400A 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: as Specification
• Movement Mode: as Specification
• Number of Poles: Three Pole
• Grounding: as Specification
• Series: Three
• Run: as Specification
• Switching Mode: as Specification
• Common Model: as Specification
• Structure of Operating: Manual
• Certification: ISO
• Brand: Liyond
• Rated Voltage: 12kv
• Current: 400A-1250A
• Color: Grey
• Transport Package: Standard Export Packaging
• Specification: as specification
• Trademark: Liyond
• Origin: China

Product Description

GN19-12, 12C Series Indoor High-Voltage Disconnect Switches

Product Description

The GN19-12, 12C series indoor high-voltage disconnect switches, manufactured by Yueqing Liyond Electric Co., Ltd., are designed for indoor use with a rated voltage of 12kV, three-phase AC 60Hz. These switches are used for dividing and closing circuits under voltage and no load conditions.

Features:

• Three-pole type structure


• Consists of base frame, rotating shaft, lever, porcelain pillar insulator, gate knife, and connection board


• Improved mechanical strength and heat dissipation area of contact knife


• Models available: GN19-12/400, 630, 1000, 1250

Working Principle:

The conductive part of the disconnect switch is fixed on the base by pillar insulators, with contact knives and holders for each phase. The contact knives are connected to the tie insulator and spindle, which is linked to the moving mechanism through the handle. Magnetic locking plates are included in certain models to enhance stability during short-circuit conditions.

Model Meaning:

The model numbers indicate the rated current capacity of the disconnect switches, with variations available to suit different application requirements.

Product Description

Yueqing Liyond Electric Co., Ltd.

Product: 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