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72.5KV 4000A Horizontal or Vertical knee-type disconnector

72.5KV 4000A Horizontal or Vertical knee-type disconnector

72.5KV 4000A Horizontal or Vertical knee-type disconnector features a compact design, modern aesthetic, and sleek appearance. It is reliable, efficient, and economical, with a space-saving vertical contact system that adapts to varying heights. The terminal block and conductive rod are crafted from high-quality aluminum alloy and aluminum alloy sections, offering excellent strength, durability, and resistance to corrosion.


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Product Details


circuit breaker


About us

Kesion Electric Technology Co., Ltd. is a leading company situated in Shenzhen, a vibrant city epitomizing China's reform and open-door policy. Since our establishment in 2016, we have operated from an expansive 11,000-square-meter facility, achieving an annual output value exceeding 90 million yuan. Our workforce of over 100 employees, including 30 skilled engineers and technical experts, enables us to produce more than 3,600 sets of medium-voltage switchgear per year. Throughout the years, our unwavering commitment to developing a comprehensive range of products has set us apart. Our offerings encompass 35kv gas-insulated switchgear (C-GIS and GIS) with current ratings from 630A to 3150A, in addition to circuit breakers, disconnectors, isolating mechanisms, modular controllers, enclosure sheet metal, and busbar systems.

Moreover, we specialize in 35kV substations, 110kV GIS, 35kV Cable Branch cabinets, 35kV transformers, and 35kV prefabricated substations. Our lineup also features fully insulated and fully enclosed permanent magnet ring main units (research and development products) and environmentally friendly gas ring main units. As a result, all our products are designed, developed, manufactured, marketed, and supported by a reputable power equipment manufacturer. Our company has established a robust management system in accordance with the GB/T standard for performance, company management, and safety production. Safety remains our top priority, and we take pride in housing a technology research and development center with exceptional technical capabilities. Embracing lean production and the fusion of informatization and industrialization, we have developed an advanced production manufacturing system. Our comprehensive range of production and testing equipment includes CNC punching machines, laser cutting machines, robotic welding, automated assembly lines, power frequency withstand voltage devices, shielding partial discharge devices, and vacuum box-type helium leak detection systems. Thanks to our dedication to quality, our products hold numerous domestic and international certifications and are renowned for their excellence and services worldwide. This has solidified our position as a key strategic partner for numerous reputable manufacturers. With a dedicated technical team and attentive marketing services, we steadfastly uphold the principles of "leading with technology, quick response, and safe electricity use." Our unwavering commitment to cutting-edge technology, competitive pricing, and sincere pre-sales and after-sales services have earned us the trust and admiration of our customers.


The GW17 isolating switch has the properties of compact structure, advanced, clean appearance, beauty, Reliable property, and economical. After tripping, the vertical contact doesn't take up space, especially adapt to the site where the entering line and exit line are vertically different heights. Terminal block and conductive rod are made by casting aluminum alloy and aluminum alloy section, having the advantage of high-intensity, good flowing, and good anti-corrosion. Adapt to the site's different laying way: One Line laying, 45 ° Laying, 135 ° Laying, and so on. In the galvanic circle, the section is the combination structure made by screw fix linking, having the good property of stable flowing, high reliability, simple change way, and convenient adding volume way. In the galvanic circle, the contact and finger are made by a T2Y pure copper tap whose connecting part is coated by 30μ M silver. The finger stainless steel makes a finger spring, and its design is the inside hiding and outside press structure, which is convenient for testing and changing. All the operating rods and linking rods are supplied by the manufacturer, which is convenient for loading, adjusting, and testing. It can be supplied as a whole above the ground according to the user's requirement..

Service and Installation Conditions

1. The altitude does not exceed 1000m;

2.The ambient air temperature:Maximum +40℃;Minimum:General Area -30℃,Paramos -40℃;

3. The wind pressure does not exceed 700Pa. (corresponding to 34m/s wind speed);

4. The earthquake intensity does not exceed 8 degrees;

5. The working situation is without frequent violent vibration;

6. The installation site of an ordinary type isolator should be kept away  from  gas, smoke  chemical  deposition, salt-spray  fog, dust

and other explosive and corrosive matters that seriously affect the insulation and conduction capability of the isolator.

7. Pollution-proof type isolator is applied to severe filthy conduction areas. However,  there shouldn't be any explosive matters and matters causing a fire.

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