Multiple screw connection Pg21 - made of metal - consisting of rubber seal with several holes (4 x 8 mm) and a pressure screw - for cable screw connection support VC-M-KV-PG21...
Half screw connection Pg21 - made of plastic - consisting of rubber seal with several holes (4 x 8 mm) and one pressure screw - for type 2 - 4 housings