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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
Hot Products

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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

How to Select Circuit Breakers and Protection Relays for Metal Clad Switchgear

2026/09/01 00:09:32

How to Select Circuit Breakers and Protection Relays for Metal Clad Switchgear
To select circuit breakers and protection relays for metal-clad switchgear, start with the calculated fault current, system voltage, insulation level, grounding method, load profile, and required coordination time—not with a catalog rating. This guide explains how to select a vacuum circuit breaker, configure overcurrent protection, verify CT saturation, and specify IEC 62271-200 or
Low Voltage Switchgear for Solar, Commercial and Industrial Projects

2026/09/01 00:09:35

Low Voltage Switchgear for Solar, Commercial and Industrial Projects
Low voltage switchgear protects and controls electrical systems in solar, commercial, and industrial projects. In solar plants, stable solar power distribution is needed to move energy from inverters to transformers and the utility grid. A poorly selected panel can cause overheating, nuisance trips, equipment damage, and long service delays. Good electrical protection helps operators isolate
What Does Internal Arc Classification Mean for Metal Clad Switchgear?

2026/08/31 00:02:21

What Does Internal Arc Classification Mean for Metal Clad Switchgear?
What Does Internal Arc Classification Mean for Metal Clad Switchgear? It describes how well metal-clad switchgear protects people nearby when an internal electrical arc occurs. Tested under defined conditions, an Internal Arc Classification (IAC) rating identifies the accessible sides—front, lateral, and rear—the prospective short-circuit current, and the arc duration. For businesses, this

2026/08/31 00:02:23

Power Transformers for Solar and Wind Power Projects: Key Selection Factors
Power Transformers for Solar and Wind Power Projects must handle changing generation, long cable runs, and strict grid connection rules. Renewable energy transformer design also depends on inverter loading, collector system voltage, and site conditions. A poor choice can cause overheating, voltage instability, long outages, and costly replacement work.
SF6 vs SF6-Free Gas Insulated Switchgear: What Are the Differences?

2026/08/28 00:02:29

SF6 vs SF6-Free Gas Insulated Switchgear: What Are the Differences?
When a project team compares SF6 and SF6-free gas insulated switchgear, it is usually not choosing between two gases alone. It is choosing a complete operating philosophy that affects safety, environmental compliance, footprint, maintenance, reliability, installation risk, and total cost of ownership. A qualified Gas Insulated Switchgear Manufacturer should therefore evaluate the interrupter,
Vacuum vs SF6 Pole-Mounted Circuit Breakers: Which Is Better?

2026/08/28 00:02:32

Vacuum vs SF6 Pole-Mounted Circuit Breakers: Which Is Better?
Choosing between vacuum vs SF6 pole-mounted circuit breakers affects fault clearing, maintenance, environmental compliance, and the lifetime cost of a medium-voltage distribution system. Utilities asking for the best pole-mounted circuit breaker for rural distribution often compare interruption ratings, operating life, and service conditions, while buyers seeking an SF6-free pole-mounted recloser

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