Wenzhou Kinee Electrical Co., Ltd. is one of the most reliable manufacturers and suppliers of over/under voltage ac switching distribution box in China. We warmly welcome you to wholesale over/under voltage ac switching distribution box for sale here from our factory. All customized products are with high quality and competitive price.
Product Introduction
This product's distribution box is mainly used for switching between two power sources: mains power to photovoltaic power, mains power to generator power, and photovoltaic power to generator power. It is suitable for overload and short-circuit protection in lighting distribution systems or squirrel-cage motor distribution systems with AC 50Hz (60Hz), rated operating voltage of 230V, and rated operating current up to 63A. It can also be used for infrequent switching of circuits under normal conditions. It features overvoltage, undervoltage, and overcurrent protection, as well as a highly reliable independent automatic fire extinguishing device. The product is applied in homes, hotels, apartments, and other places to achieve automation functions.

Technical Parameters
|
Parameter Item |
Technical Specification |
|
Product Model |
HA 12WAY (KINEE Brand) |
|
Rated Frequency |
AC 50Hz / 60Hz |
|
Rated Operating Voltage |
AC 230V |
|
Rated Operating Current |
≤63A |
|
Protection Functions |
Overload protection, short circuit protection, over-voltage protection, under-voltage protection, over-current protection |
|
Core Functions |
Dual power automatic transfer (switching between any two sources: mains / PV / generator), infrequent manual line switching |
|
Key Safety Features |
Built-in independent automatic fire suppression device, digital voltage & current monitoring module |
|
Enclosure Structure |
Outdoor waterproof PC plastic enclosure, transparent visible door, waterproof cable glands, silicone sealing gasket |
|
Applicable Load Types |
Civil lighting circuits, squirrel-cage motor power circuits |
|
Installation Scenarios |
Residential rooftop PV systems, hotels, apartments, small commercial backup power systems |
|
Safety Certification |
CE Certified |
Feature
|
Feature |
Description |
|
Comprehensive Electrical Protection |
Integrates over-voltage, under-voltage, over-current, overload and short-circuit protection; automatically trips and cuts off power when voltage or current abnormalities occur, ensuring the safety of downstream loads and upstream power sources. |
|
Fully Automatic Dual Power Transfer |
Two power sources serve as mutual backup; when the main power supply loses voltage or fails, the device automatically switches to the standby power source without manual intervention, ensuring uninterrupted power supply. |
|
Built-in Independent Automatic Fire Suppression |
Equipped with a highly reliable independent fire suppression module inside the enclosure; automatically activates to extinguish fire in the event of short circuits or overheating of internal electrical components, preventing the spread of electrical fires. |
|
Outdoor Waterproof Enclosure |
Transparent visible door with a sealed rubber ring waterproof structure and side-entry waterproof cable glands; suitable for installation in outdoor environments and humid indoor areas. |
|
Integrated Digital Monitoring Module |
Circuit breakers inside the enclosure are paired with a digital display, allowing real-time and intuitive viewing of circuit voltage and current operating parameters for convenient operation and maintenance. |

Product Advantages Summary
Integrated Design: Dual power transfer switches, circuit breakers, monitoring instruments, and automatic fire suppression systems are integrated into a single waterproof enclosure, allowing for one-step procurement and installation without the need for assembling scattered parts.
Uninterrupted Power Supply: Fully automatic power switching logic allows for automatic backup between any two power sources (PV, AC, and generator), ensuring seamless switching during power outages.
High Safety Redundancy: Multiple electrical protections plus an independent built-in fire suppression system provide dual fire protection, significantly reducing the risk of electrical fires in PV and self-generated power generation scenarios.
Outdoor All-Weather Adaptability: The fully sealed waterproof enclosure allows for installation on balconies, near outdoor PV brackets, and in damp basements.
Intuitive and Convenient Maintenance: A digital display screen monitors electrical data in real time, and a transparent door allows for quick identification of switch on/off status, resulting in higher maintenance efficiency.