For flexible, stranded and solid wires. Wire cross-section: 0,75-4,0 mm². Weight: plug 5,9 g, socket 6,3 g. Coupler width: 19 mm. Other dimensions identical to respective versions with locking latches on the sides of the couplers. Separate locking device NK2F.W is delivered with the plug. Pole markings in parentheses.