APO RESEARCH · REPORT
Medium Voltage Ring Main Units
A medium-voltage ring main unit is a factory-assembled switchgear arrangement used at a node in a distribution network.

Product & engineering
Understand the product.
In an electrical power distribution system, a ring main unit (RMU) is a factory assembled, metal enclosed set of switchgear used at the load connection points of a ring-type distribution network. It includes in one unit two switches that can connect the load to either or both main conductors, and a fusible switch or circuit breaker and switch that feed a distribution transformer. The metal enclosed unit connects to the transformer either through a bus throat of standardized dimensions, or else through cables and is usually installed outdoors. Ring main cables enter and leave the cabinet. This type of switchgear is used for medium-voltage power distribution.
The ring main unit was introduced in the United Kingdom and is now widely used in other countries. In North American distribution practice, often the equivalent of a ring main unit is built into a pad-mounted transformer which integrates switches and transformer into a single cabinet.
The ring ways and branch do not necessarily use the same switching apparatus. Ring circuits may use load switches, while a transformer branch may employ a switch-fuse combination or a circuit breaker with protection. Load switching, fault interruption, isolation and earthing are separate assigned duties. The selected network scheme determines when each path is open or closed; an RMU does not inherently require a continuously closed electrical ring.
Gas-insulated, solid-insulated and air-insulated architectures provide different primary insulation and service arrangements. Interruption technology is another choice: a vacuum interrupter can be used with solid or gas insulation. Cable terminations, operating mechanisms, indication, interlocks and optional sensors are integrated around the selected circuit functions. Enclosure dimensions alone do not describe the cable bending and access space.
Motor drives, fault indicators, a remote terminal unit and communications can extend a manual node into a monitored or controlled distribution asset. Automatic fault location or supply restoration additionally needs suitable sensors, protection coordination and a defined network-control scheme. Those capabilities should be traced through the offered package rather than inferred from a smart-grid label.
What turns activity into demand
The useful comparison starts with the ring ways, branch protection and required control interfaces. The family is the medium-voltage ring-main switching assembly. A distribution transformer, LV board, civil enclosure and remote network-control service can be supplied around it, but are not automatically part of the RMU itself.
The commercial boundary
The family is the medium-voltage ring-main switching assembly. A distribution transformer, LV board, civil enclosure and remote network-control service can be supplied around it, but are not automatically part of the RMU itself.
Selected research
Market Structure
Global Medium Voltage Ring Main Units Market by Size, by Type, by Application, by Region, History and Forecast 2021-2032
Market perspective
In an electrical power distribution system, a ring main unit (RMU) is a factory assembled, metal enclosed set of switchgear used at the load connection points of a ring-type distribution network. It includes in one unit two switches that can connect the load to either or both main conductors, and a fusible switch or circuit breaker and switch that feed a distribution transformer. The metal enclosed unit connects to the transformer either through a bus throat of standardized dimensions, or else through cables and is usually installed outdoors. Ring main cables enter and leave the cabinet. This type of switchgear is used for medium-voltage power distribution.
The ring main unit was introduced in the United Kingdom and is now widely used in other countries. In North American distribution practice, often the equivalent of a ring main unit is built into a pad-mounted transformer which integrates switches and transformer into a single cabinet.
ABB is the leading manufacturer in the global Medium Voltage Ring Main Units market with the market share of 11.39%, in terms of revenue, followed by Schneider Electric, Siemens, Eaton, SOJO, CEEPOWER, Creative Distribution Automation, Toshiba, Larsen & Toubro, Daya Electric, TGOOD, HEZONG, G&W Electric, and Sevenstars Electric. These leading 14 companies accounted for 53.59% of the market share in 2019.
Read the full market overview
Asia-Pacific is the largest downstream regions, occupied about 66.98% of market share, in terms of volume.
