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Audited Supplier GSC-12 medium voltage load switch had reinforced epoxy resin cast, which uses SF6 gas for insulation and also arc quenching medium.
Three position rotatable moving contacts for close, open and earthed operation.The insulation shell is its upper & lower 2 insulation cover pieced together. Inside there has relative pressure 0.4bars SF6 gas. Its lower insulation cover takes some anti-explosion thicker filmmeasures to avoid the high pressure gas release explosion in case of failure to prevent the operator and other parts.
The resin cast has anti-explosion pressure relief value fitted at back for ensuring safety of operators
GSC-12 has single K-type spring mechanisms, normally used for incoming and outgoing line.
GSC-12 has double A-type spring mechanisms, normally used together with fuse for transformer protection.
Build-in capacitive sensors
Optional motor operation
Operation GAS pressure meter or testing points
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Audited Supplier 
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