VS1-12E Indoor High-Voltage Vacuum Circuit Breaker – Solid-Encapsulated Pole
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Product Description
Product Overview
The VS1-12E solid‑encapsulated pole-mounted indoor high‑voltage vacuum circuit breaker is an indoor switchgear designed for 50 Hz, 12 kV rated voltage three‑phase AC power systems. It serves as a protective and control unit for grid equipment and power equipment in industrial and mining enterprises. This device is suitable for frequent operations under rated working current or for applications requiring multiple interruptions of short‑circuit currents. Its vacuum arc extinguishing chamber is integrally cast within the pole, providing superior insulation performance.
This circuit breaker features an integrated design that combines the operating mechanism with the circuit breaker body. It can be used as a fixed installation unit and, when equipped with interlocking devices, meets the requirements of fixed switchgear such as XGN2 and GGIA. Alternatively, it can be fitted with a manual drawer‑operating mechanism to form a hand‑cart unit for use in KYN28 middle‑mounted switchgear.
The circuit breaker can be equipped with an electric chassis to meet the requirements for one‑click sequential control, and is suitable for use in unmanned, intelligent substation construction projects.
Product Model and Meaning
Terms of Use
1. Ambient air temperature: -15°C ~ +40°C;
2. Wind speed ≤ 35 m/s;
3. Altitude ≤ 2000 m;
4. Seismic intensity ≤ 8 degrees;
5. Environmental Humidity: Monthly average relative humidity ≤ 90%; daily average relative humidity ≤ 95%.
6. The installation location should be free from flammable, explosive, chemically corrosive substances and frequent, severe vibrations.
Note: For conditions beyond the above-mentioned normal operating environment, please consult with the manufacturer.
Main Features
1. The VS1-12E high-voltage vacuum circuit breaker has its main components housed within a solid‑encapsulated pole made of epoxy resin cast using the APG process. This design effectively protects the vacuum arc extinguishing chamber from external factors such as mechanical impacts and environmental contamination.
2. The circuit breaker is equipped with a ceramic vacuum arc extinguishing chamber featuring an R‑type contact structure that is protected by an international patent, eliminating arc‑initiating grooves. It boasts strong breaking capacity, low current chopping levels, and a long electrical life.
3. The vacuum arc extinguishing chamber is housed within a solid‑encapsulated pole, giving the circuit breaker maintenance‑free operation, zero pollution, no risk of explosion, low noise, and high insulation levels.
4. The mechanism and the main body are integrated front to back, offering high transmission efficiency and excellent operational performance, making it suitable for frequent operations and capable of being installed in withdrawable or fixed switchgear.
5. This vacuum circuit breaker features stable operational performance, high breaking capacity, a reasonable design, and convenient secondary wiring, making it highly suitable for power grid operation in China.
Main Technical Parameters
Serial Number | Name | Unit | Data |
1 | Rated Voltage | kV | 12 |
2 | 1-minute power frequency withstand voltage (RMS) | kV | 42 |
3 | Rated Lightning Impulse Withstand Voltage (Peak) | kV | 75 |
4 | Rated Frequency | Hz | 50 |
5 | Rated current | A | 630 1250 1600 2000 2500 3150 4000* |
6 | Rated short-time withstand current | kA | 20 25 31.5 40 50 |
7 | Rated Peak Withstand Current | kA | 50 63 80 100 125 |
8 | Rated short-circuit breaking current | kA | 20 25 31.5 40 50 |
9 | Rated Short-Circuit Making Current (Peak) | kA | 50 63 80 100 125 |
10 | Rated Operating Sequence |
| 0-0.3s-C0-180s-C0 |
11 | Rated short-circuit duration | S | 4 |
12 | Break time | ms | <75 |
13 | Rated Capacitor Bank Interrupting Current | A | 630/400 |
14 | Rated Short-Circuit Breaking Current Number of Operations | Next | 30 |
15 | Mechanical life | Next | 30000 |
16 | Rated Operating Voltage | V | AC/DC 110 AC/DC 220 |
Ordering Instructions
Users should specify when placing an order.
a. Circuit breaker model, name, and ordered quantity;
b. The circuit breaker’s rated voltage, rated current, and rated short-circuit breaking current;
c. Rated operating voltage;
d. Names and quantities of spare parts and components;
e. If users have any other special requirements, they may specify them when placing an order.
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VS1-12E Indoor High-Voltage Vacuum Circuit Breaker – Solid-Encapsulated Pole
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East of the 22nd Avenue and south of Fengda Road, Zhengzhou Economic and Technological Development Zone
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