The KYN28A-12/24(Z) indoor AC metal-clad switchgear, commonly known as the cabinet, is a versatile and robust power distribution solution. Operating within a voltage range of 3.6-24KV for three-phase AC 50HZ single busbar systems and single busbar segmentation systems, it stands out in various applications. This high-performance equipment is an essential choice for power plants, substations, industrial and mining enterprises, high-rise buildings, and numerous other locations. It excels in power reception and distribution, circuit control, protection, and real-time monitoring, ensuring optimal performance and reliability.
Our product's circuit breaker is ingeniously designed with a middle mounting mode, providing unparalleled flexibility. Clients can select between the highly reliable VS1 (ZN63A) type or VD4 type vacuum circuit breakers. Furthermore, it supports a diverse range of vacuum circuit breakers from both domestic and international brands, accommodating various specifications and models to meet the most demanding requirements.
Adherence to Standards: Our switchgear complies with the highest industry standards, including 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.' This ensures that our products deliver exceptional safety, reliability, and performance.
>>>>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:
Certified by Authoritative Bodies: With certifications from ISO, CE, CCC, and more, our products meet the highest international standards.
- Unmatched Quality Assurance: Our state-of-the-art SQA quality management system ensures each product meets top-tier quality standards.
- Swift Quotation Services: Receive rapid quotations along with comprehensive electrical design offerings, tailored to your specific needs.
- Expedited Delivery: Benefit from our fast delivery timelines, with global shipping available in as little as 10-15 days.
- Exceptional After-Sales Support: Our comprehensive after-sales service system guarantees a seamless and worry-free purchase experience.
- Personalized OEM/ODM Services: We invite you to visit our factory and offer customized OEM/ODM services for tailored solutions and expert guidance.

Q: Are you a manufacturer, factory, or trading company?
A: Yes, with over two decades of unparalleled experience, Jiangxi Bolian Electrical Co., Ltd. specializes in the innovation, production, and operation of world-class power distribution equipment, encompassing transformers, switchgear, and substations.
Q: How can I place an order?
A: Simply follow these steps: Request a quotation from us → Customize with detailed drawings and samples → Inform us of your specific usage scenarios → Receive our expertly tailored product design recommendations → Navigate the negotiation process → Confirm samples → Sign a contract and make a deposit → Begin mass production → Prepare goods for shipment → Make the balance payment and receive your delivery → Discuss further cooperation opportunities.
Q: What shipping methods are available?
A: We provide comprehensive shipping options via Ocean Express, China Express, and other established express routes. Should you require alternative shipping arrangements, our team is ready to assist you with customized solutions.
Q: How can I trust your company?
A: Our credibility is fortified by numerous patent certificates and ISO9001, ISO14001 certifications. Our products are globally recognized and trusted, and we hold the esteemed status of an audited diamond supplier on Made in China. We are dedicated to offering superior quality products at competitive prices.
Q: What are the delivery timelines for production and shipment?
A: Delivery timelines depend on order quantities, typically ensuring shipment within 15 days post receipt of prepayment for streamlined and efficient service.
Q: Can your products be customized?
A: Absolutely! We recognize the diverse voltage, frequency, and specifications required across different regions. Therefore, we offer tailored transformer products to meticulously meet your exact needs and preferences.
Our products can be meticulously customized according to your specific requirements.
Q: How can I confirm the payment?
A: We accept wire transfers and PayPal, among other secure payment methods. For other payment arrangements, please contact us prior to making a transaction. Typically, a feasible 20-30% deposit is required, with the balance payable before installation.