Compact and versatile protection relays for utility and industrial applications

The wide application coverage and extensive range of state-of-the-art protection and control functionality make ABB’s renowned Relion 615 series of relays the ideal choice for the great variety of applications within distribution protection and control.

We continue to drive and embrace innovative technological advancements, and the 615 series today is stronger than ever before and will continue to be a series to rely on for years to come - evolving alongside the power system and supporting the increasing digitalization of the grid.

Contact Digital Substations

Customer references by segment

Utility

Industries

Transportation and infrastructure

Data center

Swedish utility invests in futureproofing substations

When it was time to upgrade four of its substations built in the 1980s, Swedish distribution system operator Sala-Heby Energi Elnät chose to upgrade their installed medium-voltage switchgear with ABB's Relion REF615 protection relays

ABB shores up reliable power supply at Southeast Asia’s largest floating solar plant

ABB has delivered a state-of-the-art distribution solution to ensure Southeast Asia’s largest floating solar power plant can deliver reliable, clean energy.

Substation reconstruction in Montenegro ensures reliable power to key consumers

Montenegrin distribution system operator CEDIS chose a medium-voltage solution with Relion protection relays to improve the reliability and quality of the power supply to end users in Podgorica.

Digital tech to illuminate major European cup final

Turkish utility BEDAŞ teams up with ABB to secure resilient power supply, including Relion 615 series protection relays, for a major football match in Istanbul.

ABB supports PLN to keep the lights on at this year’s G20 in Labuan Bajo, Indonesia

Our Relion protection relays have been supplied to Indonesian power company PLN for their Zero Downtime project - starting with a pilot at the Labuan Bajo resort, which will be hosting flagship events as part of the G20 summit in 2022.

ABB upgrades the power supply to one of Norway’s largest industrial clusters

Norwegian utility Herøya Nett replaces existing MV power supply with ABB technology to improve availability and safety as well as reduce maintenance time by 80 percent. The installation includes UniGear switchgear equipped with ABB Relion 615 series protection and control relays.

ABB relays to protect the electric network of Brussels

ABB’s feeder protection and control relays, and line differential protection and control relays, REF615 and RED615 ensure a reliable power supply for the 700,000 citizens of Brussels and important institutions such as the EU and NATO. In addition to the latest protection functionality, this leading-edge relay technology contains unique multifrequency admittance-based earth-fault protection offering higher sensitivity and selectivity for more accurate fault detection.

ABB Ability™ digital switchgear solution ensures reliable power in Helsinki's smart city district

In a smart city, the reliance on electricity is amplified and constantly increasing, and even short power cuts are more damaging. For Helen Electricity Network, the new area requires smart and reliable solutions for electricity distribution. At the center of Kalasatama, new automation solutions have been introduced for control of the closed medium-voltage ring network.

Turkey’s TEIAS relies on ABB technology to integrate renewables

In all 5,000 protection and control relays from the Relion product family will secure the electricity transmission for about 30 million citizens and contribute to the smooth integration of renewables in Turkey.

20150413

ABB to modernize Turkish power distribution network

Turkish utility Cengiz Limak Kolin Energy (CLK Energy) is modernizing its distribution grid to ensure reliable power to its more than 10 million customers. The order consisted of more than 5500 pieces of REF615 feeder protection and control relays.

20150820

Relion product family relays to Grassridge Wind Farm project

To ensure the highest level of operational efficiency and lowest level of risk, the end customer set demanding requirements for effective wind farm integration into the existing networks, emphasizing the need for exceptional flexibility and reliability of all components used. ABB’s solution is based on the compact and powerful protection and control functionality available when combining the leading-edge Relion 615 and 630 series protection and control relays.

Steel Dynamics Heartland Division boosts safety and reliability with power protection upgrade

ABB supports SDI Heartland’s steel processing operations in its critical modernization efforts. Strengthening reliable power supply and preventing costly downtime with the upgrade to ABB's Relion 615 series protection relays.

African gold mine digs deep for safe and reliable power supply

ABB worked with its engineering partner Power Plant Electrical (PPE) Technologies on a mining project to upgrade key electrical infrastructure. The project has enhanced efficiency and safety for one of the largest and most productive gold mines in Ghana.

The machine stress-testing undersea power cables

Elektrisk Drivteknik (EDT) of Sweden builds specialized power generators that stress-test power cables with up to 1.5 million volts. EDT relies on ABB for their test equipment, including our Relion REM615 protection relays.

A breath of fresh air - Sasol Mining relies on Relion to ensure reliable power supply to new ventilation shaft

Sasol Mining chose in favor of the highly flexible ABB Relion protection relays for their new substation at the Syferfontein mine in South Africa. The wide functionality, large event and fault recording capabilities, reduced footprint, as well as cost reductions were the key factors.

