Lightning Arrestors

Active and conventional lightning protection for substations, solar plants, and infrastructure

A lightning arrestor diverts the energy of a lightning strike safely to ground, protecting equipment, buildings, and personnel from the hundreds of millions of volts a strike can deliver. Norton Power manufactures both copper-bonded and pure copper lightning arrestors in 12mm, 14mm, and 25mm configurations — covering everything from rooftop installations to high-mast substation protection.

Each arrestor is designed to provide a low-impedance path only when the surge actually arrives, which means it doesn't interfere with normal operations. Solar plants, telecom towers, electric fences, and critical industrial installations are the typical applications where arrestor selection makes the difference between a successful asset life and a costly repair cycle.

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Features

Copper bonded variants in 12mm and 14mm sizes for cost-effective protection
Pure copper variants in 25mm size for premium high-exposure installations
Designed for low-impedance discharge only during surge events
Compatible with standard down-conductor systems
Suitable for outdoor mounting in all Indian climate conditions
Effective for direct strikes and induced surges

Why choose Norton Power

Reduces property damage from direct lightning strikes
Protects outdoor substation equipment that can't be sheltered
Prevents line-side surges from reaching connected equipment
Reduces electromagnetic interference during nearby strikes
Simple installation — compatible with standard mounting hardware

Specifications

Type	Copper Bonded, Pure Copper
Size	12, 14, 25
Mounting	Vertical with standard support clamp
Discharge path	Direct to earth electrode via down conductor
Operation	Low impedance only during surge event
Typical applications	Substations, solar plants, towers, critical infrastructure

Standards compliance

IS/IEC 62305IEC 60099IEEE C62.11

Applications

Solar PV plants and renewable energy installations

Power substations and switchyards

Telecom and broadcast towers

High-rise commercial and residential buildings

Petrochemical and oil & gas facilities

Electric fence protection systems

Models & variants

Copper Bonded Arrestor (12, 14 mm)
Pure Copper Arrestor (25 mm)

Frequently asked questions

Conventional arrestor or ESE (early streamer)?

Conventional Franklin-type arrestors are widely accepted under IEC 62305. ESE arrestors claim larger protection radius but their performance is contested in published research. Norton Power supplies conventional arrestors which have proven field history and clear standards backing.

How is the protection radius determined?

Protection radius depends on installation height, ground surface, and the IEC 62305 protection level chosen (I, II, III, or IV). For solar plants and substations, level II or III is typical. Share your site dimensions for a sizing recommendation.

Can the arrestor be installed on a flat roof?

Yes — flat roofs are a common installation. The arrestor is mounted on a vertical support to elevate it above surrounding structures, and connected to a properly sized down conductor leading to the earth electrode.