The interrupting capacity scales with system voltage: 187 kA at 240 VAC, 121 kA at 415/440 VAC, 75.6 kA at 500 VAC, and 52.5 kA at 690 VAC — so the same breaker covers 480 V and 600 V class panels without a frame-size jump. This is a line-protection design (not motor-protection), so it's intended for cable and busbar protection in distribution.
Above that it derates: 960 A at 55 °C, 940 A at 60 °C, 920 A at 65 °C, 900 A at 70 °C. Dimensions are 320 mm high × 210 mm wide × 120 mm deep — a standard 3-pole frame that fits most switchboard cubicles with a 210 mm wide mounting cutout.