Copper and gold mine expansion in Georgia powered by digital solutions

Rich Metals Group (RMG) is one of the largest copper and gold mining businesses in Georgia and the entire Caucasus region. For the expansion of its facility, they chose ABB’s UniGear Digital switchgear solution, which takes full advantage of well-proven components: current and voltage sensors and ABB's Relion protection relays.

ABB power supply system advances safety and reliability in Finnish sugar refinery

A retrofit project conducted by ABB at Suomen Sokeri’s 50 year-old sugar refinery in Finland revolutionized site safety and significantly improved operational efficiency. The work started with the replacement of an old outdoor substation with a factory-built eHouse containing UniGear switchgear with Relion 615 series relays.

ABB celebrates delivering its 500,000th Relion® 615 series relay to Formosa Plastics Group

Formosa Plastics Group is one of the largest private corporate groups in Taiwan. The company already has roughly 25,000 Relion relays in use. The 500,000th relay of the 615 series is installed at their technical training center in Mailiao Industrial Park .

ABB ensures reliable power for the Siberian Coal Energy Company with UniGear Digital

A compact eHouse solution based on high-performing UniGear Digital switchgear solution with Relion 615 series protection relays safeguard the distribution of power and ensure production uptime at SUEK’s Vanino bulk terminal in Russia.

ABB delivers compact power management system to Ajinomoto Group

A fast and accurate load-shedding solution to secure continued power supply to critical loads. The cPMS is based on the load-shedding controller PML630, Relion 615 series protection relays and the Remote I/O unit RIO600. The seamless integration of these devices in the UniGear switchgear ensures a high-performing load-shedding solution

Sasol selects flexible mobile eHouse solution from ABB

The international chemical and energy company Sasol has implemented an innovative and flexible ABB solution utilizing the power of UniGear Digital switchgear, Relion 615 series protection relays and sensor technology installed in a lightweight E-House, which was mounted on a mobile truck trailer.

ABB shores up reliable power supply at Southeast Asia’s largest floating solar plant

The Cirata floating solar power plant will generate 192 megawatt peak of clean energy, enough to power 50,000 Indonesian homes. UniGear ZS1 switchgear equipped with Relion protection relays, ensure the reliability of its electricity supply.

Largest hospital area in Finland modernizes its power systems to ensure mission critical uptime

A comprehensive power distribution solution upgrade improves security, safety and sustainability for tech-savvy Hospital District of Helsinki and Uusimaa (HUS) at their Meilahti Hospital Area in Finland.

Green Móvil expands e-mobility in Colombia with advanced digital electrical infrastructure

ABB has provided digital electrical infrastructure for Green Móvil’s electrical bus charging stations. A robust and smart solution with a zenon SCADA system and SafePlus Digital switchgear with Relion REX640 and 615 series protection relays.

ABB energy efficient pumping solutions help Auckland tackle its worst-ever drought

ABB has delivered MV switchgear SafePlus, equipped with Relion 615 series relays for feeder protection and control to the Waikato 50 project in which an extra 50 million liters of water per day is produced for New Zealand’s largest city.

ABB technology to power world’s largest seawater desalination project

ABB technology is being used at the world’s largest desalination plant in Taweelah, Abu Dhabi, UAE. To provide safe, reliable and stable power supply to the operation of the seawater desalination equipment, ABB delivered also UniGear switchgear with Relion protection relays.

World's largest wastewater treatment plant gears up with innovative ABB technology

At the Bahr El Bakar facility in Egypt, ABB’s UniGear switchgear with Relion relays for protection and control ensure reliable and continuous power supply for central systems, processors and infrastructure including HVAC and lighting. With stable power, teams are kept safe, and the facility remains fully operational to decontaminate the large volumes of wastewater.

Chengdu Tianfu International Airport takes off with ABB technology

Tianfu Airport will operate all international routes departing from Chengdu and when complete it is expected to service an annual capacity of 90 million passengers and 2 million tons of cargo per year, making it the second largest airport in China. ABB's Relion 615 series protection relay for feeder protection are installed in the two terminals.

ABB powers progress at international space port

ABB is ensuring reliable power supply at the Guiana Space Center, the main space port of France and the European Space Agency. To protect, control, measure and monitor the network, Relion 615 series protection relays are installed in the switchgear.

Keeping the power distribution on track at London Underground

ABB has delivered a modern and cost-efficient power protection solution to ensure reliable and secure power supply to London Underground’s SSR (Sub-Surface Railway) lines.

ABB is keeping Finland’s longest road tunnel operational and safe

Building and maintaining tunnels and their electric networks come with numerous challenges. One of the most important ones is that power must be supplied at all times to ensure a safe environment - ensuring that there is air ventilation and light and that the traffic control system stays up at all times. To protect, control, measure and monitor the network throughout the entire tunnel, ABB's Relion 615 series protection relays were installed.

