Overvoltage category 3 and energy limiting class 3 mean it coordinates with downstream wiring and upstream protective devices in a typical TN or TT system. Neutral conductor switching is built in — the 2-pole design breaks both phase and neutral, which is required in some national wiring rules for final circuits and for isolating the load completely during maintenance.
Integration into the panel
The 55 mm installation depth keeps it flush with most consumer unit enclosures and shallow distribution boards.