... -12(17.5/40.4) series outdoor ac high-voltage disconnecting switchAmbient condition:altitude: 1000-3000mambient temperature ... disconnecting switch meet GB1985-89<AC high-voltage disconnecting switch> IEC129(1984)<AC disconnecting switch earthed switch> and ... ground, double groundingGW1-12Item: rated voltage, rated current, rated peak withstand current, rated short-time withstand currentUnit: kv, A, Ka ...