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High Voltage Disconnect Switches - For Substations & Transmission Networks

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High Voltage Disconnect Switches for Reliable Power Isolation

Fenarro's high voltage disconnect switches are designed for safe electrical isolation and switching operations in substations, transmission networks, and power distribution systems. Covering voltage ratings from 12kV to 252kV, our indoor and outdoor disconnectors support manual and motorized operation with flexible configurations to meet different project requirements. Engineered for reliable performance, environmental adaptability, and compliance with international standards, Fenarro disconnect switches provide dependable solutions for power system maintenance and protection.

Indoor and Outdoor High Voltage Disconnect Switch Solutions

Fenarro Indoor High Voltage Disconnect Switch
Indoor Disconnector
Rated Voltage Up to 40.5kV
Indoor Switchgear & Distribution

Indoor High Voltage Disconnect Switch Series

Designed for indoor switchgear, substations, and industrial power distribution systems, Fenarro indoor disconnect switch series provides reliable isolation, compact installation, and flexible configurations for medium voltage applications.

Reliable Isolation Performance Rated voltage up to 40.5kV with IEC 62271-102 compliance for safe and dependable power isolation.
Long Service Life Mechanical endurance up to 10,000 operations, reducing maintenance requirements and improving system availability.
Flexible System Integration Multiple configurations support indoor switchgear, substations, and industrial distribution applications.
FCZW FGN
Explore Indoor Disconnect Switch Series →
Fenarro Outdoor High Voltage Disconnect Switch
Outdoor Disconnector
Rated Voltage Up to 126kV
Outdoor Substations & Networks

Outdoor High Voltage Disconnect Switch Series

Designed for outdoor substations and power distribution networks, Fenarro outdoor disconnect switch series delivers reliable isolation performance with proven adaptability for demanding outdoor environments.

Reliable Outdoor Operation Rated voltage up to 126kV with IEC 62271-102 compliance for stable operation in outdoor power systems.
Durable Environmental Adaptability Designed for outdoor installation with robust insulation and mechanical structures to withstand demanding operating conditions.
Wide Application Coverage Suitable for substations, transmission and distribution networks, and industrial power projects.
FGW FCJ
Explore Outdoor Disconnect Switch Series →

High Voltage Disconnect Switch Technical Specifications & Performance

Voltage Range All Series
12 – 126 kV

Fenarro disconnect switch series covers medium and high voltage applications for indoor switchgear and outdoor substations.

Rated Current Selected Models
Up to 3150 A

High-current configurations support reliable power isolation and switching requirements across distribution networks.

Mechanical Life Selected Models
Up to 10000 operations

Robust mechanical design ensures long service life with stable operation and reduced maintenance requirements.

Standard Compliance All Series
IEC
62271-102

Designed and tested according to international standards for safe isolation and reliable performance.

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Performance values represent the maximum ratings available across selected Fenarro disconnect switch models. Final specifications depend on the selected series and configuration.

High Voltage Disconnect Switches Series​​​​​​​
Direct from Manufacturer
  • High Voltage Disconnect Switch
    • FGN19-12 Series Indoor HV Disconnector
      FGN19-12 Series Indoor HV Disconnector
    • FGW4 Series Outdoor HV Disconnector
      FGW4 Series Outdoor HV Disconnector
    • FGW8 Series Outdoor HV Disconnector
      FGW8 Series Outdoor HV Disconnector
    • FGW4-12-24 Series Outdoor HV Disconnector
      FGW4-12-24 Series Outdoor HV Disconnector
    • FGW5 Series Outdoor HV Disconnector
      FGW5 Series Outdoor HV Disconnector
    • FGW7-126 Outdoor HV Disconnector
      FGW7-126 Outdoor HV Disconnector
    • FZCW10-40.5G Air Insulated Switchgear (AIS)
      FZCW10-40.5G Air Insulated Switchgear (AIS)
    • FCJ6 Outdoor High Voltage AC Disconnector
      FCJ6 Outdoor High Voltage AC Disconnector
    • FGW9 Outdoor HV Disconnector
      FGW9 Outdoor HV Disconnector
    • FGN30-12 Series Indoor Rotating Disconnector
      FGN30-12 Series Indoor Rotating Disconnector

High Voltage Disconnect Switch

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    Indoor vs Outdoor Disconnect Switch Comparison

    Selection Factor
    INDOOR DISCONNECT SWITCH Indoor Switchgear Integration For indoor switchgear, substations and indoor power systems
    OUTDOOR DISCONNECT SWITCH Outdoor Substation Application For outdoor substations and distribution networks
    01 Installation Environment

    Switchgear rooms, substations, and indoor power systems

    Outdoor substations and distribution networks

    02 Protection Requirements

    Relies on indoor enclosure and controlled environment

    Weather-resistant design for outdoor exposure

    03 Environmental Conditions

    Designed for lower pollution and stable conditions

    Handles UV, humidity, temperature changes, and pollution

    04 Structural Design

    Compact integration with switchgear systems

    Robust construction for open-air installation

    05 Typical Applications

    Switchgear isolation, transformers, and motor circuits

    Substation isolation, overhead lines, and feeder systems

    CHOOSE INDOOR DISCONNECT SWITCH WHEN
    Compact switchgear integration and frequent switching are required.

