Introducing the KYN28A-12/24(Z) indoor AC metal-clad switchgear, a versatile powerhouse known as the cabinet. It operates seamlessly within a voltage range of 3.6-24KV for three-phase AC 50HZ single busbar systems and single busbar segmentation systems. This comprehensive power distribution marvel is specially designed for power plants, substations, industrial and mining enterprises, high-rise buildings, and various other environments. It excels in power reception and distribution, circuit control, protection, and monitoring, ensuring robust performance and reliability across all applications.
Our product's circuit breaker features a middle mounting mode, offering unparalleled flexibility. Choose between the VS1 (ZN63A) type or VD4 type vacuum circuit breakers, and accommodate a wide array of vacuum circuit breakers from both domestic and international specifications and models, ensuring you find the perfect fit for your needs.
Adhering to the highest standards: GB3906-2006 '3.6kV~40.5kV AC metal-enclosed switchgear and control equipment,' DL404-2007 'Indoor AC high-voltage switchgear ordering technical conditions,' and IEC298 (1990) 'Rated voltage above 1KV and below 5CKV AC metal-enclosed switchgear and control equipment.'
>>>>Main Technical Parameters |
|
sports event |
unit |
|
|
Rated voltage |
kV |
7.2,12,24 |
Rated frequency |
Hz |
50 |
Rated current |
A |
630,1250,1600,2000,2500,3150,4000 |
4S Thermal stability current |
kA |
16,20,25,31.5,40,50 |
Rated dynamic stability current (peak) |
kA |
40,50,63,80,100,125 |
Rated short-circuit breaking current |
kA |
16,20,25,31.5,40,50 |
Rated short-circuit closing current (peak) |
kA |
40,50,63,80,100,125 |
Rated insulation level 1min frequency withstand voltage |
kV |
32 42,65 |
kV |
60,75,125 |
Rated operation sequence |
|
0-0.3S-C0-180S-CO |
Rated short-circuit breaking current |
the second |
50 |
Mechanical life time |
the second |
20000 |
Contact opening distance |
mm |
11±1 |
Overtravel |
mm |
4±0.5 |
Centre distance between phases |
mm |
210,275 |
Bouncing time of closing contact |
mS |
≤2 |
Three-phase switching non-simultaneous |
mS |
≤2 |
Breaking time (when operating force is applied) Max. |
ms |
≤50 |
ms |
≤50 |
ms |
≤60 |
Closing time |
ms |
≤100 |
Average opening speed |
m/s |
0.9~1.2 |
Average closing speed |
m/s |
0.6~0.8 |
protection class |
|
P4X(When the breaker compartment door is openIP2X) |
Product Advantages:
Endorsed by leading authorities: ISO, CE, CCC, and more.
- Cutting-edge SQA quality management system guarantees exceptional product quality.
- Enjoy rapid quotation services, complete with detailed electrical design offerings.
- Experience swift delivery timelines, with global dispatch in as little as 10-15 days.
- Our comprehensive after-sales service system ensures a worry-free purchase experience.
- We invite you to visit our factory and offer OEM/ODM services for personalized guidance.

Q: Are you a manufacturer, factory, or trading company?
A: Indeed, with over two decades of expertise, we specialize in the development, production, and operation of power distribution equipment, including transformers, switchgear, and substations.
Q: How can I place an order?
A: Request a quotation from us → Customize with drawings and samples → Inform us of usage scenarios → Receive our product design recommendations → Negotiate details → Confirm samples → Sign a contract and make a deposit → Begin mass production → Prepare goods → Balance payment and delivery → Further cooperation.
Q: What shipping methods are available?
A: We provide shipping via Ocean Express, China Express, and various other express routes. For alternative shipping methods, please contact us for further arrangements.
Q: How can I trust your company?
With numerous patent certificates, ISO9001, and ISO14001 certifications, our products are widely trusted globally. As an audited diamond supplier on Made in China, we are committed to delivering high-quality products at competitive prices.
Q: What are the delivery timelines for production and shipment?
A: Delivery timelines vary based on order quantity, typically within 15 days after receipt of prepayment.
Q: Can your products be customized?
A: Absolutely. We can tailor our transformer products to meet your specific needs, considering the diverse voltage, frequency, and other specifications across different regions.
Our products can be customized according to your requirements.
Q: How can I confirm the payment?
A: We accept wire transfers and PayPal, among other payment methods. Prior to using alternative methods, please contact us. A feasible 20-30% deposit is required, with the balance payable before installation.