Lightning & surge protection

Stop the surge before it reaches the board

Designed and made in South Africa for more than 30 years. Plug-in protectors, DB board arresters, data and telecoms protection.

Experience
30+ years
Warranty
2 years
Made in
South Africa
How surge protection works

Six thousand volts in. A clear line out.

  1. 01
    A strike lands two kilometres away

    The current spreads through the ground and couples into nearby supply and data lines. Thousands of volts travel towards your building in microseconds.

  2. 02
    The protector conducts to earth

    Inside a Clearline protector, components that are normally idle switch on in nanoseconds and divert the surge current to the earth conductor.

  3. 03
    Your equipment sees a clear line

    The voltage that gets through is held below what the equipment can withstand. When the surge has passed, the protector returns to standby.

Incoming0.0 kV
Let-through0.0 kV
Waveform8/20 µs
Up ≤ 1.5 kVIncoming surgeto earth

Illustration of a typical 8/20 µs test impulse. Not measured data.

Protection zoning

Switch on each layer. Watch the strike.

A building is protected in zones, from the roof inwards. Each layer handles what the one before it lets through. Turn them on and off to see why one protector on its own is rarely enough.

LPZ 0A · direct strike possibleLPZ 0BLPZ 1LPZ 2powerdata · phoneDBline
Risk70/100
Exposed

A Type 1+2 arrester at the distribution board diverts surges on the incoming supply before they reach any circuit.

DB board protection
Read: protection zoning explained
Why Clearline

Built for the supply we actually have

01.

Designed and made in South Africa

Clearline designs and develops its own products locally, and keeps adapting them to South African supply conditions: load-shedding, brownouts and some of the highest lightning densities in the world.

About Clearline
02.

Thirty years of surge protection

More than 30 years of industry-specific protection for telecoms, security and office automation, backed by a team of over 200 people.

Our story
03.

Two-year product warranty

Every Clearline protector is guaranteed for two years against defective material and workmanship. If a unit is damaged by lightning or an over-voltage, we repair or replace it.

Warranty terms
04.

Connected equipment warranty

Selected plug-and-play protectors also cover the equipment plugged into them. If a surge gets through a properly installed unit, we pay to repair or replace that equipment.

What is covered
05.

Site surveys and reports

Our teams survey homes, businesses and industrial sites, then give you an obligation-free report. The call-out fee is waived if the visit leads to a sale.

Request a survey