The report provides an overview of the global Medium Voltage Ring Main Units market in terms of capacity, output, revenue, and price, analyzing global market trends using historical revenue and sales data for 2021-2025, estimates for 2026, and projected CAGRs through 2032.
The study covers key producers of Medium Voltage Ring Main Units and consumption patterns in major regions and countries, assesses future market potential, and highlights priority regions and countries for segmenting the market into sub-sectors, with country-specific market value data for the U.S., Canada, Mexico, Brazil, China, Japan, South Korea, Southeast Asia, India, Germany, the U.K., Italy, the Middle East, Africa, and other countries.
The report also presents Medium Voltage Ring Main Units sales, revenue, market share, and industry ranking for the main manufacturers for 2021-2026, identifies the major stakeholders in the global market, and analyzes their competitive landscape and market positioning based on recent developments and segmental revenues.
In addition, the report analyzes segment data by type and application—covering sales, revenue, and price—for 2021-2032, and evaluates and forecasts the Medium Voltage Ring Main Units market size, projected growth trends, production technologies, key applications, and end-use industries.
Medium Voltage Ring Main Units Segment by Company
ABB
Schneider Electric
Siemens
Eaton
SOJO
CEEPOWER
Creative Distribution Automation
Toshiba
Larsen & Toubro
Daya Electric
TGOOD
HEZONG
G&W Electric
Sevenstars Electric
Medium Voltage Ring Main Units Segment by Type
Solid Insulated
Gas Insulated
Air Insulated
Medium Voltage Ring Main Units Segment by Application
Residential and Utilities
Industries
Others
Medium Voltage Ring Main Units Segment by Region
North America
United States
Canada
Mexico
Europe
Germany
France
U.K.
Italy
Russia
Spain
Netherlands
Switzerland
Sweden
Poland
Asia-Pacific
China
Japan
South Korea
India
Australia
Taiwan
Southeast Asia
South America
Brazil
Argentina
Chile
Middle East & Africa
Egypt
South Africa
Israel
Türkiye
GCC Countries
Study Objectives
1. To analyze and research the global status and future forecast, involving, production, value, consumption, growth rate (CAGR), market share, historical and forecast.
2. To present the key manufacturers, capacity, production, revenue, market share, and Recent Developments.
3. To split the breakdown data by regions, type, manufacturers, and Application.
4. To analyze the global and key regions market potential and advantage, opportunity and challenge, restraints, and risks.
5. To identify significant trends, drivers, influence factors in global and regions.
6. To analyze competitive developments such as expansions, agreements, new product launches, and acquisitions in the market.
Reasons to Buy This Report
1. This report will help the readers to understand the competition within the industries and strategies for the competitive environment to enhance the potential profit. The report also focuses on the competitive landscape of the global Medium Voltage Ring Main Units market, and introduces in detail the market share, industry ranking, competitor ecosystem, market performance, new product development, operation situation, expansion, and acquisition. etc. of the main players, which helps the readers to identify the main competitors and deeply understand the competition pattern of the market.
2. This report will help stakeholders to understand the global industry status and trends of Medium Voltage Ring Main Units and provides them with information on key market drivers, restraints, challenges, and opportunities.
3. This report will help stakeholders to understand competitors better and gain more insights to strengthen their position in their businesses. The competitive landscape section includes the market share and rank (in volume and value), competitor ecosystem, new product development, expansion, and acquisition.
4. This report stays updated with novel technology integration, features, and the latest developments in the market.
5. This report helps stakeholders to gain insights into which regions to target globally.
6. This report helps stakeholders to gain insights into the end-user perception concerning the adoption of Medium Voltage Ring Main Units.
7. This report helps stakeholders to identify some of the key players in the market and understand their valuable contribution.
Chapter Outline
Chapter 1: Provides an overview of the Medium Voltage Ring Main Units market, including product definition, global market growth prospects, production value, capacity, and average price forecasts (2021-2032).
