Allows completely safe feeding, without tapping in, of protected single-block surge protector, Legrand top-entry / top-exit head-of-row differential switches and circuit breakers, 25, 40 and 63 A single-phase. Ideal for housing and small commercial applications, 3 - 12 kVA. For DRIVIA 13 & 18 and 150 mm Plexo3 XL3 enclosures.