Insulating device for high-voltage switchgear

The utility model relates to an insulating device for high-voltage switchgear, which mainly comprises a plurality of fixed contacts, a plurality of connecting wires, a plurality of buses and a plurality of arrestors, wherein one end of the bus is connected with the fixed contact while the other end is connected with the arrestor through the connecting wire, a phase is formed by a fixed contact, a connecting wire, a bus and an arrestor; a SMC (sheet molding compound) insulating plate is arranged between two adjacent arrestors, and another SMC insulating plate is further arranged between the arrestor and the switchgear. Since the SMC insulating plates are respectively arranged between the two adjacent arrestors and between the arrestor and the switchgear, the insulativity of the high-voltage switchgear is improved to meet the national safety standard so as to solve potential safety hazard.