It gives you 20 kA Icu at 440 V AC — that's the interrupting capacity at the panel's line voltage, so it clears a fault without the arc climbing upstream. The N breaking-capacity code means it's sized for commercial and light industrial distribution where fault currents stay under that threshold. Pollution degree 3 per IEC 60947 means it's fine in a standard panel environment — no extra conformal coating needed for the typical control-room or switchboard air.
Fixed backplate mount, front connection both top and bottom. It's 140 mm wide, 165 mm tall, and 68 mm deep — fits a standard distribution panel cutout without squeezing. IP20 finger-safe terminals, IK07 impact rating on the enclosure, so it handles a knock during panel assembly.
TM-D trip curve is the standard fixed-thermal, fixed-magnetic type — no interchangeable trip units, but it's a workhorse for feeder and branch circuits. Four poles protected (4t), but neutral protection is off by default — check your system grounding before wiring. Rated operational voltage is 440 V AC, insulation voltage the same. That covers 400 V class systems with margin. Mechanical durability is 10,000 cycles — fine for a distribution breaker that sees infrequent switching; not rated for motor-starting duty where you'd need a higher cycle count. Category A utilization means it's not intended for frequent on-load switching, just fault protection.