Protection relays

Arcteq's AQ-200 and AQ-300 series of protection IEDs are developed to cover any application in transmission or distribution network protection and control. These high-performance product lines offer a variety of solutions for a variety of situations: line distance and differential protection, distributed or centralized busbar protection, machine protection and feeder protection.

Arc flash protection

Arcteq's AQ-100 series offers a complete solution for arc flash protection. The AQ-100 product line is designed using top-of-the-line technology, with a focus on simplicity while maintaining both flexibility and function. The series is built to meet the growing demands in both LV and MV switchgear and controller applications, and it ranges from basic stand-alone units to more complex system solutions.


Arcteq provides a comprehensive range of services to its customers through its own skilled staff and a global network of partners.

Arcteq support line +358 10 3221 388 EET 9:00 – 17:00

Outside the hours stated above, please issue your support case at  https://support.arcteq.fi/portal/home



Arcteq customer service team grows again


The Arcteq Customer Service team is growing again! We are delighted to announce that Jani Koivistoinen is joining Arcteq as...

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Arcteq closed for midsummer


We are closed on Friday 24.6.2022 due to Midsummer and will be at your assistance again on Monday 27th of...

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AQ 250 firmware release


The new firmware for AQ 250 series is now released. The new release comes with new products, functionality, and improvement...

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Arctec Product Training in Vaasa


Arcteq product training gathered attendees from seven countries at the Arcetq AQademy training centre in Vaasa. The four-day training included...

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Anuradhapura North water supply project

The essence of comfortable life requires a safe environment including clean water and fresh air, and a safe power system....

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110 kV/22 kV Hòa Bình 1 Wind farm project

After successfully installing the Phase I protection devices for the Hoa Binh Windfarm station in Vietnam, Arcteq also obtained the...

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First substation commissioned for the Swedish Railways

The first AQ-R215 protection relays are now commissioned in the Swedish railway network. The AQ-R215 is specially designed for Trafikverket...

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Arcteq protection relays meet CERN’s tightened technical criteria

Arcteq protection relays meet CERN’s tightened technical criteria   Arcteq Relays has signed a five-year frame agreement with the European...

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Arcteq arc protection system with AQ-1000 arc quenching device to Island Innovator

Arcteq supplies the Norwegian Island Drilling Company through our new partner Mongstad TavleTeknikk with AQ 100 arc flash protection system,...

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We provide a comprehensive range of services to our
customers through our own skilled staff and a global network
of partners.