CAT5-75 / CAT5-75-RJ45


Due to changes in industry standards, this product will not have long-term support; please see our replacement parts; 1 Gb CAT6-75 and CAT6-75-RJ45 surge protection product.

Protects High-Performance 4-Pair Cat 5e Outside Plant Cables as well as Cat 5e UTP Cables for Voice ISDN Low-Voltage (Digital, 75V) Applications. CAT5-75 (Using 110 Punchdown In/Out); CAT5-75-RJ45 (Using RJ-45 In/Out).
Applications: Off-Premise Extensions, Wireless Access Points, T-1, ISDN, Digital Stations.
(*Made in USA of U.S and imported parts* )

Specification Sheet Product Installation Instructions



  • Agency Approval UL Primary (497) and Isolated Loop (497B)
  • Grounding Requirements (See Technical Reference page 83-84 for additional grounding tips.)
  • Recommended Grounding Impedance <0.5 0hm
  • Width/Height/Depth/Weight 4.25” / 4.25" / 1.5" / 0.42 lbs
  • Product Warranty 5 years
  • Connected Equipment Warranty Up to $50,000


  • Signal Perfect Circuitry Yes
  • Fused Yes
  • Performance Rating Cat5e
  • Clamping Level 75V
  • Response Time 1-5 Nanoseconds
  • Capacitance <20pF
  • Suppression Modes Metallic & Logitudinal
  • Wires Protected 4-pairs
  • Termination Type 110 Punchdown or RJ-45


  • UL listed for Primary (497) and Isolated Loop (497B) applications
  • Exceeds TIA/EIA Standards 568 and 758 for CAT 5e performance
  • Solid-state protection for fastest response
  • Use between buildings in a campus environment as a building entrance protector or in hostile industrial applications as an isolated loop protector
  • Can be used in high power POE (POE+) applications
  • For use with CISCO POE systems
  • Expandable System Protection SurgeGate Modules can be attached to one another to expand system protection as your system grows
  • 5 Year Product Warranty This surge protector shall be free of any defects in design, materials, or workmanship, or ITW Linx will repair or replace the defective product
  • $50,000 Connected Equipment