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What are the different categories of exposure for Surge Protection Devices (SPDs)?

Product Line: 
Surge Protective Devices (SPD's)

Environment:
IEEE C62.41.2

Resolution:
Categories of Exposure.
  • Cat. C is Service Entrance Location - @ 240 kA per phase protection.
  • Cat. B is Distribution Location - @120 kA -160 kA per phase protection.
  • Cat. A is Point of Use Location - @ 80 kA – 120 kA per phase protection.
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