GW4-12/40.5 outdoor high voltage disconnect switch is used to open and close high voltage circuit in rated voltage 12/40.5kV, AC 50/60Hz system, the anti-pollution type is especial suitable for serious pollution area.
1. Altitude:≤3000m;
2. Ambient temperature:-25~+40℃ ;
3. Wind speed:≤35m/s;
4. Earthquake intensity:≤8 grade;
5. Ice thickness:≤10mm;
6. Anti-pollution type is special suitable for serious pollution area;
7.Applicable occasions should free from inflammable, explosives and severe vibration.

Item Unit Data Note Rated voltage kV 12/40.5 Rated current A 630 1250 Rated peak withstand current kA 50 80 4s short-time withstand current 20 31.5 Rated static pull on connection terminal N 735 Rated power frequency Hz 50/60 1min power frequency withstand voltage kV Phase to phase, phase to earth: 185/275 Suitable for three pole linkage across open contacts: 210/315 Lightning impulse withstand voltage(peak) kV Phase to phase, phase to earth: 450/650 across open contacts: 520/750 Suitable for three pole linkage Weight of switchbody kg ≈240 Operating mechanism CS14 manual Earth method Without earth, single earth, double earth Post insulate creepage distance mm Normal type: 1870 anti-pollution: 3050 With earth switch Short-time withstand current kA 12.5(2s) 20(2s) Peakwithstand current 31.5 50

Disconnect switch is contain of frame, post insulator, conductive part, with earth and operating mechanism etc, earth blade is mounted with rotating shaft, static contactor is mounted on the bar, there is a mechanism linkage to ensure operating ordinally, one set Cs14 handle operating mechanical for no earth switch, two sets for singte earth switch, three sets for double earth switch.