Adjustable trip unit covers 945 A to 5,670 A. Breaking capacity is 242 kA at 240 V AC and 187 kA at 415/440 V, dropping to 121 kA at 500 V and 9 kA at 690 V — figures that define the maximum fault current the breaker can safely interrupt at the point of installation.
At 50 °C it derates to 570 A, at 60 °C to 510 A, and at 70 °C to 450 A — a 28 % drop from the base figure. Panel builders should place this breaker where internal cabinet heat rise is accounted for in the continuous current budget. Maximum power loss is 162 W, a figure worth noting for enclosure thermal calculations when multiple breakers are ganged in a single cabinet.
