ODM China VSB-12 Indoor High-Voltage Vacuum Circuit Breaker - 12kV, 630A to 4000A, Reliable Suppliers & Factory Manufacturers, Companies
ODM China VSB-12 Indoor High-Voltage Vacuum Circuit Breaker - 12kV, 630A to 4000A, Reliable Suppliers & Factory Manufacturers, Companies
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ODM China VSB-12 Indoor High-Voltage Vacuum Circuit Breaker - 12kV, 630A to 4000A, Reliable Suppliers & Factory Manufacturers, Companies
ODM China VSB-12 Indoor High-Voltage Vacuum Circuit Breaker - 12kV, 630A to 4000A, Reliable Suppliers & Factory Manufacturers, Companies

ODM China VSB-12 Indoor High-Voltage Vacuum Circuit Breaker - 12kV, 630A to 4000A, Reliable Suppliers & Factory Manufacturers, Companies

The VSB-12 Indoor High-Voltage Vacuum Circuit Breaker, designed specifically for 12kV power systems, is a top-tier solution offered by leading manufacturers in China. This circuit breaker accommodates rated currents ranging from 630A to 4000A and boasts a short-circuit breaking capacity of up to 40kA, ensuring robust performance in demanding environments, With high insulation strength and a mechanical endurance of 20,000 operations, the VSB-12 guarantees reliability and low contact resistance. Ideal for various indoor applications, this vacuum circuit breaker is compatible with both AC and DC control voltages. It features rapid opening and closing times, making it suitable for frequent switching operations, ultimately delivering long-term stability, As a trusted choice among suppliers in China, the VSB-12 Indoor High-Voltage Vacuum Circuit Breaker stands out as a reliable solution for high-voltage requirements. Choose this factory-manufactured circuit breaker for exceptional performance and durability in your electrical systems
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Product Description

Type Designation

BrandMINGRI
Product NameHigh-Voltage Vacuum Circuit Breaker
ModelVSB-12
Rated Voltage12kV
Rated Current63A
Rated Frequency50Hz
Altitude≤1000 meters
Mechanical Life20,000 operations

Technical Parameters

No. Item Unit Value
1 Rated Voltage kV 12
2 Maximum Operating Voltage kV 12
3 Rated Current A 630
1250		 630 1250
1600 2000
2500 3150		 1250 1600
2000 2500
3150 4000
4 Rated Short-Circuit Breaking Current (Rated Short-Time Withstand Current - RMS Value) kA 20/25 31.5 40
5 Rated Short-Circuit Making Current (Peak) kA 50/63 80 100
6 Rated Peak Withstand Current(Rated Peak Withstand Current-Peak) kA 50/63 80 100
7 4S Rated Short-Circuit Withstand Voltage kA 20/25 31.5 40
8 Rated Insulation Level Power-Frequency Withstand Voltage (1min) (Before and After Rated Breaking) KV Phase-to-Earth 42 (Across Isolating Distance 48)
Impulse Withstand Voltage (Before and After Rated Breaking)/Rated Lightning Impulse Withstand Voltage (Peak) Phase-to-Earth 75 (Across Isolating Distance 85)
9 Rated Short-Time Withstand Current Duration s 4
10 Rated Operating Sequence O-0.3s-CO-180s-CO
11 Mechanical Life time 20000
12 Rated Short-Circuit Current Breaking Operations time 50
13 Operating Mechanism Rated Closing Voltage (DC) V AC、DC 110,220
14 Operating Mechanism Rated Opening Voltage (DC) V AC、DC 110,220
15 Contact Gap mm 11±1
16 Over-Travel(Contact Spring Compression Length) mm 3.5±0.5
17 Three-Phase Contact Bounce Time (During Opening/Closing) ms ≤2
18 Contact Bounce Time During Closing ms ≤2
19 Average Opening Speed m/s 0.9-1.2
Average Closing Speed m/s 0.5~0.8
20 Opening time At Maximum Operating Voltage s ≤0.05
21 At Minimum Operating Voltage ≤0.08
22 Closing time s 0.1
23 Main Circuit Resistance UΩ 630≤50 1250≤45
24 Permissible Cumulative Wear Thickness of Moving/Fixed Contacts mm 3

Product Display

VSB-12 High-Voltage Vacuum Circuit Breaker
VSB-12 Indoor High-Voltage VCB

Outline and Installation Dimension

Inside the brackets: 275mm phase spacing
VSB-12-2

Ordering Instructions

Order Specifications Required from Customers:

a) Product Name: Model Number, Rated Current;

b) Rated Current, Number of Poles;

c) Minimum order Quantity.

Frequently Asked Questions

Q What is the rated voltage of the VSB-12 vacuum circuit breaker?
The VSB-12 High-Voltage Vacuum Circuit Breaker has a rated voltage and maximum operating voltage of 12kV.
Q What is the mechanical life expectancy of this circuit breaker?
The VSB-12 vacuum circuit breaker is designed for high durability, offering a mechanical life of up to 20,000 operations.
Q What information is required when placing an order?
Customers need to specify the Product Name & Model Number, the Rated Current, the Number of Poles, and the Minimum Order Quantity.
Q What is the maximum operating altitude for the VSB-12 VCB?
This high-voltage vacuum circuit breaker is designed for installation at altitudes less than or equal to 1000 meters.
Q What are the opening and closing speeds of this circuit breaker?
The average opening speed of the VSB-12 ranges between 0.9 and 1.2 m/s, while the average closing speed ranges between 0.5 and 0.8 m/s.
Q What is the contact gap and over-travel specification?
The contact gap is 11±1 mm, and the over-travel (contact spring compression length) is 3.5±0.5 mm.

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