Surge protection class 1

Class 1 surge protection devices are recommended for use in conjunction with lightning rods in high risk areas that have the probability of a direct lightning strike.
In order to ensure optimum protection, Class 1surge protection devices utilise dual earth
& phase/neutral terminals. This configuration reduces any additional voltage drop in the
connecting cables to virtually zero thereby obtaining the best possible peak voltage
protection (Up) to the installation.
Other technical characteristics
  • With a discharge current wave 10/350 µs (I imp) which is similar to lightning current
    on direct impact, Class 1 SPD’s must have the capacity to discharge the damaging
    effects of direct lightning strikes.
  • Class 1 SPD’s have a LED per phase to indicate operation.
  • Traditionally, between Class 1 & Class 2 SPD’s, the use of an inductor was
    necessary. Hager Class 1 SPD’s are associated with an electronic trigger system
    that allows Class 1 & Class 2 SPD’s to operate alongside each other without
    the use of an inductor.
  • Type of protection – common and differential modes.
  • Connection capacity: 35mm² flexible conductor, 50mm² rigid conductor.
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