Gn19-12 Indoor 12kv Three-Pole Grey Fused Isolation Switch

• Customization: Available
• Type: High-voltage
• Structure: Three-column Disconnector
• Model NO.: GN19-12
• Installation: Indoor High-voltage
• Operation: Manual
• Grounding Mode: Grounding
• Movement Mode: Horizontal Rotary Type
• Number of Poles: Three Pole
• Grounding: Single Ground
• Series: Three
• Run: as Specification
• Switching Mode: as Specification
• Common Model: Gn19
• Structure of Operating: Manual
• Certification: ISO9001
• Brand: Liyond
• Rated Voltage: 12kv
• Current: 400A-1250A
• Color: Grey
• Frequency: 50/60Hz
• OEM: Accept
• Application: High Voltage
• Transport Package: Standard Export Packaging
• Specification: 12kV
• Trademark: Liyond
• Origin: China
• Package Size: 85.00cm * 55.00cm * 35.00cm
• Package Gross Weight: 35.000kg

Product Description

GN19-12/400 Indoor 12kV Three-Pole Grey Fused Isolation Switch / HV Disconnect Switch with Fuse Protection


The GN19-12/400 Grey Fused Isolation Switch is a 12 kV rated indoor high-voltage disconnect switch designed for industrial and utility power distribution systems. It is engineered for safe circuit isolation and fuse-protected disconnection under no-load conditions, making it ideal for maintenance, service shutdown, and circuit segmentation.

Constructed with a three-pole rotary mechanism, this model supports full three-phase electrical isolation. The manual operating handle provides straightforward switch control, while the integrated fuse holders accommodate high-capacity fuses for enhanced overcurrent safety.

Built with quality insulators (typically porcelain or epoxy resin) and mechanical components, the GN19 series offers reliable performance in indoor switchgear and distribution cabinet installations. It complies with relevant medium-voltage standards for insulation, mechanical strength, and safety.

Product Features

• 12kV Rated Voltage - Designed for indoor high-voltage AC 50/60 Hz applications in electrical distribution systems.

• 400 A Fused Isolation Switch - Provides secure isolation and overcurrent protection via integrated fuse holders.

• Three-Pole Rotary Operation - Ensures full three-phase circuit isolation in medium-voltage environments.

• Manual Operating Mechanism - Reliable and simple manual disconnect for maintenance and safety.

• Robust Grey Enclosure - Durable indoor design suitable for switchgear cabins and control panels.

• High Withstand Performance - Supports rated withstand requirements (e.g., 31.5kA peak).

  
   
  
  
   

  Environmental Conditions and Technical Parameters

   

  Ensure optimal performance of the product by adhering to the following environmental conditions:

  
  
  • Ambient temperature: +40ºC upper limit, -10ºC lower limit (storage and transportation at -25ºC allowed)
  
  
  • Altitude: not exceeding 1000m
  
  
  • Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%
  
  
  • Water vapor pressure: daily average not exceeding 2.2 × 10-3Mpa, monthly average not exceeding 1.8 × 10-3Mpa
  
  
  • Air quality: free from corrosive or combustible gases, water vapor, and pollution
  
  
  • No regular and violent vibration
   

  For any deviations from the above conditions, please consult with the manufacturer for resolution.

   

  Technical Parameters:

  Include technical specifications to optimize product performance.

  Model	Rated voltage  (kV)	Rated current  (A)	Rated short-time withstand current (kA/4s)	Rated peak withstand current (kA)
  GN19-12/400-12.5	12	400	12.5	31.5
  GN19-12/630-20	12	630	20	50
  GN19-12/1000-31.5	12	1000	31.5	80
  GN19-12/1250-31.5	12	1250	31.5	80
  GN19-12C/400-12.5	12	400	12.5	31.5
  GN19-12C/630-20	12	630	20	50
  GN19-12C/1000-31.5	12	1000	31.5	80
  GN19-12C/1250-31.5	12	1250	31.5	80

  
  

   

   
  

  FAQ