Chapter 2: Analysis key trends, drivers, challenges, and opportunities within the global Medium Voltage Ring Main Units industry.
Chapter 3: Detailed analysis of Medium Voltage Ring Main Units market competition landscape. Including Medium Voltage Ring Main Units manufacturers' output value, output and average price from 2021 to 2026, as well as competition analysis indicators such as origin, product type, application, merger and acquisition information, etc.
Chapter 4: Provides the analysis of various market segments by type, covering the market size and development potential of each market segment, to help readers find the blue ocean market in different market segments.
Chapter 5: Provides the analysis of various market segments by application, covering the market size and development potential of each market segment, to help readers find the blue ocean market in different downstream markets.
Chapter 6: Provides profiles of key players, introducing the basic situation of the main companies in the market in detail, including product production/output, value, price, gross margin, product introduction, recent development, etc.
Chapter 7: Production/Production Value of Medium Voltage Ring Main Units by region. It provides a quantitative analysis of the market size and development potential of each region in the next six years.
Chapter 8: Consumption of Medium Voltage Ring Main Units in regional level and country level. It provides a quantitative analysis of the market size and development potential of each region and its main countries and introduces the market development, future development prospects, market space, and production of each country in the world.
Chapter 9: Analysis of industrial chain, including the upstream and downstream of the industry.
Chapter 10: Concluding Insights of the report.
More report detail
Tables and figures
Scope & coverage.
Types
- Solid Insulated
- Gas Insulated
- Air Insulated
Applications
- Residential and Utilities
- Industries
- Others
Companies covered
- ABB
- Schneider Electric
- Siemens
- Eaton
- SOJO
- CEEPOWER
- Creative Distribution Automation
- Toshiba
- Larsen & Toubro
- Daya Electric
- TGOOD
- HEZONG
- G&W Electric
- Sevenstars Electric
Inside the report.
1 Market Overview
- 1.1 Product Definition
- 1.2 Global Market Growth Prospects
- 1.2.1 Global Medium Voltage Ring Main Units Production Value Estimates and Forecasts (2021-2032)
- 1.2.2 Global Medium Voltage Ring Main Units Production Capacity Estimates and Forecasts (2021-2032)
- 1.2.3 Global Medium Voltage Ring Main Units Production Estimates and Forecasts (2021-2032)
- 1.2.4 Global Medium Voltage Ring Main Units Market Average Price (2021-2032)
- 1.3 Assumptions and Limitations
- 1.4 Study Goals and Objectives
2 Global Medium Voltage Ring Main Units Market Dynamics
- 2.1 Medium Voltage Ring Main Units Industry Trends
- 2.2 Medium Voltage Ring Main Units Industry Drivers
- 2.3 Medium Voltage Ring Main Units Industry Opportunities and Challenges
- 2.4 Medium Voltage Ring Main Units Industry Restraints
3 Medium Voltage Ring Main Units Market by Manufacturers
- 3.1 Global Medium Voltage Ring Main Units Production Value by Manufacturers (2021-2026)
- 3.2 Global Medium Voltage Ring Main Units Production by Manufacturers (2021-2026)
- 3.3 Global Medium Voltage Ring Main Units Average Price by Manufacturers (2021-2026)
- 3.4 Global Medium Voltage Ring Main Units Industry Manufacturers Ranking, 2024 VS 2025 VS 2026
- 3.5 Global Medium Voltage Ring Main Units Key Manufacturers Manufacturing Sites & Headquarters
- 3.6 Global Medium Voltage Ring Main Units Manufacturers, Product Type & Application
- 3.7 Global Medium Voltage Ring Main Units Manufacturers Established Date
- 3.8 Market Competitive Analysis
- 3.8.1 Global Medium Voltage Ring Main Units Market CR5 and HHI
- 3.8.2 Global Top 5 and 10 Medium Voltage Ring Main Units Players Market Share by Production Value in 2025
- 3.8.3 2025 Medium Voltage Ring Main Units Tier 1, Tier 2, and Tier 3
4 Medium Voltage Ring Main Units Market by Type
- 4.1 Medium Voltage Ring Main Units Type Introduction
- 4.1.1 Solid Insulated
- 4.1.2 Gas Insulated
- 4.1.3 Air Insulated
- 4.2 Global Medium Voltage Ring Main Units Production by Type
- 4.2.1 Global Medium Voltage Ring Main Units Production by Type (2021 VS 2025 VS 2032)
- 4.2.2 Global Medium Voltage Ring Main Units Production by Type (2021-2032)
- 4.2.3 Global Medium Voltage Ring Main Units Production Market Share by Type (2021-2032)
- 4.3 Global Medium Voltage Ring Main Units Production Value by Type
- 4.3.1 Global Medium Voltage Ring Main Units Production Value by Type (2021 VS 2025 VS 2032)
- 4.3.2 Global Medium Voltage Ring Main Units Production Value by Type (2021-2032)
- 4.3.3 Global Medium Voltage Ring Main Units Production Value Market Share by Type (2021-2032)
5 Medium Voltage Ring Main Units Market by Application
- 5.1 Medium Voltage Ring Main Units Application Introduction
- 5.1.1 Residential and Utilities
- 5.1.2 Industries
- 5.1.3 Others
- 5.2 Global Medium Voltage Ring Main Units Production by Application
- 5.2.1 Global Medium Voltage Ring Main Units Production by Application (2021 VS 2025 VS 2032)
- 5.2.2 Global Medium Voltage Ring Main Units Production by Application (2021-2032)
- 5.2.3 Global Medium Voltage Ring Main Units Production Market Share by Application (2021-2032)
- 5.3 Global Medium Voltage Ring Main Units Production Value by Application
- 5.3.1 Global Medium Voltage Ring Main Units Production Value by Application (2021 VS 2025 VS 2032)
- 5.3.2 Global Medium Voltage Ring Main Units Production Value by Application (2021-2032)
- 5.3.3 Global Medium Voltage Ring Main Units Production Value Market Share by Application (2021-2032)
6 Company Profiles
- 6.1 ABB
- 6.1.1 ABB Company Information
- 6.1.2 ABB Business Overview
- 6.1.3 ABB Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.1.4 ABB Medium Voltage Ring Main Units Product Portfolio
- 6.1.5 ABB Recent Developments
- 6.2 Schneider Electric
- 6.2.1 Schneider Electric Company Information
- 6.2.2 Schneider Electric Business Overview
- 6.2.3 Schneider Electric Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.2.4 Schneider Electric Medium Voltage Ring Main Units Product Portfolio
- 6.2.5 Schneider Electric Recent Developments
- 6.3 Siemens
- 6.3.1 Siemens Company Information
- 6.3.2 Siemens Business Overview
- 6.3.3 Siemens Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.3.4 Siemens Medium Voltage Ring Main Units Product Portfolio
- 6.3.5 Siemens Recent Developments
- 6.4 Eaton
- 6.4.1 Eaton Company Information
- 6.4.2 Eaton Business Overview
- 6.4.3 Eaton Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.4.4 Eaton Medium Voltage Ring Main Units Product Portfolio
- 6.4.5 Eaton Recent Developments
- 6.5 SOJO
- 6.5.1 SOJO Company Information
- 6.5.2 SOJO Business Overview
- 6.5.3 SOJO Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.5.4 SOJO Medium Voltage Ring Main Units Product Portfolio
- 6.5.5 SOJO Recent Developments
- 6.6 CEEPOWER
- 6.6.1 CEEPOWER Company Information
- 6.6.2 CEEPOWER Business Overview
- 6.6.3 CEEPOWER Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.6.4 CEEPOWER Medium Voltage Ring Main Units Product Portfolio
- 6.6.5 CEEPOWER Recent Developments
- 6.7 Creative Distribution Automation
- 6.7.1 Creative Distribution Automation Company Information
- 6.7.2 Creative Distribution Automation Business Overview
- 6.7.3 Creative Distribution Automation Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.7.4 Creative Distribution Automation Medium Voltage Ring Main Units Product Portfolio
- 6.7.5 Creative Distribution Automation Recent Developments
- 6.8 Toshiba
- 6.8.1 Toshiba Company Information
- 6.8.2 Toshiba Business Overview
- 6.8.3 Toshiba Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.8.4 Toshiba Medium Voltage Ring Main Units Product Portfolio
- 6.8.5 Toshiba Recent Developments
- 6.9 Larsen & Toubro
- 6.9.1 Larsen & Toubro Company Information
- 6.9.2 Larsen & Toubro Business Overview
- 6.9.3 Larsen & Toubro Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.9.4 Larsen & Toubro Medium Voltage Ring Main Units Product Portfolio
- 6.9.5 Larsen & Toubro Recent Developments
- 6.10 Daya Electric
- 6.10.1 Daya Electric Company Information
- 6.10.2 Daya Electric Business Overview
- 6.10.3 Daya Electric Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.10.4 Daya Electric Medium Voltage Ring Main Units Product Portfolio
- 6.10.5 Daya Electric Recent Developments
- 6.11 TGOOD
- 6.11.1 TGOOD Company Information
- 6.11.2 TGOOD Business Overview
- 6.11.3 TGOOD Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.11.4 TGOOD Medium Voltage Ring Main Units Product Portfolio
- 6.11.5 TGOOD Recent Developments
- 6.12 HEZONG
- 6.12.1 HEZONG Company Information
- 6.12.2 HEZONG Business Overview
- 6.12.3 HEZONG Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.12.4 HEZONG Medium Voltage Ring Main Units Product Portfolio
- 6.12.5 HEZONG Recent Developments
- 6.13 G&W Electric
- 6.13.1 G&W Electric Company Information
- 6.13.2 G&W Electric Business Overview
- 6.13.3 G&W Electric Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.13.4 G&W Electric Medium Voltage Ring Main Units Product Portfolio
- 6.13.5 G&W Electric Recent Developments
- 6.14 Sevenstars Electric
- 6.14.1 Sevenstars Electric Company Information
- 6.14.2 Sevenstars Electric Business Overview
- 6.14.3 Sevenstars Electric Medium Voltage Ring Main Units Production, Value and Gross Margin (2021-2026)
- 6.14.4 Sevenstars Electric Medium Voltage Ring Main Units Product Portfolio
- 6.14.5 Sevenstars Electric Recent Developments
7 Global Medium Voltage Ring Main Units Production by Region
- 7.1 Global Medium Voltage Ring Main Units Production by Region: 2021 VS 2025 VS 2032
- 7.2 Global Medium Voltage Ring Main Units Production by Region (2021-2032)
- 7.2.1 Global Medium Voltage Ring Main Units Production by Region (2021-2026)
- 7.2.2 Global Medium Voltage Ring Main Units Production Forecast by Region (2027-2032)
- 7.3 Global Medium Voltage Ring Main Units Production by Region: 2021 VS 2025 VS 2032
- 7.4 Global Medium Voltage Ring Main Units Production Value by Region (2021-2032)
- 7.4.1 Global Medium Voltage Ring Main Units Production Value by Region (2021-2026)
- 7.4.2 Global Medium Voltage Ring Main Units Production Value by Region (2027-2032)
- 7.5 Global Medium Voltage Ring Main Units Market Price Analysis by Region (2021-2032)
- 7.6 Regional Production Value Trends (2021-2032)
- 7.6.1 North America Medium Voltage Ring Main Units Production Value (2021-2032)
- 7.6.2 Europe Medium Voltage Ring Main Units Production Value (2021-2032)
- 7.6.3 Asia-Pacific Medium Voltage Ring Main Units Production Value (2021-2032)
- 7.6.4 South America Medium Voltage Ring Main Units Production Value (2021-2032)
- 7.6.5 Middle East & Africa Medium Voltage Ring Main Units Production Value (2021-2032)
8 Global Medium Voltage Ring Main Units Consumption by Region
- 8.1 Global Medium Voltage Ring Main Units Consumption by Region: 2021 VS 2025 VS 2032
- 8.2 Global Medium Voltage Ring Main Units Consumption by Region (2021-2032)
- 8.2.1 Global Medium Voltage Ring Main Units Consumption by Region (2021-2026)
- 8.2.2 Global Medium Voltage Ring Main Units Consumption by Region (2027-2032)
- 8.3 North America
- 8.3.1 North America Medium Voltage Ring Main Units Consumption Growth Rate by Country: 2021 VS 2025 VS 2032
- 8.3.2 North America Medium Voltage Ring Main Units Consumption by Country (2021-2032)
- 8.3.3 U.S.
- 8.3.4 Canada
- 8.3.5 Mexico
- 8.4 Europe
- 8.4.1 Europe Medium Voltage Ring Main Units Consumption Growth Rate by Country: 2021 VS 2025 VS 2032
- 8.4.2 Europe Medium Voltage Ring Main Units Consumption by Country (2021-2032)
- 8.4.3 Germany
- 8.4.4 France
- 8.4.5 U.K.
- 8.4.6 Italy
- 8.4.7 Netherlands
- 8.5 Asia Pacific
- 8.5.1 Asia Pacific Medium Voltage Ring Main Units Consumption Growth Rate by Country: 2021 VS 2025 VS 2032
- 8.5.2 Asia Pacific Medium Voltage Ring Main Units Consumption by Country (2021-2032)
- 8.5.3 China
- 8.5.4 Japan
- 8.5.5 South Korea
- 8.5.6 Southeast Asia
- 8.5.7 India
- 8.5.8 Australia
- 8.6 South America
- 8.6.1 South America Medium Voltage Ring Main Units Consumption Growth Rate by Country: 2021 VS 2025 VS 2032
- 8.6.2 South America Medium Voltage Ring Main Units Consumption by Country (2021-2032)
- 8.6.3 Brazil
- 8.6.4 Argentina
- 8.6.5 Chile
- 8.6.6 Colombia
- 8.7 Middle East & Africa
- 8.7.1 Middle East & Africa Medium Voltage Ring Main Units Consumption Growth Rate by Country: 2021 VS 2025 VS 2032
- 8.7.2 Middle East & Africa Medium Voltage Ring Main Units Consumption by Country (2021-2032)
- 8.7.3 Egypt
- 8.7.4 South Africa
- 8.7.5 Israel
- 8.7.6 Türkiye
- 8.7.7 GCC Countries
9 Value Chain and Sales Channels Analysis
- 9.1 Medium Voltage Ring Main Units Value Chain Analysis
- 9.1.1 Medium Voltage Ring Main Units Key Raw Materials
- 9.1.2 Raw Materials Key Suppliers
- 9.1.3 Manufacturing Cost Structure
- 9.1.4 Medium Voltage Ring Main Units Production Mode & Process
- 9.2 Medium Voltage Ring Main Units Sales Channels Analysis
- 9.2.1 Direct Comparison with Distribution Share
- 9.2.2 Medium Voltage Ring Main Units Distributors
- 9.2.3 Medium Voltage Ring Main Units Customers
10 Concluding Insights
11 Appendix
- 11.1 Reasons for Doing This Study
- 11.2 Research Methodology
- 11.3 Research Process
- 11.4 Authors List of This Report
- 11.5 Data Source
- 11.5.1 Secondary Sources
- 11.5.2 Primary Sources
- 11.6 Disclaimer
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