The 50 kA interrupting capacity at 690 V AC gives serious fault-clearing headroom in industrial distribution panels where high available fault current is a given.
Snaps onto standard DIN rail — straightforward panel integration. The 3-pole format handles three-phase circuits up to 230 V AC line-to-neutral or 400 V line-to-line (the 690 V interrupting rating covers the higher voltage). In a typical sub-distribution board or machine control panel, this breaker sits upstream of contactors and drives, providing branch-circuit protection with the selectivity that the S800S series is known for.