The 30 mA earth-leakage sensitivity covers personnel protection per AS/NZS 61009.1. Limitation class 3 (energy-limiting) means it clears a fault fast enough to restrict let-through energy, which helps with downstream device coordination and reduces arc-flash risk on the panel side.
Clip-on mounting to a 45 mm grid DIN rail, standard for European-style distribution boards. Occupies 6 x 9 mm pitches (54 mm wide), 112 mm tall, 77.2 mm deep — fits a standard 4-module slot in a residential or light-commercial consumer unit. IP20 rated, so it belongs inside a closed enclosure, not in a washdown area. Padlockable with a 4 mm hasp for lockout/tagout. ON/OFF indicator on the toggle gives a visible state check without opening the cover. Tropicalisation class 2 means it's treated for damp-heat environments up to 95% RH at 55 °C — relevant for coastal or unconditioned plant rooms.