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——Juhonkia Electric
Environmentally friendly and
efficient, intelligent monitoring
——Inflatable cabinet, a smart choice for future power grids
——Small stature, great wisdom
Ring main unit
Bringing agility and intelligence to
urban power grids
——Intelligent integration, security upgrade
Pole mounted circuit breaker
Quality control for a safe and secure future
One-stop power solution
From high voltage to low voltage, making energy management easier
Our Advantage
Zhejiang Juhonkia Intelligent Electric Co.,Ltd
Has a CNAS accredited laboratory
Has a CNAS accredited laboratory
It has a CNAS accredited laboratory, a smart quality control brain, and a shared laboratory...
R&D institutions and corporate research institutes
R&D institutions and corporate research institutes
It has multiple specialized R&D institutions and corporate research institutes, and its products have independent...
Multiple product categories, complete specifications, and intelligent equipment
Multiple product categories, complete specifications, and intelligent equipment
Leading the domestic leading level, digital workshops, intelligent factories...
There is always a ring main unit suitable for you,
and we can provide customized services according to your special requirements.
It has a CNAS accredited laboratory, a smart quality control brain, and a shared laboratory...
OEM/ODM
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Our Products

JSR6-12/24 SF6 gas-insulated metal-enclosed ring main unit
JSR6-40.5 SF6 gas-insulated metal-enclosed ring main unit
GSR6-27.5 SF6 free gas-insulated metal-enclosed switchgear (C-GIS)
GSR6-12 SF6 free gas-insulated metal-enclosed switchgear (C-GIS)
Our Products
Applications

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Case presentation

Hangzhou Metro
Wind power
PV
Airport
Three Gorges of the Yangtze River
News Center

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News information

Pole-Mounted Circuit Breaker Installation: Key Requirements and Safety Considerations

2026/09/04 00:09:30

Pole-Mounted Circuit Breaker Installation: Key Requirements and Safety Considerations
Installing a pole-mounted circuit breaker is not only a lifting and wiring task. It is a coordinated process involving a recloser, medium-voltage distribution, pole-top switchgear, protection settings, grounding, and safe work procedures. A correct installation improves feeder reliability, reduces outage time, and protects workers and equipment. This guide explains the main installation
Ring Main Unit for Solar and Wind Power Projects: What Should You Consider?

2026/09/04 00:09:32

Ring Main Unit for Solar and Wind Power Projects: What Should You Consider?
Solar and wind farms need reliable medium-voltage switching between generators, transformers, and the utility grid. A Ring Main Unit for Solar and Wind Power Projects helps operators isolate faults, protect transformers, and restore service without shutting down an entire collector circuit. When comparing a ring main unit for solar power projects, engineers should review voltage, current,
How to Select the Rated Current and Short-Circuit Capacity of LV Switchgear

2026/09/03 00:10:24

How to Select the Rated Current and Short-Circuit Capacity of LV Switchgear
Selecting the correct switchgear rating is easier when we follow a controlled engineering process: calculate the design current, apply derating factors, determine the prospective short-circuit current, and verify the assembly against IEC 61439. In this guide, I explain How to Select the Rated Current and Short-Circuit Capacity of LV Switchgear so that you can avoid nuisance tripping, overheating,

2026/09/03 00:10:26

Why Buy Authorized Switchgear for International Power Projects?
When a substation is being built across a border, an authorized switchgear supplier for international power projects can determine whether the equipment passes inspection, arrives with the correct documents, and operates safely after energization. Developers often face mismatched voltage standards, uncertain warranty coverage, customs delays, unavailable spare parts, and local contractors who
How to Select a Pole-Mounted Circuit Breaker for Distribution Networks

2026/09/02 00:09:17

How to Select a Pole-Mounted Circuit Breaker for Distribution Networks
To select a pole-mounted circuit breaker for distribution networks, match the system voltage, continuous current, short-circuit duty, insulation level, protection scheme, operating environment, and utility standards before comparing manufacturers. For an outdoor pole-mounted vacuum circuit breaker, verify the vacuum interrupter rating, CT accuracy, recloser functions, and communications protocol.
European vs American Type Prefabricated Substations: What Are the Differences?

2026/09/02 00:08:45

European vs American Type Prefabricated Substations: What Are the Differences?
Choosing between a European type and an American type prefabricated substation affects installation time, safety, maintenance, fault response, land use, and total ownership cost. The right choice depends on the distribution voltage, transformer arrangement, protection scheme, environmental conditions, and local electrical code.

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