From the pioneer of arc protection AQ-103 Watch the video This is how it works


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



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VdS Certificate for AQ-110F, AQ-102 and AQ-1000


Arcteq Arc Flash units AQ-110FLV, AQ-102LV and Arc Quenching device AQ-1000 are now VdS-Certified! VdS is one of the world’s...

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AQ-100 products in use for 20 000 000 days


AQ-100 products have now been combined in use for 20 000 000 days with an MTTF of over 200 years!...

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AQ-F255 now IEC61850 Ed2 certified


We are proud to announce again a highly esteemed third-party judgment: Arcteq Relays AQ-250 series now also IEC 61850 Ed.2...

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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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Kolmen sähköaseman yhteisprojekti on näyttävä osoitus Arcteqin ja sähköistysratkaisuja tarjoavan VEO:n toimivasta yhteistyöstä. Sami Koskela – VEO Oy, Jesse Saastamoinen...

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Arcteq’s new 250 series relays to protect three new substations

The joint project involving three substations is an impressive demonstration of the successful collaboration between Arcteq and VEO. Arcteq designs...

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Stora Enso invests in safety

Arcteq delivered the AQ 2000 medium voltage arc quenching system to Stora Enso’s Anjala paper mill located in Inkeroinen, Finland....

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Arcteq was chosen by CERN to be the supplier of the protection relays, for next 5 years

CERN, the European Organization for Nuclear Research, is within the next five years renewing the protection relays for the electricity...

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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.