Product Overview
Compact Outdoor Vacuum Circuit Breaker from a Reliable Manufacturer and Factory Supplier
The ZW20-12 outdoor vacuum circuit breaker provides efficient, reliable protection for 12kV distribution lines. With ratings of 630 amps and 1250 amps, breaking capacities up to 25kA, it is suitable for various kinds of feeders and the vacuum interrupter ensures minimum maintenance requirements.
Applications & circuit protection
This switch is appropriate for outdoor distribution lines, stations located on poles, as well as substations where service interruption and less need for maintenance are most critical.
- Distribution lines: 12kV line sections protection.
- Stations on poles: Efficient protection in simplification of the architecture.
- Substations: Protection of outgoing feeders.
- Industrial supply: Reliable circuit protection.
Construction & operating reliability
The ZW20-12 utilizes a vacuum interrupter and employs outdoor insulation and a compact design ensuring dependable operation in difficult conditions.
- Clean and reliable electric arc extinguishing provided by a vacuum interrupter.
- High feature ratings ranging from 630A to 1,250A allowing for a breaking current of between 20kA to 25kA.
- Peak withstand current ratings of up to 63kA.
- Type of installation: outdoor pole-mounted.
- Maximum mechanical endurance of 10,000 cycles.
Technical Parameter
| Parameter | Value |
| Rated voltage | 12 kV |
| Rated frequency | 50 Hz |
| Rated current | 630 / 1250 A |
| Rated short-circuit breaking current | 20 / 25 kA |
| Rated peak withstand current | 50 / 63 kA |
| Power-frequency withstand (1 min) | 42 kV |
| Lightning impulse withstand | 75 kV |
| Mechanical life | 10,000 operations |
| Standard | IEC 62271 / GB 1984 |
Circuit Breaker Price & Factory Quote
The cost of breakers depends on the rating of voltage, current, breaking capacity, mechanism of operation, and the amount of order. As a manufacturer, we have reduced Outdoor Vacuum Circuit Breaker price for the distributors and their business projects on a volume basis.
- Standard samples are taken from the price list supplied by the manufacturer.
- Special mechanisms or CT options get a separate quotation.
- Container price applies to bulk orders.
Breaker Wiring & Control Connection
Power terminals link the circuit breaker to the electrical circuit, while the control terminal gets the commands to open/close the circuit and is made of auxiliary contacts. The Outdoor Vacuum Circuit Breaker is accompanied by specific wiring diagrams along with terminal markings.
- The main terminals are marked per the drawings
- The control circuit is pre-equipped with wires and checked
- Auxiliary contacts are supplied with indicators.
Compare Breaker Options
Select the right breaker for your duty:
| Feature | This Breaker | Alternative |
| Voltage | As specified | Other classes available |
| Breaking | Per model | Higher breaking on request |
| Mechanism | Spring / magnetic per model | Manual or motor operation |
| Mounting | Indoor / outdoor per model | Pole or panel mounting |
Export Markets & Country Compatibility
The Outdoor Vacuum Circuit Breaker is delivered to the wholesalers and distributors in various regions such as Southeast Asia, Middle East, Africa, Latin America, and South Asia. Specifications, mode of operation, and certification match the market of destination.
Breaker Dimensions, Weight & Packing
The size and weight of the circuit breaker are determined by its voltage class and mechanism. Breakers intended for outdoor use are made to be compact and lightweight to facilitate their installation. However, breakers designed for indoor use are available in preassembled condition ready for fitting into the panel. Sizes and weights are given per order drawings.
- Sizes specified in model drawing
- Mechanism locked and poles protected for shipment
- Mounting accessories are provided
Standards & certifications
The ZW20-12 is produced according to IEC 62271 and GB 1984; hence, we can provide type-test reports to the utility.
- Design standard: IEC 62271 / GB 1984.
- Use of vacuum circuit breaker technology.
- Verified outdoor insulation level.
- Confirmed breaking capacity at certain ratings.
OEM & B2B supply support
Subian Electric is a vendor of outdoor VCB equipment and expert in giving technical assistance to utilities, EPC contractors, and distributors.
To know more about other types of outdoor circuit breakers, you may send your specifications and quantity.
- Samples are available for testing.
- We do different quantities of products for projects and B2B purchases.
- You may also ask for OEM/ODM.
- Product custom marking and packaging is available.
- Tech support is available.
Frequently Asked Questions
What is the ZW20-12 used for?
The ZW20-12 has been used mainly to protect the circuits which are rated with 12kV voltages and have load capacities up to 1250 amps or breaking capacities rating up to 25kA.
What ratings are available?
The ZW20-12 is available with ratings which include either 630 and 1250 A of current and breaking capacity of 20kA and 25kA.
Is it low maintenance?
Yes, it has an inbuilt vacuum interrupter that eliminates the operation of arc maintenance.
Can I order for utility projects?
Yes, the company provides utility companies, EPC contractors and distribution agencies with samples, documents which are required and with flexible quantities of orders.
