Indoor 3 Phase Disconnect Switch 1250A

• Type: High-voltage
• Structure: Three-column Disconnector
• Installation: Indoor High-voltage
• Operation: Manual
• Grounding Mode: as Specification
• Movement Mode: as Specification
• Model NO.: GN19-12
• 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

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

Key Features:

• Three-pole type isolation switch


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


• Enhanced mechanical strength with connecting contact knife composed of two slotted copper plates


• Improved dynamic stability with magnetic locking plate in GN19-12/1000, 1250 models

Structure and Working Principle:

The conductive part of GN19-12/400, 630, 1000, 1250 type disconnect switch is fixed on the base by pillar insulators, with each phase installed in parallel. The contact knife design ensures efficient heat dissipation and mechanical strength, enhancing the switch's performance and stability.

Model Meaning:

The GN19-12, 12C series offers various models with different features to suit specific requirements, ensuring reliable operation and safety in high-voltage applications.

Product Description

Yueqing Liyond Electric Co., Ltd.

Product: Environmental Conditions and Technical Parameters

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

• Ambient temperature: +40ºC (upper limit) and -10ºC (lower limit). Storage and transportation allowed at -25ºC.


• 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 other pollutants.


• Vibration: No regular or violent vibrations.

For any deviations from the above conditions, please consult with Yueqing Liyond Electric Co., Ltd. for solutions.

Technical Parameters:

Include the technical parameters of the product here.

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