    For switchgear, transformers, and indoor distribution systems.

    CHOOSE OUTDOOR DISCONNECT SWITCH WHEN
    Reliable isolation is needed for outdoor networks.

    For substations, overhead lines, and harsh environments.

    Still deciding between Indoor and Outdoor Disconnect Switch?

    Share your installation environment, voltage level, and application requirements with Fenarro for suitable model selection support.

    Discuss Your Project →

    Key Features for High Voltage Disconnect Switches

    Robust Mechanical Design
    •  Double-break contact system for reliable isolation
    •  Corrosion-resistant galvanized steel construction
    •  Self-lubricating bearings for smooth operation
    • ​​​​​​​ Anti-icing design for cold climates

    Flexible Operation Options​​​​​​​
    •  Manual gang-operated mechanisms
    •  Motorized operation for remote control
    •  Grounding blade options (single or double)
       Interlocking systems for safety
    Environmental Durability​​​​​​​
     -40°C to +55°C temperature range
     IP54 protection standard
     Anti-pollution design for coastal areas
    ​​​​​​​ Seismic withstand capability

    Why Choose Fenarro High Voltage Disconnect Switches?

    • Complete Voltage Coverage
      12kV–126kV solutions for indoor and outdoor power applications.
    • Certified Quality Control
      Manufactured with strict processes and international testing standards.
    • Flexible Project Solutions
      Multiple configurations for OEM, EPC, and utility projects.
    • Technical Support
      Professional assistance from selection to project delivery.

    High Voltage Disconnect Switch Applications

    Transmission Substations

     

    Transmission Substations

     
    Provide visible isolation for transformers, circuit breakers, and busbars in 110kV-500kV substations, ensuring maintenance safety.
    Renewable Energy Integration

     

    Distribution Networks

     
    Ideal for 10kV-35kV distribution lines, offering reliable isolation for line maintenance and section switching.
    Long-Distance Transmission Lines

     

    Industrial Plants

     
    Suitable for large industrial complexes requiring safe isolation of high voltage equipment for maintenance.
    Industrial Power Systems

     

    Renewable Energy Farms

     
    Perfect for solar and wind farms where reliable isolation of collection systems is required for maintenance safety.
    Ready to Specify Your High Voltage Disconnect Switches ?


    Contact our engineering team for technical consultation and customized solutions.  Request a quote with competitive pricing and delivery timelines.

    Get your quote now!

    High Voltage Disconnect Switch vs Circuit Breaker

    Comparison Factor
    Disconnect Switch
    Circuit Breaker
    Primary Function
    Provides visible isolation of electrical circuits for maintenance safety
    Interrupts fault currents and protects electrical systems
    Main Operation
    Opens or closes circuits under no-load conditions
    Opens circuits during normal operation and fault conditions
    Arc Interruption
    Usually not designed to interrupt high fault currents
    Designed to extinguish arcs during fault interruption
    Protection Function
    Provides isolation and safety confirmation
    Provides overcurrent and short-circuit protection
    Typical Applications
    Equipment isolation, maintenance switching, visible circuit separation
    Fault protection, system control, automatic protection
    Common Installation
    Used with circuit breakers in substations and distribution systems
    Installed as the main protection device in power systems
    SELECTION GUIDE Disconnect Switch vs Circuit Breaker: Key Differences and Selection Guide

    Learn when to use a disconnect switch or circuit breaker based on isolation requirements, protection functions, and power system applications.

    Read Guide →

    Related Proudcts

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    FAQs About Fenarro's High Voltage Disconnect Switches

    • Q Do you provide grounding switches?

      A  Yes, we offer both single and double grounding blade options for all models.

    • Q What is the typical delivery time for disconnect switches?

      A  Standard products: 8-12 weeks; Custom configurations: 12-16 weeks

    • Q Can your disconnectors be motorized for remote operation?

      A Yes, we offer motorized versions for all models with remote control capability.

    • Q What is the difference between disconnect switches and circuit breakers?

      A Disconnect switches provide visible isolation for maintenance but cannot interrupt load current, while circuit breakers can interrupt fault currents.

    • Q How to confirm payment?

      A We accept payment methods such as wire transfer and PayPal. Other payment methods are also acceptable, please contact us before making payment through other methods. Additionally, a 30% deposit is feasible, and the balance should be paid before shipment.

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    Tell us your project needs, and our engineers will provide a tailored solution with detailed quotation and technical recommendations—free of charge.

    Fenarro has been committed to providing safe,  efficient and convenient solutions for power  systems since 2009

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