Product Overview
Withdrawable Metal-Clad Switchgear from a Professional Factory in China
The KYN28A-12 metal-clad withdrawable switchgear is designed to provide power distribution in power plants, small and medium-sized generators, industrial distribution, and secondary substations. It complies with GB/T 11022, GB/T 3906 and other relevant standards. It is designed with various interlocks to avoid the occurrence of unsafe operations.
Applications & circuit protection
The KYN28A-12 switchgear is responsible for monitoring, controlling, and protection of 12kV applications in generation as well as in distributions.
- Power plants: For distribution of generators and auxiliary.
- Substations: For receiving and transmitting energy.
- Industrial plants: For the distribution of building MV power.
- Motor starting: For the control of large motors.
Construction & operating reliability
The construction of the enclosure is equipped with circuit breakers that can be disengaged when necessary and provides safe operation and easy maintenance.
- Design of withdrawable breaking vacuum circuit.
- Compatible with ZN63A-12 and Vd4 switchgears.
- Complete five-level interlocking protection.
- Enclosure is metal-clad and can be used for generators, distribution and motors.
Technical Parameter
| Parameter | Value |
| Rated voltage | Three-phase AC 12 kV |
| Rated frequency | 50 Hz |
| Application | Power plants, substations, industrial distribution |
| Breaker compatibility | ZN63A-12 / Vd4 vacuum circuit breaker |
| Interlocking | Five-fold safety interlocking |
| Mounting | Indoor metal-enclosed |
| Standard | GB/T 3906 / GB/T 11022 |
Switchgear Price & Factory Quotation
Switchgear cost relies on the setup of the panels, amperage of the busbars, type of switches used, and protection relays utilized. Being the manufacturer, we price the Metal-Clad Switchgear directly from the factory price list, with volume pricing available for distributors and project orders.
- Base price from factory price list for standard panels
- Custom price for busbars, relays, or layout work calculated per job
- FOB / CIF terms available
Switchgear Wiring & Cable Connection
The Metal-Clad Switchgear panel comes with busbars, cable connection points, and a wiring diagram. The incoming and outgoing cables directly connect to the marked terminals; secondary wiring for protection and indication is loomed and tested prior to delivery.
- Cable entries built according to approved layout
- Secondary wiring tested as per schematic
- Earthing bus and connection points given
Compare Switchgear Configurations
Select the configuration that fits your project:
| Feature | This Panel | Alternative |
| Voltage | As specified | Other MV/LV classes available |
| Current | Per model | Higher or lower rated current |
| Mounting | Fixed / withdrawable per model | Ring main or feeder arrangement |
| Protection | Per project relay scheme | Custom protection functions |
| Best for | Distribution and control | Substation or industrial feeders |
Export Markets & Country Compatibility
Electrical Switchgear is being distributed in industrial and distribution projects throughout Southeast Asia, the Middle East, Africa, Latin America and South Asia. The switchgear is configured to the electrical voltage, frequency and protection standards of the relevant destination country.
Panel Dimensions, Weight & Packing
The size and weight of the panel are based on its design and ampacity. Typical LV cabinets measure around 600-1000 mm in width, 600-1000 mm in depth, and 1800-2200 mm in height, while MV units’ dimensions depend on the switchgear design. The indicated dimensions and weight are backed by the approval drawings, while the units are delivered in an upright manner for transport.
- Approval drawings contain dimensions and weight
- Alternatives were packed upright with busbars protection
- Means of lifting and transporting were identified in the order
Standards & certifications
The switchgear is manufactured according to GB/T 3906 and GB/T 11022, and can be provided with documentation regarding type tests for the project approval process.
- Standards used in its design include: GB/T 3906 and GB/T 11022.
- Interlocking systems have been tested.
- Type-testing reports are available.
- Information for project approval is included.
OEM & B2B supply support
The electric power equipment manufacturer and supplier Subian Electric supplies medium voltage switchgears to power plants, utility companies, and industrial customers, giving them technical assistance as well.
If you have some precise breaker or configuration requests, please get in touch with us and provide your specifications and quantities.
- Samples and drawings are available.
- Flexible quantities for any project orders.
- OEM/ODM support is available.
- Marking and/or packaging customized according to your needs.
- Technical and certification documentation provided.
Frequently Asked Questions
What is KYN28A-12 switchgear?
The KYN28A-12 switchgear is a type of metal clad withdrawable switchgear designed for use at 12kV, 50Hz with withdrawal circuit breakers.
What breakers can be used?
The switchgear is suitable for use with ZN63A-12 vacuum breakers of our factory and Vd4 type breakers manufactured by ABB.
What safety features does it have?
The KYN28A-12 switchgear contains complete five-fold interlocking that ensures that the operations of withdrawal of breakers under load and closure of earth switches in live circuit cannot be performed.
Where is it commonly used?
This type of switchgear is used in power generation stations, substations, manufacturing and mining industries and for motor starting of large systems.
