For flexible, stranded and solid wires. Wire cross-section: 0,75-4,0 mm². Strain-relief for cables with outer diameter 6,5-13,5 mm. Weight: plug 19,1 g, socket 19,6 g. Coupler width: 39 mm. Other dimensions identical to respective versions with locking latches on the sides of the coupler. The separate locking device NK3F.W is delivered with the plug. Pole markings in parentheses.