Claire
Mr.Fu
Claire
China VSB-12 Indoor High-Voltage Vacuum Circuit Breaker - 12kV, 630A to 4000A, Reliable Suppliers & Factory
Type Designation
| Brand: | MINGRI |
| Product Name: | High-Voltage Vacuum Circuit Breaker |
| Model: | VSB-12 |
| Rated Voltage: | 12kV |
| Rated Current: | 63A |
| Rated Frequency: | 50Hz |
| Altitude: | ≤1000 meters |
| Mechanical Life: | 20,000 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
Outline and Installation Dimension
Inside the brackets: 275mm phase spacing
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
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.
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.
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.
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.
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.
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.