31312 Bulkhead Surge Protection Installed in Enclosure, Type N to RPSMA, 700 to 2700 MHz


Commonly used with RF407-series or RF451 radio devices,the 31312 is an RF surge protection kit that is installed by Campbell Scientific, bulkhead-mounted through the enclosure wall. One side of the surge protector connects to a radio with an RPSMA antenna connection. The other side connects to an antenna or antenna coaxial cable with a Type N connector. This kit includes:

  • Bi-directional coaxial RF protector with hardware, suitable for 700 to 2700 MHz
  • 18 in. Type N to RPSMA coaxial jumper
  • 24 in. ground wire assembly
  • Installation of the kit into an enclosure on the same order

Note: For a flange-mounted version of this same kit, see the 31314 Surge Protection Kit, Type N to RPSMA, 700 to 2700 MHz.

Benefits and Features

  • Superior coil inductor surge performance design
  • Weatherproof when installed



Coaxial Jumper

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


Frequency 700 to 2700 MHz
Connectors Type N jack
Mounting Bulkhead mount
  • DC block (RF only)
  • Bi-directional (Connectors are not antenna- or radio-specific.)
Insertion Loss < 0.1 dB
Maximum Surge
  • IEC 61000-4-5 8/20 μs waveform
  • 40 kA (max)
  • 20 kA (multiple)
Material Tri-plated brass body, PTFE dielectric, tri-metal center pins, SS 5/8-24 hex nut, SS 5/8 lock washer, silicon O-ring
Temperature -50° to +85°C
Standards CE compliant, RoHS compliant, IEC 60529 IP67, Bellcore #TA-NWT-000487
Body Diameter 3.0 cm (1.18 in.)
Connector Length 2.41 cm (0.95 in.)
Total Length 9.17 cm (3.16 in.)

Ground Wire

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


The 31312 is compatible with the following products:

  • NL240
  • RF401A, RF411A
  • RF401, RF411, RF416
  • RF430, RF431, RF432
  • RF400, RF410, RF415
  • RF451 
  • CR6-RF407, CR6-RF412, CR6-RF422, CR6-RF451
  • CR206X, CR211X, CR216X
  • CR206, CR211, CR216
  • CR205, CR210, CR215
  • CRVW3-RF451, CRVW-RF407, CRVW3-RF412, CRVW3-RF422
  • AVW206, AVW211, AVW216
  • CWB100, CWB100A, CWB100E