It carries a 187 kA breaking capacity at 240 VAC, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — so on a 480 V system you have over 75 kA of fault-interruption headroom, which covers most industrial service-entrance and feeder applications without needing a current-limiting fuse upstream.
The 4-pole construction lets you switch all three phases plus neutral, or use the fourth pole as a switched neutral in TN-S systems. The 86 mm depth means it fits in shallow enclosures where taller breakers would hit the door. Power loss is 25.5 W maximum at rated current — useful for calculating heat rise in a sealed enclosure. The ground-fault monitoring version uses summation current formation on L + N conductor, which detects leakage without a separate GFCI module.