GW4-12 12kV Outdoor High Voltage Disconnect Switch

The GW4-12 series outdoor disconnect switch adopts a double-column horizontal opening structure and is suitable for outdoor installations in substations, transformer stations, overhead distribution systems, and industrial power networks.

It is designed to:

• isolate energized circuits under no-load conditions,
• provide a visible disconnection point,
• improve maintenance safety,
• support manual or motorized operation.

The switch can be equipped with:

• single grounding switch,
• double grounding switch,
• anti-pollution insulators,
• electric operating mechanism.

It complies with IEC and GB standards for high-voltage disconnect switches.

Main Features

• Rated voltage: 12kV
• Outdoor installation type
• Double-column horizontal break structure
• Visible isolation gap
• Manual or motorized operation
• Optional grounding switch
• Reliable mechanical interlocking
• Anti-pollution insulation design
• Long service life
• Suitable for harsh outdoor environments

Technical Specifications

Model Meaning

Typical models include:

• GW4-12/400
• GW4-12/630
• GW4-12D/1250-25
• GW4-12W/630

Meaning:

• GW = Outdoor disconnect switch
• 4 = Design serial number
• 12 = Rated voltage (kV)
• D = With grounding switch
• W = Anti-pollution type
• 400 / 630 / 1250 = Rated current (A)
• 25 = Short-time withstand current (kA)

Working Conditions

• Ambient temperature: -25°C to +40°C
• Altitude: ≤2000m or ≤3000m
• Wind speed: ≤35m/s
• Pollution degree: III
• Earthquake intensity: ≤8 degree
• Installation environment should be free from:
  • explosive materials,
  • corrosive gases,
  • severe vibration.

Applications

• Outdoor substations
• Overhead distribution lines
• Transformer isolation systems
• Industrial switchyards
• Renewable energy substations
• Utility power distribution networks

Product Advantages

Reliable Outdoor Performance

Designed for long-term operation under rain, UV exposure, dust, and polluted environments.

Visible Isolation

Provides a clear visible break to ensure operator and maintenance safety.

Flexible Configuration

Supports manual operation, motorized operation, and grounding switch configurations.

Strong Mechanical Structure

Stable mechanical linkage ensures reliable synchronization and long service life.

Standards

The GW4-12 disconnect switch generally complies with:

• IEC 62271-102
• GB 1985
• IEC 60129

Outline Drawing