A load break switch is a switching device positioned between a circuit breaker and an isolation switch. It is equipped with basic arc-extinguishing mechanisms, enabling it to interrupt normal load currents and certain levels of overload currents. However, it cannot handle short-circuit currents. The load break switch is capable of switching on and off load currents, excitation currents, charging currents, and capacitor bank currents under normal operating conditions.

Types of High Voltage Load Break Switches:

1. Vacuum High Voltage Load Break Switch
   • Utilizes a vacuum medium for arc extinction, offering a long electrical lifespan.
   • Typically more expensive, suitable for systems operating at 220 kV and below.
   • Examples: FZN25, FZN21, FZN64 series.
2. Oil-Immersed High Voltage Load Break Switch
   • Relies on the arc’s energy to decompose and vaporize surrounding oil, which cools and interrupts the arc.
3. Sulfur Hexafluoride (SF₆) High Voltage Load Break Switch
   • Uses SF₆ gas to extinguish the arc, enabling it to handle larger breaking currents and perform well in breaking capacitor currents.
   • Features a relatively complex structure, suitable for systems operating at 35 kV and above.
   • Example: FNL36 series.
4. Compressed High Voltage Load Break Switch
   • Employs the piston’s compressed air during the breaking process to blow out the arc.
   • Simple in structure, suitable for systems operating at 35 kV and below.
   • Example: FKN12 series.
5. Solid Gas-Generating High Voltage Load Break Switch
   • Uses the arc’s energy to generate gas from materials in the arc chamber, which extinguishes the arc.
   • Simple structure, suitable for systems operating at 35 kV and below.
   • Example: FN5 series.
6. Compressed Air High Voltage Load Break Switch
   • Uses compressed air to extinguish the arc, capable of interrupting large currents.
   • Features a relatively complex structure, suitable for systems operating at 60 kV and above.

This summary highlights the key features and application ranges of different types of high voltage load break switches, aiding in the selection of the appropriate device for specific system requirements.

Professional high voltage load break switch supplier and manufacturer

1. 1. 1. Zhejiang GONGSHUN Electrical Co.,Ltd (electric-cn.com), Our company was founded in the late 1990s, specializing in the production of inflatable cabinets, SF6 inflatable cabinets, and various high and low voltage complete sets of electrical equipment. It has multiple subsidiaries under its jurisdiction, including high-voltage load switch branch, high-voltage circuit breaker branch, high-voltage fuse branch, and technology development branch.Our technical expertise, comprehensive product portfolio and long-term rich experience are helping many customers in need to solve their power problems. We’re happy to help at any time.  Whether you need application product advice or technical assistance, our global service team is committed to providing you with the right support. For more technical information about medium voltage earthing switch, feel free to contact us, send an email to gongshun@electric-cn.com 
      2. Our company specializes in producing 12KV-40.5KV series high-voltage electrical products: FZN58, FLN48, FLN36, FZRN25, FZN21, FN18, ZFN16, FN12, FN8, FN7, FN5, XRNT, XRNP, VS1, ZN28, ZW8, ZW32, JN15, GN19, GN22, GN24, GN30, CLXGN15-12, HXGN □ -12, DXG-12 (L), DFW □ -12 high-voltage cable branch box, CLXGN □ -12 (SF6) series inflatable cabinet 12KV and 35KV cable accessories, etc; CLVXP-12 indoor AC high voltage fixed switchgear, CL-SIS-12 compact solid insulated ring main unit, professional assembly Schneider SC6 (SF6) series load switchgear, ABB produced SFG (SF6) series load switchgear and other series products; Distribution and agency of high-voltage load switches and inflatable cabinets produced by Schneider Electric and ABB; Siemens produces the 3AJ1 series of indoor medium voltage vacuum circuit breakers and other related products. The company has a complete range of products and has been operating safely on domestic and international power grids for a long time, receiving unanimous praise from both new and old users. Among them, multiple products such as FZRN25, FN12, FLN36-12, XRNT-12 have been exported to various countries and regions in East Asia, South Asia, Southeast Asia, Africa, and the United States.