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The pioneer of arc protection

In addition to high-quality products, we are committed to providing industry-leading support and service to our customers.

100-series product family_smaller
AQ-50-XXXX1 (left)

Arc flash protection

Arcteq’s AQ 100 series offers a complete solution for arc flash protection. The AQ 100 medium-voltage and low-voltage product lines are designed using top-of-the-line technology, with a focus on simplicity while maintaining both flexibility and function.

Protection relays

Arcteq's AQ 200 and AQ 300 series of protection devices are developed to cover any application in transmission or distribution network protection and control.

Fault detection

Arcteq's AQ-50 fault detection devices leave no fault unnoticed, as they can detect even the most challenging faults like high-impedance and intermittent earth faults. The unique algorithm analyzes changes to phase currents, so no voltage measurements are required to locate faults!


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

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Happy Holidays!

It’s that time of the year again…as the year is coming to its end, we would like to thank you, our customers and partners, for supporting us and for making power distribution safer and more reliable around the world. Let’s let the closeness of family and friends renew our spirits this festive season.

From all of us at Arcteq we wish you the very best during the holiday season and beyond.

Laajasalo reference case


Sähkönjakeluhäiriö Laajasalossa 23.8.2022

Helen Sähköverkko Oy:llä oli elokuussa laaja sähkökatko koskien alussa 12878 asiakasta Laajasalon sähköaseman syöttöalueella. Keskimäärin tämän keskeytyksen kesto oli 88 min, pisimmillään vajaat 2,5 tuntia.