China China VS1-12C Indoor High-Voltage Side-Mounted Vacuum Circuit Breaker Suppliers and Factory for Reliable Power Protection Manufacturers, Company
China China VS1-12C Indoor High-Voltage Side-Mounted Vacuum Circuit Breaker Suppliers and Factory for Reliable Power Protection Manufacturers, Company
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China China VS1-12C Indoor High-Voltage Side-Mounted Vacuum Circuit Breaker Suppliers and Factory for Reliable Power Protection Manufacturers, Company
China China VS1-12C Indoor High-Voltage Side-Mounted Vacuum Circuit Breaker Suppliers and Factory for Reliable Power Protection Manufacturers, Company

China China VS1-12C Indoor High-Voltage Side-Mounted Vacuum Circuit Breaker Suppliers and Factory for Reliable Power Protection Manufacturers, Company

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The VS1-12C Indoor High-Voltage Side-Mounted Vacuum Circuit Breaker is a top-tier solution for reliable circuit protection in 24kV power systems. Manufactured by trusted suppliers in China, this circuit breaker is specifically designed for side-mounted installation. With a rated current of 1600A and an impressive breaking capacity, it delivers robust performance across various industrial and grid applications. The VS1-12C operates reliably in a wide temperature range from -15°C to +40°C and at altitudes of up to 2000m, making it suitable for high humidity environments as well. As a leading factory in the industry, we ensure that the VS1-12C Indoor High-Voltage Side-Mounted Vacuum Circuit Breaker provides maximum safety with minimal maintenance, meeting the needs of power distribution systems worldwide.

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Product Description

Type Designation

VS1-12C Type Designation Structure
1 Vacuum Circuit Breaker (VCB)
2 Design Number
3 Rated Voltage (kV)
4 Side-mounted
5 Rated Current (A)
6 Rated Short-circuit Breaking Current (kA)

Normal Use Environment

Ambient air temperature: upper limit +40°C, lower limit -15°C;
Daily average relative humidity of air not more than 95%, monthly average not more than 90%;
Altitude: ≤2000m;
Seismic intensity: not exceeding 8 degrees;
Locations without fire, explosion hazard, severe pollution, chemical corrosion, and violent vibration.
Note: If clients have any special requirements, they may propose them when placing orders, and we will do our utmost to meet their needs.

Product Display

VS1-12C Indoor HV Vacuum Circuit Breaker (1)
VS1-12C Indoor HV Vacuum Circuit Breaker (2)

Technical Parameters

Item Unit Parameter
Rated Voltage kV 12
Maximum Operating Voltage kV 12
Rated Current A 630 1250 1600
Rated Short-Circuit Breaking Current kA 20 25 31.5
Rated Short-Circuit Making Current kA 50 63 80
Rated Peak Withstand Current kA 50 63 80
4S Rated Short-Time Withstand Voltage kA 20 25 31.5
Rated Operating Sequence - O-0.3s-CO-180s-CO
Rated Insulation Level Power-Frequency Withstand Voltage (Before and After Rated Breaking) kV 42 (section 48)
Impulse Withstand Voltage (Before and After Rated Breaking) 75 (section 85)
Mechanical Life time 10000
Rated Short-Circuit Current Breaking Operations time 50
Operating Mechanism Rated Closing Voltage (DC) V 110, 220
Operating Mechanism Rated Opening Voltage (DC) V 110, 200
Contact Gap mm 11±1
Over-Travel (Contact Spring Compression Length) mm 4.5±0.5
Three-Phase Contact Bounce Time (During Opening/Closing) ms ≤2
Contact Bounce Time During Closing ms ≤2
Average Opening Speed m/s 0.9±1.2
Average Closing Speed m/s 0.4±0.8
Opening Time At Maximum Operating Voltage s ≤0.05
At Minimum Operating Voltage ≤0.08
Closing Time s 0.1
Resistance of Each Main Circuit μΩ 60 50

Outline and Installation Dimension

VS1-12C Outline and Installation Dimension Blueprint

Frequently Asked Questions

What is the rated voltage of the VS1-12C Vacuum Circuit Breaker?
The VS1-12C has a rated voltage of 12 kV, with a maximum operating voltage also at 12 kV, making it suitable for medium-voltage indoor high-voltage distribution systems.
What rated current options are available for the VS1-12C?
The VS1-12C is available in three rated current options: 630 A, 1250 A, and 1600 A, with corresponding rated short-circuit breaking currents of 20 kA, 25 kA, and 31.5 kA respectively.
What are the normal environmental conditions for installing the VS1-12C?
The VS1-12C should be installed in locations where the ambient temperature is between -15°C and +40°C, altitude does not exceed 2000 m, seismic intensity is no more than 8 degrees, and there is no fire, explosion hazard, severe pollution, chemical corrosion, or violent vibration.
What is the mechanical life of the VS1-12C Vacuum Circuit Breaker?
The VS1-12C has a mechanical life of 10,000 operations, and it supports up to 50 rated short-circuit current breaking operations, ensuring long-term reliability in demanding applications.
What operating mechanism voltage does the VS1-12C support?
The VS1-12C supports a DC closing voltage of 110 V or 220 V and a DC opening voltage of 110 V or 200 V, providing flexibility for various control configurations.
Can the VS1-12C be customized for special installation requirements?
Yes. If clients have special requirements beyond standard specifications — such as different environmental conditions or custom dimensions — they may propose them when placing orders, and the manufacturer will do its utmost to meet those needs.

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