Technical Parameters |
Value |
Rated Short-Time Withstand Current |
25kA (4s) |
Rated Short-Circuit Making Current (Peak) |
63kA |
Busbar Dynamic Stability Current |
80kA |
Busbar Thermal Stability Current |
25kA |
Circuit Breaker Mechanical Life |
10000 times |
Circuit Breaker Electrical Life |
5000 times |
Earthing Switch Short-Time Withstand Current |
25kA |
Earthing Switch Peak Withstand Current |
63kA |
Protection Level |
Shell IP4X, Circuit breaker chamber door open IP2X |
Product Description
The KYN28 indoor metal-armored, withdrawable switchgear represents a masterful blend of cutting-edge engineering and practical functionality. Engineered for seamless incorporation into power plant transmissions, advanced power systems, and substations across industrial and mining sectors, it excels in the efficient reception, distribution, control, and protection of power. Beyond these core functionalities, it is exceptionally suited for high-voltage motor initiations, adhering stringently to the 'five prevention' interlocking standards. This adaptable switchgear is compatible with the globally esteemed ABB VD4 vacuum circuit breaker or the domestically recognized VS1 vacuum circuit breaker, ensuring superior performance. Its flexible scheme configurations are underscored by its compact and durable design, offering an ideal combination of safety, reliability, ease of maintenance, and excellent resistance to both impact and corrosion. This makes it an indispensable asset in the realm of power distribution.
Distinctive Product Features
- The design is fortified with a robust metal-clad structure, ensuring unmatched protective capabilities.
- Incorporates an advanced interlocking mechanism designed to effectively prevent operational errors with precision.
- Internally, the spatial arrangement is thoughtfully designed to facilitate effortless component installation and optimal wiring convenience.
- Features an outstanding sealing system on the cabinet door, highly effective in preventing dust and moisture ingress.
- Engineered to perform flawlessly across a broad spectrum of challenging operating environments.
Comprehensive Application Scope
With an expansive range of applications, this switchgear is an indispensable asset in power plants, substations, and industrial and mining enterprises. It serves as the preferred solution for power distribution, complex control operations, and robust protection.
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FAQ

Q1:
Are we a manufacturer or a trading company?
A1:With 16 years of expertise, we specialize in the design and production of high and low voltage switchgear, distribution cabinets, and distribution boxes.
Q2:How to purchase?
A2:Reach out to us with your inquiry → provide drawings, requirements, and customization needs → inform us of your usage scenarios → receive our expert product design suggestions → negotiate details → confirm sample → sign contract/deposit → mass production → goods ready → balance payment/delivery → initiate further cooperation.
Q3:About OEM/ODM?
A3:Absolutely! 1. We can customize any product to your exact specifications. 2. We offer comprehensive design solutions to meet your needs.
Q4:What about sample acquisition?
A4:For standardized styles, we will send you a sample. You will be charged for the sample price plus all associated shipping costs, which depend on the number of samples.
Q5:What about MOQ?
A5:Our minimum order quantity is just 1 piece.
Q6:What about the time limit for getting a quote?
A6:Typically, we provide a quotation within 24 hours after receiving your inquiry and confirming the technical details.
Q7:What about the delivery time?
A7:Delivery time varies by product demand and quantity. Usually, after receiving the deposit, it takes 10 to 30 working days. We will confirm based on the actual situation.
Q8:
What about the shipping method?
A8:
Yes, sea freight is our standard; however, we offer other shipping methods as well. For alternative routes, please contact us.
Q9:
What about quality and warranty?
A9:
Within 24 months from the delivery date (typically 12 months in the industry), if any accessories have issues, simply provide photos of the damaged parts, and we will supply free replacements. We also offer free wearing parts depending on the quantity purchased and technical support upon request.
Q10:
What about payment methods?
A10:
a. 30% T/T in advance as deposit ,balanced against the shipping documents
b. irrevocable L/C at sight for order which amount is over 100 thousand USD
C. for old business partner,we can negociate together for other special terms