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Firelite I300 Fault Isolator Module









Fire-Lite's I300(A) Fault Isolator Module is used with the MS-9050UD, MS-9200UDLS, and MS-9600(UD)LS to protect the system against wire-to-wire short circuits on the SLC loop. The I300(A) should be placed between each device on the SLC loop, to isolate a short-circuit problem between the modules.


  • Generally used at each T-tap branch to limit the effect of short circuits on a branch to the devices on that branch in Style 4 loops.
  • Isolates devices so they can continue to operate normally in the event of a short-circuit on the SLC in Style 7 operation.
  • Powered by SLC loop directly, no external power required.
  • Mounts in standard junction boxes
  • Integral LED blinks to indicate normal condition.
  • Supports a maximum of 25 devices in-between isolators, except when using relay bases.

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  • Model: Firelite I300
  • 26 Units in Stock
  • Manufactured by: Firelite

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