The 560-K4CF is a white Porcelain Terminal Block barrier strip without groove, with wire clip C and spring washer for explosion-proof modular flat screw connectors. The Series 560 ceramic terminal blocks offer a variety of models for explosion-proof and high temperature applications. These terminals comprise of a glazed steatite mount and two riveted flat-type screw terminals secured to prevent them from twisting, similar to DIN 41000, with binding clip C or D and spring washers B DIN 127. The blocks may either be used rail mounted or independently. The base has a longitudinal slot at the bottom for non-twist securing on mounting rails 16mmx3mm (0.63"x0.12"). The surfaces next to the screw-fixing hole can be used for marking purposes.