Its interrupting capacity reaches 187 kA at 240 V AC, 121 kA at 415/440 V, and 75.6 kA at 500 V — figures that define its fault-clearing capability for high-fault industrial feeds.
That means the breaker delivers its full continuous current in a warm enclosure without a size-up. The 187 kA at 240 V is the short-circuit current rating (SCCR) the breaker can safely interrupt; at 690 V the capacity drops to 3.7 kA, so verify the available fault current at the installation point if running higher line voltages. Insulation voltage rated 800 V gives headroom for 480/600 V systems.
Integration notes
The supplied basic switch (order code 3VA21105HN360AA0) and two auxiliary switches (HP type) are factory-fitted — no field assembly of the aux contact block.