The adjustable thermal-magnetic trip unit covers 150 A to 1 200 A, so you set the actual protection threshold to match the downstream load, not the breaker frame.
This 3-pole MCCB delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. At 415/440 V the 121 kA rating covers most industrial distribution bus faults. The drop to 3.7 kA at 690 V means this frame is not intended for 690 V main feeders; it's sized for the 240-500 V range where the interrupting capacity is substantial.
Built-in undervoltage release
Power loss at maximum is 12.5 W, which is modest for a 100 A frame and won't drive significant heat buildup in a well-ventilated panel.
