Rated 85 kA Icu at 500 V AC 50/60 Hz per IEC 60947-2, so it safely interrupts fault currents up to that level without welding or cascading failure upstream. That HB1 breaking capacity code (75 kA at 690 V) makes it a solid fit for high-fault panels where a standard 25 kA or 36 kA MCCB would need upstream fusing or a larger frame.
Three-pole (3P) construction, front-connect both sides. Rated for 20,000 mechanical cycles and 20,000 electrical cycles at 440 V In/2, 10,000 at 440 V In, and 5,000 at 690 V In — that covers years of regular switching on a motor or distribution feeder.
Sourcing reality
This is a standard catalogue item from Schneider's ComPacT NSX family — widely specified, broadly stocked in the channel. No second-source pin-compatible alternative exists in the same frame size — the MicroLogic 5.2 E trip unit and the HB1 breaking capacity are specific to this variant.
