At 240 V it interrupts 440 kA; at 415 V and 440 V it holds 330 kA; at 500 V it's 220 kA; at 690 V it drops to 52.5 kA. That's a high-interrupting-capacity (HIC) device — sized for main or large feeder duty where fault current is stiff. The 63 A continuous rating paired with that interrupt capacity means it's built for a high-fault point in the distribution tree, not a downstream subfeed.
The 3-pole block occupies three modular-width positions. The depth of 86 mm means it clears most standard enclosure back-panels without a sub-panel spacer.
Ground-fault monitoring variant
This variant includes a summation-current ground-fault monitoring function on the L-conductor. That means it can detect residual current by summing the phase currents through a single core-balance transformer — useful for equipment ground-fault protection without an external GFCI module.