AC Surge Arrestors

Type 2 handles residual overvoltage that has already  been reduced further upstream, which suits sub-boards and most Cypriot homes. A combined T1+T2 module absorbs far more energy and belongs at the main incoming board, particularly on buildings with an external lightning conductor or a rooftop array.

Two-pole units cover single-phase supplies, clamping live and neutral. Four-pole versions are built for three-phase boards, where all three lines plus neutral need protection. Helios stocks both formats, so match the arrestor to whatever incoming supply your electrician has recorded on the board schedule.

It mounts on the DIN rail as close to the incoming supply as the layout allows, after the main switch and usually after the RCD. Short connection leads matter, because every extra centimetre of cable adds inductance and weakens how firmly the module clamps a spike.

Yes. Inverters, smart meters, and monitoring hardware rely on low-voltage electronics that fail quickly under a spike, and a rooftop array raises the exposure of the whole installation. Protection on the AC side complements any DC arresters fitted in the string combiner or the inverter itself.

Trikkis Energy supplies the Helios range from Monagroulli in Limassol, with stock levels shown against each item. Order online for delivery anywhere on the island, or request a quote when you need matching MCBs, RCBOs, and enclosures for a complete board build.