At 240 V this MCCB interrupts 242 kA — a figure that covers most utility transformer secondary faults without cascading upstream. At 415 V it still holds 187 kA, and at 690 V it drops to 3.7 kA, which is typical for a 100 A frame on a 690 V line. The high interrupting ratings at common low-voltage levels mean you can place this breaker close to the source in a high-fault-current panel and still maintain full selectivity with downstream 18 kA or 25 kA branch devices.
That 105 mm width fits a standard 3-pole MCCB cutout in a distribution panelboard or switchboard. An optional motor drive is available for remote switching — the frame is prepared for it.