T: +86-180-67981129
E:sales@pino-electric.com
E:sales@pino-electric.com
Makou Industrial Park, Yongxiu County, Jiujiang city, Jiangxi Province, China
As a professional manufacturer of medium voltage electrical equipment, Pino Electric presents the VS1 indoor vacuum circuit breaker, engineered for 12kV three-phase AC 50Hz electrical systems. This advanced VCB serves as a critical protection component for indoor installations, widely deployed in utility grids, industrial and mining operations, power generation facilities, and distribution substations. It provides comprehensive safeguarding for cables, overhead lines, distribution stations, motors, transformers, generators, and capacitors, particularly excelling in scenarios requiring frequent operational cycles or repeated short-circuit current interruption.
Our VS1 VCB utilizes cutting-edge vacuum interrupter technology to achieve fast and reliable arc quenching, eliminating the risks associated with oil or gas-based breakers. Standard models are designed for altitudes up to 1000m, operating temperatures from -25°C to +40°C, and humidity levels up to 95% daily mean. For special operating conditions including high altitudes above 1000m or high-humidity environments with condensation risk, we offer customized solutions tailored to your specific project requirements.
Incorporates state-of-the-art vacuum arc-quenching technology to interrupt fault currents in ≤50ms, significantly reducing thermal and electromagnetic damage to connected equipment. This rapid response minimizes downtime and prevents costly production losses in industrial facilities.
The sealed vacuum arc-quenching chamber requires minimal maintenance, with a mechanical lifespan of 20,000 operations and 20,000 rated current breaking cycles. It can withstand 50 rated short-circuit current interruptions (30 for 40kA versions), delivering long-term reliable performance and reducing lifecycle costs by up to 70% compared to traditional oil breakers.
Available in both handcart and fixed configurations with three cabinet width options (650mm, 800mm, 1000mm), the VS1 VCB fits seamlessly into existing switchgear setups. Its compact structure saves valuable substation space, lowering construction and installation costs for your projects.
Optional smart control units enable remote management, real-time status monitoring, and advanced fault diagnosis, enhancing grid operational intelligence and reducing the need for on-site maintenance personnel. The energy-conservative design lowers power system consumption, supporting your sustainability goals.
NO. | Project | Unit | Numerical value | ||||
1 | Rated voltage | kV | 12 | ||||
2 | Rated short-time power frequency withstand voltage(1min) | 42 | |||||
3 | Rated lightning shock tolerance voltage (peak) | 75 | |||||
4 | Rated frequency | Hz | 50 | ||||
5 | Rated current | A | 630 | 630 1250 1600 | 1250 1600 2000 | ||
6 | Rated short-circuit breaking current | kA | 20/25 | 31.5 | 40 | ||
7 | Rated short-time withstand current | 20/25 | 31.5 | 40 | |||
8 | Rated short circuit duration | S | 4 | ||||
9 | Rated peak tolerable current | kA | 50/63 | 80 | 100 | ||
10 | Rated short-circuit closing current | 50/63 | 80 | 100 | |||
11 | Secondary circuit power frequency withstand voltage (1min) | V | 2000 | ||||
12 | Rated single/back-to-back capacitor group breaking current | A | 630/400(800/400 for 40kA) | ||||
13 | Rated capacitor bank turn-on inrush current | kA | 12.5(Frequency not more than 100Hz) | ||||
14 | Switching time (rated voltage) | ms | ≤50 | ||||
15 | Closing time(rated voltage) | ≤60 | |||||
16 | Mechanical life | Time | 20000 | ||||
17 | Breaking times of rated current (electrical life) | 20000 | |||||
18 | Number of breaks of rated short circuit current | 50(40kA≤30) | |||||
19 | Kinematic and static contacts allow wear accumulative thickness | mm | 3 | ||||
20 | Rated closing operating voltage | V | AC110/220 DC110/220 | ||||
21 | Rated switching operating voltage | ||||||
22 | Rated voltage of energy storage motor | ||||||
23 | Rated power of energy storage motor | W | 70 | ||||
24 | Energy storage time | S | ≤10 | ||||
25 | Contact opening distance | mm | 11±1 | ||||
26 | Overstroke | 3.5±0.5 | |||||
27 | Contact closing bounce time | Ms | ≤2(40kA≤3) | ||||
28 | Three -phase switching and closing are different | ≤2 | |||||
29 | Average opening speed | m/s | 1.1±0.2 | ||||
30 | Average closing speed | 0.6±0.2 | |||||
31 | Main circuit resistance (fixed/hand) | μΩ | ≤45/60(630A)≤40/55(1250A) | ||||
32 | Contact closing contact pressure | N | 2000±200(20kA)2400±200(25kA) | ||||
33 | Rated operation sequence | Opening -0.3s(18OS)-Opening and closing | |||||
Utility Grids: Provides reliable protection for distribution substations, ensuring uninterrupted power supply to residential and commercial areas. Its fast fault interruption capability minimizes the impact of outages on critical infrastructure.
Industrial & Mining Operations: Withstands harsh industrial environments including vibration and temperature fluctuations, protecting motors, pumps, and conveyor systems from electrical faults and reducing unplanned downtime.
Power Generation Facilities: Safeguards generators, transformers, and auxiliary equipment, maintaining stable operation of power plants and preventing cascading failures.
Commercial & Institutional Buildings: Ensures safe and reliable power distribution for hospitals, data centers, and large commercial complexes where uninterrupted power is essential.
All our VS1 vacuum circuit breakers are manufactured under strict quality control standards, undergoing rigorous testing before shipment. We provide comprehensive technical support throughout the product lifecycle, from initial consultation to after-sales service. With a minimum order quantity of 1 piece and flexible lead times for standard and custom models, we can accommodate projects of all sizes.
The handcart type is withdrawable, allowing for easy maintenance and replacement without powering down the entire system. The fixed type is permanently installed, offering a more compact and cost-effective solution for applications where frequent maintenance is not required.
Standard models are designed for altitudes up to 1000m. For higher altitudes, our engineering team can provide customized solutions with enhanced insulation performance to meet your specific requirements.
We provide a standard 1-year warranty against manufacturing defects. Extended warranty options are available upon request to further protect your investment.
Ready to find the right VS1 vacuum circuit breaker for your project? Contact our sales team today for a detailed quotation and personalized technical support.
