Rated 63 A continuous at 40 °C, it carries a 3-pole construction and delivers a breaking capacity of 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream.
Ratings that matter for fit
The 63 A rating holds flat from 40 °C to 50 °C, then derates gradually: 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. Breaking capacity steps down with voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. Power loss is 19.8 W maximum at rated load — negligible for most enclosures, but worth checking if you're packing multiple breakers in a sealed box with limited ventilation.
The 3-pole width fits a standard 3-module slot in most panel layouts. Insulation voltage is rated at 800 V.