This MCCB delivers 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — figures that place it in the high-interrupting category for large industrial services or transformer secondaries. At 500 V and 690 V the rating drops to 17 kA, which still covers most motor-circuit fault levels on 480 V and 600 V class systems.
Thermal derating curve
The 63 A rating holds flat from 40 °C through 50 °C, then tapers to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. That means in a tightly packed panel with ambient near 60 °C you lose about 3% of headroom — not enough to force a frame upsizing for most loads, but worth checking if the circuit is already loaded to 60 A continuous.
Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — a standard 4-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling.