• Product
  • Suppliers
  • Manufacturers
  • Solutions
  • Free tools
  • Knowledges
  • Experts
  • Communities
Search


Outdoor Ring Main Unit

  • Outdoor Ring Main Unit

Key attributes

Brand ABB
Model NO. Outdoor Ring Main Unit
Rated voltage 12kV
Rated normal current 630A
Rated short-time withstand current 20kA
Series SafeLink CB

Product descriptions from the supplier

Description

The SafeLink CB is an outdoor RMU ideally suited for rural and urban distribution applications up to 13,8kV. The product is unique in terms of number of features and value it offers, making it the ideal choice for various applications in, for example, utility distribution networks, hotels, shopping centers, office buildings, airports, hospitals, tunnels and underground railways.

Product scope

  • Rated voltage: 12 and 13,8kV

  • Rated current: 630A

  • Rated short time current: 21 kA for 3 sec


Key benefits

  • Optimized safety with no exposure to live parts and built-in safety interlocks

  • Compact and robust design  

  • Reliable and minimal maintenance

  • Fast and easy to install

  • Solutions including applications for remote control and monitoring

  • Fully extensible on both sides with option of adding standalone vacuum circuit breakers or ring switches

Key features

  • Internal arc classified as per latest IEC, fully type tested in STL certified test labs

  • Vacuum circuit breaker with high mechanical endurance

  • Maintenance free and complete safety for user and pedestrian with no exposure to live parts

  • All in built mandatory safety interlocks provided to ensure operator safety

  • Complete solutions including applications for remote control and monitoring

  • Recyclable and very low environmental impact

Application Scenario 

1: Branch Power Supply for Urban and Rural Medium-Voltage Distribution Networks

Suitable for branch line power supply in 12/13.8kV urban and rural distribution networks, covering scenarios such as residential areas, commercial streets, and township markets. Its compact and robust design is suitable for limited installation spaces. The absence of exposed live parts plus safety interlocks ensure the safety of pedestrians, operation, and maintenance personnel. The low-maintenance feature reduces the operational costs of the power grid.

2: Power Distribution in Commercial Complexes and Public Facilities

Suitable for internal power distribution systems in commercial and public buildings such as hotels, shopping malls, hospitals, and office buildings. It supports remote monitoring and control, meets the 24-hour stable power supply demand of buildings, its quick installation feature adapts to the construction and decoration schedule, and the zero exposed live parts ensure safety in crowded scenarios.

3: Supporting Power Supply for Transportation Infrastructure

Used in medium-voltage power distribution links of airport terminals, urban tunnels, and subways. It complies with IEC internal arc standards, has strong weather resistance and low environmental impact. It can adapt to the expansion needs of transportation facilities through expansion modules, and the remote operation and maintenance function reduces on-site operation interference in transportation hubs.


Know your supplier
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 20000m² Total staff: Highest Annual Export(usD): 580000000
Workplace: 20000m²
Total staff:
Highest Annual Export(usD): 580000000
Services
Business Type: Sales
Main Categories: High Voltage Electrical Apparatus/Low Voltage Electrical Apparatus
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

Related Products

Related Knowledges

  • Comparative Analysis of High-Voltage Load Switch Technologies
    A load switch is a type of switching device positioned between circuit breakers and disconnectors. It features a simple arc extinguishing device capable of interrupting rated load current and certain overload currents, but cannot interrupt short-circuit currents. Load switches can be classified into high-voltage and low-voltage types according to their operating voltage.Solid gas-producing high-voltage load switch: This type utilizes the energy from the breaking arc itself to cause gas-producing
    12/15/2025
  • Analysis of Faults and Solutions for 17.5kV Ring Main Units in Distribution Networks
    With the improvement of social productivity and people's quality of life, the demand for electricity is continuously increasing. To ensure the effectiveness of power grid system configuration, it is necessary to reasonably construct distribution networks based on actual conditions. However, during the operation of distribution network systems, 17.5kV ring main units play a very important role, so the impact caused by failures is extremely significant. At this point, it is essential to adopt reas
    12/11/2025
  • How to install a DTU on an N2 Insulation ring main unit?
    DTU (Distribution Terminal Unit), a substation terminal in distribution automation systems, is secondary equipment installed in switching stations, distribution rooms, N2 Insulation ring main units (RMUs), and box-type substations. It bridges primary equipment and the distribution automation master station. Older N2 Insulation RMUs without DTUs cannot communicate with the master station, failing to meet automation requirements. While replacing entire RMUs with new DTU-integrated models would sol
    12/11/2025
  • Design of a New 12kV Environmentally Friendly Gas-Insulated Ring Main Unit
    1. Specific Design1.1 Design ConceptState Grid Corporation of China actively promotes grid energy conservation and low-carbon development to achieve national carbon peak (2030) and neutrality (2060) goals. Environmentally friendly gas-insulated ring main units represent this trend. A new 12kV integrated environmentally friendly gas-insulated ring main unit was designed combining vacuum interrupter technology with three-position disconnectors and vacuum circuit breakers. The design utilized Solid
    12/11/2025
  • Integrated Intelligent Ring Main Units in 10kV Distribution Automation
    In the rational application of intelligent technologies, the integrated intelligent ring main unit in 10kV distribution automation construction is more conducive to improving the construction level of 10kV distribution automation and ensuring the stability of 10kV distribution automation construction.1 Research Background Integrated intelligent ring main unit.(1) The integrated intelligent ring main unit adopts more advanced technologies, including but not limited to network technology, communic
    12/10/2025
  • 35kV RMU Busbar Failure Due to Installation Errors Analysis
    This article introduces a case of 35kV ring main unit busbar insulation breakdown failure, analyzes the failure causes and proposes solutions [3], providing reference for the construction and operation of new energy power stations.1 Accident OverviewOn March 17, 2023, a photovoltaic desertification control project site reported a ground fault trip accident in the 35kV ring main unit [4]. The equipment manufacturer arranged a team of technical experts to rush to the site to investigate the cause
    12/10/2025
Haven't found the right supplier yet? Let matching verified suppliers find you. Get Quotation Now
Haven't found the right supplier yet? Let matching verified suppliers find you.
Get Quotation Now
Send inquiry
+86
Click to upload file
Download
Get the IEE Business Application
Use the IEE-Business app to find equipment, obtain solutions, connect with experts, and participate in industry collaboration anytime, anywhere—fully supporting the development of your power projects and business.