 kV — both confirm the clearance and creepage distances for a 690 V system with pollution degree 4 (heavy industrial environment per IEC 60664-1).
Integration into a switchboard
Fixed-mount on a base plate, with rear vertical or horizontal connection at 115 mm pitch. The 422 mm width by 352 mm height by 297 mm depth footprint fits standard low-voltage switchgear cubicles. IP40 protection means it's suited for indoor panel installation — not washdown environments. Mechanical durability is 20,000 cycles with maintenance, 10,000 without; electrical durability is 6,000 cycles at 440 V AC, 4,000 at 690 V AC, both Category B without maintenance per IEC 60947-2.