For flexible, stranded and solid wire. Wire cross-section: 0,75-4,0 mm². Strain-relief for cables with outer diameter of 5,5-12,0 mm. Weight: plug 15,6 g, socket 16,1 g. Coupler width: 28 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.