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  • Series
  • Model
  • Brand / Made in
  • Cat.5,5E and Cat.6 Surge Protector
  • Hybrid GDT and Diode Technology
  • 10/100/1000Mbps Compatible
  • Bi-Directional Protection
  • Shielded Connector Configurations
  • DIN Rail, Screw Lug, and Flange Mounting
MJ8-CAT5E Ethernet network surge protectors are designed for computer networks with very fast data transfer speeds up to 1Gbit/s for the Category 5E networks. Featured with in/out RJ45 connectors. In order to cover the many various types of networking applications.


  • Network: Gigabit Ethernet, Cat.5E cabling
  • Nominal line voltage Un: 5 Vdc
  • Max. DC operating voltage Uc: 8 Vdc
  • Max. load current IL: 1 A
  • Max. data rate: 1000 Mbps
  • Max. frequency    f max.: > 100 MHz
  • Insertion loss: < 1 dB
  • Protection level Up: 20 V
  • Max. shunt capacitance C: < 25 pF
  • Impulse current Iimp: 500 A
  • Line/Line Nominal discharge current In L/L: 500 A
  • Line/Ground Nominal discharge current In L/PE: 2000 A


  • Technology: GDT+Clamping diode
  • SPD configuration: 4 pairs+shielded
  • Connection to Network: RJ45 shielded female input/output
  • Format: Connector RJ45
  • Mounting: Mounting flange,Screw lug, DIN Rail
  • Housing material: Aluminium
  • Operating temperature: -40/+85°C
  • Protection rating: IP20
  • Failsafe mode: Short-circuit
  • Disconnection indicator: Transmission interrupt 
  • Pinout: (1-2)(3-6)(4-5)(7-8)
  • Dimensions: See diagram


  • Standards compliance: IEC 61643-21 / EN 61643-21 / UL497 B / IEEE 802-3ab
The surge protector for IT networks must be installed while respecting the following principles:
  • SPDs must be installed on the both sides of the transmission line (e.g. server side and terminal equipment side)
  • The surge protector and the protected equipment must be interconnected with the bonding network of the installation.
  • The earthing conductor (between the earth output of the SPD and the bonding circuit of the installation) must be as short as possible (less than 0.50 m).
  • The AC power supply of the equipment must also be surge protected.


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