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  • Description: Outdoor POE-B in-line surge protector
  • SPD configuration: 8 wires+shielded
  • Network: POE-B and Gigabit Ethernet, High POE
  • Max. DC operating voltage: 7.5 Vdc ( - 650 mA. 60 Vdc ( - 650 mA
  • RJ45 Shielded connectors
  • Technology: GDT+Clamping diode
  • Outdoor application: IP65 rating
  • Plastic Box enclosure
  • Standards compliance: IEC 61643-21 / EN 61643-21 / UL497 B / IEEE 802-3ab/3at
  • Certification: UL 497B


The CMJ8-POE is an outdoor PoE surge protector designed to protect sensitive data-processing equipment connected to a PoE (Power over Ethernet) network from transient over voltages. The CMJ8-POE surge protector is deployed in signal network applications with data transmission speeds up to1000 Mbps and is equipped with high quality shielded RJ45 connectors.


  • Network: POE-B and Gigabit Ethernet, High POE
  • Nominal line voltage Un: 5 Vdc/48 Vdc
  • Max. DC operating voltage Uc: 7.5 Vdc ( - 650 mA. 60 Vdc ( - 650 mA
  • Max. frequency f max.: 250 MHz
  • Max. data rate: 10/100/1000 Mbps
  • Insertion loss: < 1 dB
  • Max. load current IL: 1200 mA
  • Protection level Up: 20/70 V (Following the test category C3 (IEC61643-21)-Line/Line) 
  • Impulse current Iimp: 500 A (2 x 10/350µs Test-D1 Category)
  • Line/Line Nominal discharge current In L/L: 500 A (C2 Category)
  • Line/Ground Nominal discharge current In L/PE: 2000 A (8/20µs Test x10-C2 Category)


  • Technology: GDT+Clamping diode
  • SPD configuration: 8 wires+shielded
  • Connection to Network: RJ45 shielded connectors Female input/output
  • Format: Plastic Box with connectors input/output
  • Mounting: On plate or pole
  • Housing material: Thermoplastic UL94 V-0
  • Operating temperature: -40/+85°C
  • Protection rating: IP65
  • Outdoor application: Yes
  • Failsafe mode: Short-circuit
  • End of life: Short-circuit - transmision cut-off - fault mode 2
  • Spare module(s): C2MJ8-POE-B/PCB
  • Pinout: (1-2)(3-6)(4-5)(7-8)
  • Dimensions: See diagram


  • Standards compliance: IEC 61643-21/EN 61643-21/UL497B/IEEE 802-3ab/3at
  • Certification: UL 497B
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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