GW4A-40.5 series high-voltage isolating switchDetailed product description：

GW4A-0.5 series high-voltage isolation switch structure

The complete set of isolation switch consists of GW4A-40.5 (D) (W) type isolation switch body, CS14G type manual operating mechanism, transmission accessories, etc. It can also be equipped with CJ6 type and other electric mechanisms.
The isolation switch adopts a double column center opening and contact turning structure, which has the ability of self-cleaning contacts and improves contact reliability.
The conductive circuit uses rectangular copper pipes, which increase the heat dissipation area by 40% compared to the original circular pipes, greatly reducing the temperature rise of the main electrical part.
The touch finger is made of a new type of material with high strength, high conductivity, and high elasticity. By relying on the elastic force of the contact finger itself to clamp the contact, the vicious cycle of reduced clamping force, increased contact resistance, and intensified contact heating caused by spring corrosion and thermal annealing is avoided. And the contact finger and the contact finger seat are fixed by bolts, which avoids the possibility of oil and dust entering their contact points and increasing the contact resistance. This conductive part structure has obtained a national utility model patent.
The rotating part of the isolation switch is designed to be maintenance free. The rotating seat is designed with a sealed structure, which prevents water vapor, dust, and harmful gases from entering. This ensures that the bearings and molybdenum disulfide lithium based grease always work in a good environment, the bearings never rust, the grease cannot be lost, and it never dries. This prevents the operating torque of the isolation switch from increasing after long-term operation. Adopting a structure that combines stainless steel shaft pins with oil-free self-lubricating shaft supports; The steel components are hot-dip galvanized to ensure flexible, lightweight, reliable, and rust free operation of the isolation switch.
The foot installation size of GW4A-0.5 grounding switch is exactly the same as that of GW4-40.5 isolating switch, and can directly replace GW4-40.5 isolating switch.  

Main technical parameters of GW4A-10.5 series high-voltage isolating switch

model	rated voltage kV	rated current A	main circuit resistance μΩ	Rated short-time tolerance Current kA/S		Rated peak endurance Current kA		One minute power frequency Withstand voltage kV		lightning surge Voltage withstand kV
				Main electrical circuit	grounding switch	Main electrical circuit	grounding switch	to the ground	fracture	to the ground	fracture
GW4A－40.5(D)（W）/630	forty point five	six hundred and thirty	one hundred and seventy	20/4	20/3	fifty	fifty	ninety-five	one hundred and eighteen	one hundred and eighty-five	two hundred and fifteen
GW4A－40.5(D)（W）/1250		one thousand two hundred and fifty	one hundred	31.5/4	31.5/3	eighty	eighty
GW4A－40.5(D)（W）/1600		one thousand and six hundred	eighty	40/4	40/3	one hundred	one hundred
GW4A－40.5(D)（W）/2000		two thousand	seventy	40/4	40/3	one hundred	one hundred