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IEC 60420 10KV High Voltage Vacuum Load Break Switch

Categories Transmission Line Insulator
Brand Name: Suntech
Model Number: FZ(R)N21-12D
Certification: ISO
Place of Origin: Ningbo,China
MOQ: 1 Set
Price: Get The Newest Price
Payment Terms: L/C, T/T, Western Union, MoneyGram
Supply Ability: 8000pcs per month
Delivery Time: 30-35days after Payment
Packaging Details: Exporting Cartons and Pallets
Product Name: Alternating-Current Load Switch
Altitude: Under 1000M
Ambient Temperature: -40℃-+40℃
Usage: High and Low Voltage
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IEC 60420 10KV High Voltage Vacuum Load Break Switch

Indoor Long Electrical Life AC 10KV High Voltage Vacuum Load Break Switch


FZ(R)N2 1-12D indoor high-voltage alternatin-current vacuum load switch-fuse combination(“combination" for short) is used in power systems with an AC frequency of 50 Hz and a rated voltage of 10 kV to break load currents, overload currents and short-circuit currents. It particulaly applies to the places needing control, protection for oilfree maintenance-free and frequently-operated ring network power supply units and terminal power supply transformers.

The combination is charaterized by large breaking capacity, high safety and stability, long electrical life, support for frequent operation, less maintenance, etc. It has an apparent isolating gap, an earthing switch with making capability, an electric spring actuator and remote control capability.


1.1 Technical parameters

ItemUnitReference value
Rated voltagekV12
Rated frequencyHz50
Maximum rated current of the fuseA125
Rated transfer currentA3150
Rated short-circuit breaking current(expected effective value)kV31.5
Rated short-circuit making current (expected peak value)kV80

1min power-frequengy

withstand voltage

Vacuum gap, interpole, pole to-groundkV42
lsolating gapkV48

Lightning impulse

withstand voltage

Vacuum gap, interpole, pole-to-groundkV75
Isolating gapkV85
Output energy of the fuse strikerJ2-5

1.2 Technical parameters for disconnector assembling

ItemUnitReference value
Non-synchronous making of the three contactsmm≥3
Deviation of making of the three contactsmm≤1
Positive pressure of the contact switchN260±30
Size of the gapmm≥150
Circuit resistanceμΩ≤40


Product standards

1. GB 16926-1997 High-voltage alternating-current load switch-fuse combinations

2. IEC 60420 High-voltage alternating-current load switch-fuse combinations

Ambient condition

1. The altitude: under 1000M.

2. The ambient temperature: -40℃-+40℃.

3. The relative humidity of air: monthly≤90%, daily≤95%.


About us: Suntech Power Tools, which located in the southeast China, it is the earliest origin Power Tools Leading City in China.We are making the various related cable pulling tools, and hydraulic tension and puller to support the transmission work.All canaccept OEM and professionally produced per ISO 9001:2008, they are being sold to over more than 50 countries in the world,and has wined the best brand reputations. Some items like the stringing blocks,cable rollers,the cable jack stands,etc we can customized, and the Construction Safety Tools ,are not demanded the MOQ. You can freely help you out either

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