Metal-Enclosed Switchgear
High Safety & Internal Arc Protection: Fully metal-armored structure with complete internal arc fault resistance (up to 40kA/1s) and strict compartmental isolation ensures maximum operational safety.
Reliable Interlocking System: Equipped with a complete five-interlock protection system to effectively prevent misoperation and allow safe operation even with the door closed.
Flexible & Easy Maintenance Design: Compact modular structure with double-sided maintenance enables convenient installation, operation, and long-term servicing.
Intelligent Monitoring & Control: Supports integration of smart components for real-time monitoring, remote control, and full lifecycle management, improving efficiency and reliability of power systems.
KYN28-12 Armored Metal-Enclosed Switchgear
The KYN28-12 armored metal-enclosed switchgear is suitable for three-phase AC 50Hz, 3.6–12kV single busbar and single bus sectionalized power systems. It is used for receiving and distributing electrical energy, as well as for control, protection, and monitoring of circuits.
The KYN28-12 switchgear is designed to be fully resistant to internal arc faults, with a maximum seismic resistance rating of AG5 (seismic intensity 9). It features a complete five-interlock protection system, fully complying with the requirements of State Grid and China Southern Power Grid. The optimized heat dissipation channels ensure both internal arc resistance and safe operation. The product has passed type tests conducted by national authoritative testing institutions.
Advantages & Features
Metal-armored and fully enclosed structure effectively prevents the spread of faults.
Complete separation between high-voltage and low-voltage compartments ensures enhanced safety.
Double-sided maintenance design with compact structure for easy installation and servicing.
Modular circuit breaker design with simple structure, high reliability, and long service life.
Complete five-interlock protection system prevents misoperation and allows operation with the door closed.
Fully internal arc fault-resistant design, up to 40kA/1s.
Designed and manufactured in accordance with Chinese national and international standards, and has passed full type tests.
Compatible with various main switching devices, such as vacuum circuit breakers, vacuum contactors, and withdrawable load switch units.
Optional motorized operation modules enable remote control of circuit breakers and earthing switches.
Intelligent components can be integrated to realize real-time monitoring of breaker mechanical characteristics, one-click sequential control, visualized operation, temperature, partial discharge, etc. The system automatically collects, stores, and analyzes comprehensive equipment data, enabling power monitoring, energy management, and health condition assessment, thereby enhancing full lifecycle management of the switchgear.
Technical Parameters
Rated Insulation Voltage: 12 kV
Rated Power Frequency Withstand Voltage: 42 kV / 1 min
Rated Lightning Impulse Withstand Voltage: 75 kV
Rated Frequency: 50 Hz
Rated Short-Time Withstand Current: 50 kA / 4 s
Rated Peak Withstand Current: 125 kA
Rated Busbar Current: up to 5000 A
Internal Arc Withstand Current: 40 kA / 1 s
Protection Degree: IP4X
Impact Resistance Level: IK10
Dimensions & Weight
Dimensions (W × D × H, excluding front and rear doors):
650 (800 / 1000 / 1200) × 1450 (1500 / 1750 / 1800) × 2360 mmWeight: 800–1800 kg
* Switchgear with rated current of 3150A and above requires forced air cooling.
** The thermal stability and dynamic stability current of current transformers are related to the transformation ratio. Please consult the manufacturer when placing an order.
Project Portfolio
Operating across over 20 countries and regions, we provide complete sets of medium and low voltage electrical switchgear for various construction projects. We adhere to the principle of “Expert Manufacturing, Customer-Focused Service,” and uphold values of honesty, innovation, safety, and mutual success, striving to serve global clients with superior solutions.
About Us
We have a 36,000 m² manufacturing facility and a professional team of 200 employees, focusing on complete medium and low voltage switchgear (0.22kV–35kV), including development, production, sales, and power engineering installation and renovation. Serving industries such as real estate, industrial projects, sports venues, and medical institutions, we emphasize fast, stable production and strict quality management.
FAQ
What types of complete electrical switchgear can your company provide?
We can supply low-voltage and medium-voltage complete electrical switchgear ranging from 0.22kV to 35kV.
Are you a manufacturer or a trading company?
We are a professional manufacturer with our own complete production lines and processing workshops.
What is your minimum order quantity (MOQ)?
Our MOQ is very flexible. Trial orders and small batch orders are welcome.
Do you offer customization services?
Yes, we can customize complete electrical switchgear according to your drawings and specific electrical design requirements.
What certifications do your products have?
Our products are certified with CB, ISO9001, CCC, and other mainstream international certifications.
What is your typical production lead time?
Usually, it takes about 15 to 25 days after receiving the deposit and confirming the drawings.
