31326 Surge Protection Kit, GPS Antenna Type N to  SMA


The 31326 is a GPS RF surge protection kit with flange mounting bracket. It may be flange-mounted to an enclosure backplate or bulkhead-mounted through an enclosure wall. One side of the surge protector connects to a GPS receiver with an SMA antenna connection. The other side connects to the GPS antenna/antenna coaxial cable with Type N connector. The surge protector passes up to ±6 Vdc, commonly needed for active GPS antenna applications. This kit includes:

  • ±6 Vdc pass, RF protector with hardware, suitable for 800 to 2500 MHz
  • Flange mounting bracket
  • 18 in. Type N to SMA coaxial jumper
  • 24 in. ground wire assembly

Note: For a pre-installed, bulkhead-mounted version of this same kit, see the 31324 Bulkhead Surge Protection Installed in Enclosure, GPS Antenna Type N to SMA.

Benefits and Features

  • Hybrid, multistage, multi-strike, fast response, high current capacity
  • Weatherproof when installed



Coaxial Jumper

Connector 1 Type N plug
Connector 2 SMA plug
Cable RG174/U
Length 45.7 cm (18 in.)


Voltage Passes up to ±6 Vdc from GPS receiver to powered/active GPS antenna.
Frequency 800 to 2500 MHz
Connectors Type N jack
Mounting Bulkhead or flange mount
Insertion Loss < 0.1 dB
Maximum Surge
  • IEC 61000-4-5 8/20 μs waveform
  • 20 kA (max)
Turn on Time 4 ns (for 2 kV/ns)
Temperature -50° to +85°C
Standards CE compliant, RoHS compliant, IEC 60529 IP67, Bellcore #TA-NWT-000487
Type N Connector Length 2.41 cm (0.95 in.)
Dimensions 9.27 x 7.16 x 3.55 cm (3.65 x 2.82 x 1.40 in.)
Weight 226.8 g (0.5 lb)

Flange Mount

Material Aluminum with stainless-steel screws, nuts, and washers
Dimensions 3.81 x 2.54 x 2.85 cm (1.5 x 1.0 x 1.12 in.)

Ground Wire

Wire Type 12 AWG stranded with PVC jacket
Connector 5/8 crimp ring lug, soldered
Length 61 cm (24 in.)


The 31326 is compatible with the following products:

  • TX312 (GPS antenna)
  • AL200
  • 9522B (GPS antenna)

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