It's built for DC circuits in photovoltaic arrays and marine installations where a visible-break isolator isn't required but isolation per EN/IEC 60947-3 is.
The headline 630 A rating holds for both DC-22A (mixed resistive/inductive DC loads) and DC-PV2 (photovoltaic string) duty at 1500 V DC. That's not a resistive-only number — it's the switching current for real DC loads including motor circuits and solar arrays. The 1600 V DC rated insulation voltage gives headroom above the 1500 V operational voltage, important for fault conditions in ungrounded PV systems. Short-time withstand current is 7.56 kA for 1 second, and the short-circuit making capacity matches that figure on the switch-disconnector alone. That's the peak fault current the device can close into and hold — relevant for coordination studies where upstream protection must clear within that window. The IK07 impact rating and IP40 ingress protection suit indoor panel mounting; outdoor enclosures would need additional weatherproofing.
Fixed backplate mount with front-front connections — both line and load terminations are front-accessed, so it panels into a standard switchboard layout without rear access. Pole pitch is 45 mm, overall width 185 mm, height 255 mm, depth 110 mm. The toggle control and contact position indicator give a clear visual open/closed state for lockout-tagout procedures.
Rated for isolation (EN/IEC 60947-3), Class II shock protection, and carries the DC-22A / DC-PV2 utilisation categories that cover both general DC switching and photovoltaic-specific duty. The 3000-cycle electrical durability at rated 1500 V DC / 630 A and 8000-cycle mechanical durability give a reasonable maintenance interval for a switch-disconnector in a solar combiner or marine DC bus.