Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
VSG-12 Vacuum Circuit Breaker: 12kV 4000A indoor high voltage VCB, power grid switchgear, 10000 cycles, enclosed column, maintenance-free, 40kA breaking, E2/M2 life, frequent operation, -15°C to +40°C.
Advanced VSG-12 Vacuum Circuit Breaker Series: Premium indoor high voltage vacuum circuit breaker designed for 12kV power system indoor switching equipment as power grid equipment, industrial and mining enterprises power design protection and control unit, suitable for switching on/off loads of different nature and frequent operation, multiple short-circuit current occasions, delivering 630-4000A rated current, 20-40kA rated short-circuit breaking, 50-100kA short-circuit closing (peak), 10000 mechanical life cycles (M2 level), 50 rated short-circuit breaking/closing times, E2 level electrical life, new type operating mechanism, international brand enclosed column integrating vacuum arc extinguishing chamber and main circuit parts into whole.
Frequent Operation and Maintenance-Free Ready: VSG-12 incorporates enclosed column protecting arc chamber from collision/dust/condensation effects, environment adaptable, greatly reducing operation maintenance cost, operating mechanism and circuit breaker body integrated design verified by type test, three-phase breaking/closing asynchronism <2ms, 0.9-1.2m/s breaking speed, operating at -15°C to +40°C, 95% daily humidity, altitude ≤1000m, providing reliable vacuum circuit breaking solution for power grid equipment, industrial/mining enterprises, frequent operation applications.
| Rated Current | Rated Interrupting Current | H1 | H2 | H3 | P | A | B |
| 630A | 25kA/31.5kA | 205 | 275 | 520 | 150 | 740 | 300 |
| 210 | 860 | 420 | |||||
| 275 | 295 | 615 | 150 | 740 | 300 | ||
| 210 | 860 | 420 | |||||
| 275 | 990 | 550 | |||||
| 1250A | 25kA/31.5kA | 205 | 275 | 520 | 150 | 740 | 300 |
| 210 | 860 | 420 | |||||
| 275 | 295 | 615 | 150 | 740 | 300 | ||
| 210 | 860 | 420 | |||||
| 275 | 990 | 550 |
| VSG-12 Vacuum Circuit Breaker Specifications | VSG-12 (20/25kA) | VSG-12 (31.5kA) | VSG-12 (40kA) | Unit |
|---|---|---|---|---|
| Brand | Bepto Insulation Systems | – | ||
| Model Number | VSG-12 | – | ||
| Product Type | Indoor High Voltage Vacuum Circuit Breaker (VCB) for Power Grid Switchgear with Enclosed Column Maintenance-Free Technology | – | ||
| Core Technology | New Type Operating Mechanism + International Brand Enclosed Column + Vacuum Arc Chamber + Main Circuit Integrated + Collision/Dust/Condensation Protection + E2/M2 Life | – | ||
| Rated Voltage | 12 | kV | ||
| Maximum Working Voltage | 12 | kV | ||
| Rated Current | 630, 1250 | 630, 1250, 1600, 2000, 2500, 3150 | 1250, 1600, 2000, 2500, 3150, 4000 | A |
| Rated Short-Circuit Breaking Current | 20/25 | 31.5 | 40 | kA |
| Rated Short-Circuit Closing Current (Peak) | 50/63 | 80 | 100 | kA |
| Rated Withstand Current (Peak) | 50/63 | 80 | 100 | kA |
| 4s Rated Short-Time Withstand Current | 20/25 | 31.5 | 40 | kA |
| Rated Insulation Level – Industrial Frequency Withstand Voltage | 42/48 | kV | ||
| Rated Insulation Level – Lightning Impulse Withstand Voltage | 75/85 | kV | ||
| Rated Operation Sequence | O-0.3s-CO-180s-CO | – | ||
| Mechanical Life (M2 Level) | 10000 | cycles | ||
| Electrical Life (E2 Level) | Yes (E2 Level Electrical Life) | – | ||
| Rated Short-Circuit Current Breaking/Closing Times | 50 | times | ||
| Operating Mechanism Rated Voltage (Opening/Closing Coil) | AC/DC 110, 220 | V | ||
| Switching Distance of Contact | >11 | mm | ||
| Overtravel (Contact Spring Compression Length) | 4±0.5 | mm | ||
| Three-Phase Breaking/Closing Asynchronism | <2 | ms | ||
| Contact Closing Bounce Time | <2 | ms | ||
| Average Breaking Speed | 0.9-1.2 | m/s | ||
| Average Closing Speed | 0.5-0.8 | m/s | ||
| Breaking Time (Highest Operating Voltage) | <0.05 | s | ||
| Breaking Time (Lowest Operating Voltage) | <0.08 | s | ||
| Closing Time | <0.1 | s | ||
| Main Circuit Resistance | <45 | μΩ | ||
| Allowance Accumulated Wear Thickness of Contact | 3 | mm | ||
| Ambient Temperature (Maximum) | +40 | °C | ||
| Ambient Temperature (Minimum) | -15 | °C | ||
| Daily Average Relative Humidity | <95 | % | ||
| Monthly Average Relative Humidity | <90 | % | ||
| Daily Average Vapor Pressure | <2.2×10⁻² | MPa | ||
| Monthly Mean Vapor Pressure | <1.8×10⁻² | MPa | ||
| Altitude | ≤1000 | m | ||
| Enclosed Column Design | Yes (International Brand, Integrates Vacuum Arc Chamber + Main Circuit Parts, Protects from Collision/Dust/Condensation) | – | ||
| Maintenance-Free Design | Yes (Enclosed Column Part Maintenance-Free, Operating Mechanism Less Maintenance, Greatly Reduces Operation Maintenance Cost) | – | ||
| Integrated Design | Yes (Operating Mechanism and Circuit Breaker Body Integrated, Type Test Verified) | – | ||
| Environment Adaptability | High (Enclosed Column Protection, Environment Adaptable) | – | ||
| Key Advantages | Power Grid Switchgear, Enclosed Column, 10000 Cycles, E2/M2 Life, Maintenance-Free, Frequent Operation, Multiple Short-Circuit, Collision/Dust/Condensation Protection, Integrated Design, Type Test Verified | – | ||
| Primary Applications | Power Grid Equipment, Industrial and Mining Enterprises Power Design Protection and Control Unit, Switching On/Off Loads of Different Nature, Frequent Operation Applications, Multiple Short-Circuit Current Occasions | – |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.
Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
