It's built for distribution panels where you need a fixed, non-communicating MCCB that clears faults fast: 75.6 kA at 240 V, 52.5 kA at 415 V, and still 11.9 kA at 690 V. The 80 A rating holds steady from 40 °C up to 50 °C, then derates to 74 A at 70 °C — so if your panel runs hot, you still have margin. No trip indicator, no voltage trigger, no ground-fault monitoring — this is a straight-ahead thermal-magnetic breaker for main or feeder protection.
Sizing and thermal reality
The 80 A continuous current (Iu) is what you spec against. At 55 °C it's 78 A; at 60 °C it's 77 A; at 65 °C it's 75 A; at 70 °C it's 74 A. No adjustment range, no electronic trip — set it and forget it.
Panel fit and environment
Four-pole footprint — it takes up the same width as a standard 4-pole MCCB on the DIN rail or mounting plate. Power loss maxes at 19.2 W — factor that into your enclosure thermal calc if you're stacking several breakers side by side.