Fast deployment of ABB digital solution ensures power availability to a Centrin Data Systems data center

ABB installs a digital solution including Relion 615 series protection relays in an advanced data center in East China. Key results: 80% faster commissioning and reduced on-site wiring and 40% reduction in project delivery time.

ABB provides high efficiency power solutions to Telia for its next generation data center in Finland

ABB’s technologies ensure reliable power distribution in Telia’s mission critical data center in Helsinki, Finland. UniGear Digital combined with the latest Relion protection and control relays, and the capability of the IEC 61850 standard for communication enable a safe, flexible and smart electrical network.

ABB delivers state of the art technologies to Italy’s most innovative data center from market leader, Aruba

ABB supplied the entire electric power distribution system to Italy's largest and most modern data center campus in Ponte San Pietro. The Global Cloud Data Center is the largest data center campus in Italy.

ABB is keeping the power on at Safe Host’s data center in Switzerland

ABB has provided a reliable and energy-efficient power distribution solution, based on UniSec switchgear and Relion 615 series protection relays, to safeguard the distribution of power and ensure uptime at the largest data center in Switzerland.

More information

Key benefits and features

Learn more about the series

Tools and related offering

Stay in the loop

Overview

Relion 615 series in a nutshell

Communication solutions

The history of the 615 series

REX615 campaign page

Protection and control IED manager PCM600

ABB Relays-Online

The relay explorer RXplore

Relion product family

Centralized protection and control - SSC600

Digital substations web portal

Subscribe to the latest news on digital substations

Follow ABB Electrification on LinkedIn

Follow ABB Electrification on X (Twitter)

Select region / language

Europe
Americas
Middle East and Africa
Asia and Oceania

Global - English
Austria - German
Belgium - Dutch | French
Bulgaria - Bulgarian
Croatia - Croatian
Czech Republic - Czech
Denmark - Danish
Estonia - Estonian
Finland - Finnish
France - French
Germany - German
Greece - Greek
Hungary - Hungarian
Ireland - English
Italy - Italian
Latvia - Latvian
Lithuania - Lithuanian
Luxembourg - French
Netherlands - Dutch
Norway - Norwegian
Poland - Polish
Portugal - Portuguese
Romania - Romanian
Russia - Russian
Serbia - Serbian
Slovakia - Slovakian
Slovenia - Slovenian
Spain - Spanish
Sweden - Swedish
Switzerland - French | German | Italian
Turkiye - Turkish
United Kingdom - English

Global - English
Argentina - Spanish
Aruba - Spanish
Bolivia - Spanish
Brazil - Portuguese
Canada - English | French
Chile - Spanish
Colombia - Spanish
Costa Rica - Spanish
Dominican Republic - Spanish
Ecuador - Spanish
El Salvador - Spanish
Guatemala - Spanish
Honduras - Spanish
Mexico - Spanish
Panama - Spanish
Peru - Spanish
Puerto Rico - Spanish
United States of America - English
Uruguay - Spanish

Global - English
Algeria - English | French
Angola - English | French
Bahrain - English | French
Botswana - English | French
Cameroon - English | French
Côte d'Ivoire - English | French
Egypt - English | French
Ghana - English | French
Israel - Hebrew
Jordan - English
Kenya - English | French
Kuwait - English
Lebanon - English
Madagascar - English | French
Mali - English | French
Mauritius - English | French
Morocco - English | French
Namibia - English | French
Nigeria - English | French
Oman - English
Pakistan - English
Palestine - English
Qatar - English
Saudi Arabia - English
Senegal - English | French
South Africa - English
Tanzania - English | French
Tunisia - English | French
Uganda - English | French
United Arab Emirates - English
Zambia - English | French
Zimbabwe - English | French

Global - English
Australia - English
Bangladesh - English
China - Chinese | English
India - English
Indonesia - English
Japan - Japanese
Kazakhstan - Russian
Malaysia - English
Mongolia - Mongolian | English
New Zealand - English
Philippines - English
Singapore - English
South Korea - Korean
Sri Lanka - English
Taiwan (Chinese Taipei) - Chinese - Traditional
Thailand - English
Vietnam - English

abb.com privacy settings

Our website uses cookies which are necessary for running the website and for providing the services you request. We would also like to set the following optional cookies on your device. You can change these settings any time later by clicking "Change cookie settings" at the bottom of any page. For more information, please read our privacy notice.

Analytics

We collect statistics to understand how many visitors we have, how our visitors interact with the site and how we can improve it. The collected data does not directly identify anyone.

Preferences

We store choices you have made so that they are remembered across visits in order to provide you a more personalized experience.

Advertising and tracking

Your browsing behavior is tracked across websites by advertising and social network service providers. You may see tailored advertising and content on other websites based on your browsing profile.

Show details

Hide details

privacy notice.

Accept selected

Refuse all

Accept all