Rated 85 kA Icu at 500 V AC 50/60 Hz, with 80 kA at 525 V and 75 kA at 690 V. That 85 kA interrupting rating at 500 V gives you serious fault-current headroom for industrial distribution — it clears high-energy arcs without cascading upstream, which matters when you're coordinating a main-tie-main lineup or feeding a high-fault panel.
That matters for motor-fed loads or pulsed processes. Four poles (4P) with neutral on the left, front-front connection, 35 mm connection pitch. IP40 enclosure protection, IK07 impact rating. Pollution degree 3 (conductive pollution expected, typical for industrial panels). Overvoltage category III, utilisation category A (not intended for frequent switching under load). Mechanical durability 20,000 cycles; electrical durability 20,000 cycles at 440 V In/2, 10,000 at 440 V In, 10,000 at 690 V In/2, 5,000 at 690 V In. For a distribution breaker that's not cycled daily, that's a long service life — but if your application requires frequent load-break switching, you'd want a contactor or a utilisation-category B MCCB.
No earth-leakage protection built in (Vigi add-on available separately if needed). The breaker has five accessory slots for shunt trips, auxiliary contacts, or under-voltage releases — standard ComPacT NSX ecosystem, so spares and add-ons are common.
Deployment context
Front-front connection means both line and load terminations are accessible from the front, simplifying bus-bar routing and cable dressing.