Insulating Support Insulator with Protective Shell OCK 4-20-A-2 for Electrical Equipment

They are intended for isolation and fastening of current-carrying parts in electrical apparatuses and in switchgear of power stations and substations of alternating current with voltage 20 kV with frequency up to 100 Hz at ambient air temperature from minus 60 º? to plus 50 º?.
Climatic execution and placement category UHL 1 according to GOST 15150.