PMT840004

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Gas discharge tube arresters (GDT) are devices that are used to protect electrical systems from voltage surges caused by lightning and other transient voltage events. The PMT840004 is a type of GDT that is designed to provide superior protection for high voltage systems, up to 1,500V. Its multiple-level protection system is designed to respond quickly to high voltage and quickly suppress the voltage, minimizing system damage.

The PMT840004 is composed of two parts, the base unit which is used to contain the GDT, and the GDT itself. The base unit is comprised of an insulating housing with a ceramic insulator plate inside. This is surrounded by an electrically isolated spark gap, which is then surrounded by connecting pins which are used to connect the GDT to the system. The GDT is then installed directly into the base unit where it can provide both overvoltage and lightning protection.

The working principle of the PMT840004 is based on the principle of voltage limitation. When a surge comes from outside the system, the GDT acts like an electronic switch and limits the voltage of the system. This happens because the GDT operates on a Breakdown Voltage (BMV), which is the voltage at which it will start conducting. This BMV is adjustable and can be set to ensure the system is protected from a surge but still operational when the system is in use.

The PMT840004 is most often used to protect industrial equipment, telecommunications and CATV systems, street lighting, and industrial power systems. Its ability to offer surge protection for high voltage systems, combined with its exceptional long term reliability, make it an ideal choice for many annual protection needs.

The PMT840004 GDT arrester offers superior protection for the electrical grid and can help reduce the risk of power outages and repairs. It uses a fast-acting multilevel protection system which responds quickly to strong surge currents and minimizes the risk of damage to sensitive systems. Furthermore, due to its reliability, the PMT840004 offers a cost effective solution for both commercial and residential use.

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