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    What is a Surge Protection Device?

    Surge protection device, also known as SPD, is an electronic device that provides safety protection for various electronic equipment, instruments and communication lines. When a surge current or voltage is suddenly generated in an electrical circuit or communication line due to external interference, the surge protection device can conduct the shunt in a very short period of time, thereby avoiding the damage of the surge to other equipment in the circuit.

    Surge protection device is suitable for AC 50/60HZ, rated voltage 220V/380V power supply system, to protect indirect lightning and direct lightning effects or other transient overvoltage surges. ATO offers a series of 3 phase SPD for your choice. Now, let's take a look at this product.

    ATO surge protection device

    Basic parameter

    • Max. continuous operating voltage: 257V AC, 385V AC, 420V AC
    • Max. discharge current: 20kA, 40kA, 60kA, 80kA, 100kA, 120kA and 150kA
    • Poles: 1, 2, 3, 4

    3 phase surge protection device

    ATO surge protection device is designed in accordance with IEC Class II, reliable performance, long service life without long-term maintenance. It is DIN rail mounting, compact size, easy installation. Our SPD is suitable for the IT, TT, TN-C, TN-S, TN-C-S and etc. power supply, which can be used for surge protection in residential, tertiary industrial and other industrial applications.

    If you want to know more about introduction of ATO 3 phase SPD, view the video below.

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