AC operating voltage is rated 690 V, DC 500 V; insulation voltage is 800 V. It mounts via busbar connection with front terminals, typical for panel feed or load-isolation duty where you need a visible break and lockout capability.
IP40 on the front keeps dust out of the terminal area; the rest of the body is enclosed by the panel. Three built-in HQ auxiliary switches (3 CO contacts) give feedback for status indication or interlocking without needing an add-on block. Mechanical service life is rated 15 000 operating cycles — typical for a disconnect that sees daily switching but not continuous motor starting.