Electrical devices used to detect and control high voltage or current surges in order to protect equipments or systems.

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Board mount surge suppressors are devices mounted on a printed circuit board (PCB) used to protect equipment from transient over voltages in power, data, and telephone circuits.
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Dataline and DC signal surge suppressors protect equipment from transient overvoltages present on data or DC signal lines.
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Gas discharge tubes (GDT) or gas tube arrestors (GTA) provide protection against voltage and current surges in electronic and electrical equipment. They include spark gaps, simple devices with two or three conducting electrodes separated by a gap filled with a gas such as air.
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Plugin style surge suppressors plug into wall outlets to protect equipment from transient overvoltages. 
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Single phase surge suppressors protect equipment from transient overvoltages present on AC single phase power lines.
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Surge protective devices (SPDs) are designed to protect equipment against temporary excess voltage and/or current.
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Surge Suppressors (819 suppliers)

Surge suppressors are used to protect equipment from transient over voltages in power, data, and telephone circuits.
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Three phase surge suppressors protect equipment from transient overvoltage’s present on AC three phase power lines.
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