Green empowerment, sharing a better life
——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
Hot Products

02

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

03

Case presentation

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

04

News information

What Voltage and Breaking Capacity Should a Pole-Mounted Circuit Breaker Have?

2026/09/15 00:11:31

What Voltage and Breaking Capacity Should a Pole-Mounted Circuit Breaker Have?
A reliable Pole-Mounted Circuit Breaker Manufacturer helps utilities protect overhead distribution lines from short circuits, overloads, and storm-related faults. The right unit must match the system voltage, fault current, insulation level, control method, and installation environment. Buyers comparing an outdoor pole-mounted circuit breaker supplier or a medium-voltage pole-mounted circuit
Fixed vs Withdrawable Low Voltage Switchgear: Which Should You Choose?

2026/09/14 00:13:14

Fixed vs Withdrawable Low Voltage Switchgear: Which Should You Choose?
When facility managers compare fixed low voltage switchgear with withdrawable low voltage switchgear for industrial plants, the decision usually comes down to outage time, maintenance access, footprint, and total cost—not only the purchase price. A qualified low voltage switchgear manufacturer should explain how ACBs, MCCBs, busbars, Form 3b separation, and short-time withstand current (Icw)
How to Size a Prefabricated Substation Based on Transformer Capacity

2026/09/11 00:12:39

How to Size a Prefabricated Substation Based on Transformer Capacity
A reliable Prefabricated Substation Manufacturer sizes a substation by more than simply matching the transformer nameplate to the connected load. The correct design must account for maximum demand, power factor, future expansion, short circuit level, cable capacity, thermal conditions, protection coordination, installation space, and local electrical regulations.
How to Choose Metal Clad Switchgear for Medium-Voltage Distribution

2026/09/10 00:11:42

How to Choose Metal Clad Switchgear for Medium-Voltage Distribution
Choosing the right metal clad switchgear requires more than comparing voltage ratings and purchase prices. A reliable selection must match the electrical system, fault level, operating environment, protection philosophy, maintenance plan, project schedule, and applicable standards. This guide explains how to evaluate equipment step by step and how to work effectively with a qualified Metal Clad
How to Choose GIS Voltage and Current Ratings for a Substation Project

2026/09/09 00:12:44

How to Choose GIS Voltage and Current Ratings for a Substation Project
Choose a GIS voltage rating from the system’s highest operating voltage and insulation-coordination study—not from the nominal voltage alone. Choose a GIS current rating from the maximum continuous load, future transfer conditions, ambient temperature, enclosure arrangement, and busbar temperature-rise test. In practical terms, GIS voltage rating selection must confirm rated voltage Ur, while
SF6 vs SF6-Free Ring Main Units: Which Is Better for Your Project?

2026/09/08 00:01:51

SF6 vs SF6-Free Ring Main Units: Which Is Better for Your Project?
For a utility planner comparing SF6 vs SF6-free ring main units, the decision is no longer based only on footprint and purchase price. A project may need an SF6-free RMU for 12kV distribution, while another may still prioritize a proven SF6 design because of an existing maintenance system. The most useful answer to how to choose a ring main unit manufacturer depends on the network voltage, fault

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