What are the classes/types of Surge Protection Devices?
What are the classes/types of Surge Protection Devices?
There are majorly three types or classes of Surge Protection Devices (SPDs) :
| Description | Definition as per IEC 61643 | Definition as per EN61643 |
| SPDs which withstand the partial lightning current with a typical waveform 10/350 μs require a corresponding impulse test current Iimp | SPD Class 1 | SPD Type 1 |
| SPDs which withstand induced surge currents with a typical waveform 8/20 μs require a corresponding impulse test current In | SPD Class 2 | SPD Type 2 |
| SPDs that withstand induced surge currents with a typical waveform 8/20 μs and require a corresponding impulse test current Isc | SPD Class 3 | SPD Type 3 |
Surge Protection Devices or Surge Arrestors are available in all leading brands like ABB, Schneider, Hager etc. Please contact us (contactus@kmindustrialcorp,com) or call us at +91-9971138071 for your SPD requirements.
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