The WDU 4N is a 2-position 1-level feed-through Terminal Block with Wemid construction and dark beige color. Screw connection for screwable cross-connection, on-end without connector, TS35 mounting rail, snap-on type mounting. Right open side, 6mm2 conductor cross-section, on-side connection direction, M3 clamping screw, A4 gauge and 26 to 10AWG wire size.