"There would be no way to go back using any other relays than Delcon. On the contrary, we are in process replace all remaining mechanical relays and opto-couplers with Delcon relays".



BillerudKorsnäs AB is a Swedish pulp and paper manufacturer and leading supplier of renewable packaging materials and solutions.

More than 150 years of expertise

Established in November 2012, through the merger of Billerud and Korsnäs, we pride ourselves with experience building on more than 150 years in the forestry and paper industry. Our expertise, ranging from raw material to consumer insights and environmental concerns, is key for unlocking the potential of paper and packaging solutions, and ultimately, to empower brands and businesses. Every day we help to save resources, increase profits and excite millions of consumers worldwide.

Our production units are situated in Grums just outside Karlstad, Skärblacka close to Norrköping, Karlsborg a few miles north-east of Luleå, in Gävle, In Frövi/Rockhammar south of Lindesberg, in Jakobstad in Finland and in Beetham in the Lake District in England.

"We used to have problems with electrical noise which was caused by cable capacitance from (partly) unshielded wiring. By using Delcon relays with built-in filters against noise we were able to get rid of the problem".



Yaskawa Electric Corporation is a world-leading provider of core technologies focused on motion control, robotics automation, and systems engineering. Since it was founded in 1915, Yaskawa Electric has provided motor applications, advancement of industrial automation, the creation of mechatronics and cutting-edge robotics. Yaskawa today employs over 10,000 persons globally in its core divisions. The company reported net sales of EUR 3.6 billion in 2016. For more information, visit

Yaskawa acquired The Switch to support both companies’ strategic objectives and strengthen their international presence. The Switch will play a key role in Yaskawa’s System Engineering Division, serving as a catalyst for long-term growth.

Yaskawa provides a gateway for The Switch to sell our products to the highly potential Japanese market, while we will help Yaskawa access customers in Europe, the Americas and other Asian markets.

"Some years ago we made comprehensive test operation with various relay manufacturers in order to find the most reliable I/O-relay concept for us. Delcon 's unique relays overthrew others by far."


GE's Grid Solutions business serves customers globally with over 17,000 employees in approximately 80 countries. Grid Solutions helps enable utilities and industry to effectively manage electricity from the point of generation to the point of consumption, helping to maximize the reliability, efficiency and resiliency of the grid.

"We have used Delcon relays for over 30 years in our Valmet DNA automation systems. We are very satisfied with the quality of Delcon products and service."


Valmet DNA is an automation and information platform for process control. It combines all controls for process, machine, quality, supervisory, drive, as well as optimizations, and mechanical condition monitoring into a single platform.

Also Safety Instrumented Systems and batch solutions are in a Valmet DNA
scope. Valmet DNA can be used also as a PLC, Soft PLC, or SCADA system. Valmet DNA can range from a micro-size system – including the world’s smallest fully functional user interface – to mill- and plantwide systems supporting global organizations.

The Valmet DNA system architecture is designed to meet the following requirements:

  • High system reliability, achieved by using proven system components.
  • Flexible usage, achieved by operational functionality in various locations.
  • Sophisticated analyzing and reporting needs.
  • Advanced control tasks and algorithms.

Valmet DNA is based on the knowledge of developing Distributed Control Systems (DCS) over 30 years.

"As a Bombardier's joint venture company we trust components approved by them. In addition Delcon's product quality, service level and delivery accuracy has proven to be excellent."


CRRC Corporation Limited is a Chinese publicly traded rolling stock manufacturer, formed on 1 June 2015 with the merger of CNR and CSR. As of 2016 it had 183,061 employees, and is the largest rolling stock manufacturer in the world.

”Our I/O-devices are mounted at difficult locations on overhead cranes around the World so the supply voltage is variable and "dirty". Delcon's reliable interface relays can be mounted in inaccessible places with complete confidence.”


Konecranes is a world-leading group of Lifting Businesses™, serving a broad range of customers, including manufacturing and process industries, shipyards, ports and terminals. Regardless of your lifting needs, Konecranes is committed to providing you with lifting equipment and services that increase the value and effectiveness of your business.

"We have used Delcon relays for over 20 years. There were three reasons to choose Delcon: High DC-voltage (250 VDC) switching capacity, filters against disturbances from cable capacitance and reliable operation even when idle over 20 years."

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    Kemijoki Oy is the largest company in the field of hydro power in Finland. Total output in their 20 hydro power plants is over 1000 MW.

    They started using Delcon relays 20 years ago after thorough testing. Main criteria for the decision were:

    • Interference suppression on long signal cables
    • High voltage DC switching
    • Infrequent switching