Lightning Current Arrester for Coaxial Lines (F Connector)

Lightning Current Arrester for Coaxial Lines (F Connector)

SKU: KM-FX-090 F75 TF/F Category: Tag:

Type: D1, C2
Location: ST 1

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SKU: KM-FX-090 F75 TF/F Category: Tag:

Product Information:

Lightning current arrester with floating shielding (separated with GDT) for TV and CCTV coaxial line systems.


  • F Connectors
  • Use on systems up to 70 volts

Benefits: Simple installation. Universal plastic adapter for mounting on DIN rail and GND 2 holder

Standards: EN 61643-21 (Surge Protection Devices)

Application: Install at the boundary of LPZ0 and LPZ1 zones at the line entry into the building.

More Information:

Where low voltage, data and telecom lines enter and exit the building, they must also be included in the Lightning Protection System. These include:

  • Electromagnetic shielding
  • Telephone lines
  • Data communication lines
  • Instrumentation, control, signalling lines
  • Coaxial lines for CCTV, TV, & antenna cables

A surge or lightning protection device prevents damage to electrical and electronic equipment from transient over-voltage events by blocking or redirecting surge current to the ground instead of passing through the equipment.

By their nature, low voltage, data and telecom lines are not as robust as mains power cables and as such do not carry the same magnitude of lightning current. However, the size of that voltage/current is large in comparison to the system operating voltage and, as such, these lightning induced transients can still cause irreparable and expensive damage.

Since transients can be induced from the large electro-magnetic field created during a lightning strike, care needs to be taken over the routeing of such cables.

When selecting a data, telephone or low voltage protector, extra care must be taken to ensure that clamping performance of the SPD does not impede the data/signal transmission voltage.

Electrical Specification:

Order number
KM-FX-090 F75 T F/F
Maximum operating voltageUc
70V DC
Nominal load currentIL
C2 Nominal discharge current (8/20μs) core-SH/SH-PEIn
D1 Impulse discharge current (10/350μs) core-SH/SH-PEIimp
C3 Voltage protection level mode core-SH/SH-PE at 1kV/μsUp
Wave impedanceZ
Insertion attenuation
Bandwidth (min - max)f
0MHz - 2150MHz
Response time core-SH/SH-PEta
Connection (input - output)
Degree of protection
Range of operating temperatures (min - max)
-40°C - +80°C
DIN rail 35mm and GND2 holder
According to standard
EN 61643-21+A1,A2:2013, IEC 61643-21+A1,A2:2012 / D1, C2
ETIM Class
120g (nett), 140g (gross)

Dimensions and Wiring Diagram for Lightning Current Arrester for Coaxial Lines (F Connector) :