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Porta Systems P399 Compact Central Office Protectors

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  • P399 Porta Systems P399 Compact Central Office Protectors
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Product Description

The P399 protects personnel and expensive equipment from damaging electrical surges that may get onto incomingcable lines. It mounts on conventional central office frames with 8 inch centers. Porta Systems P399 is a compact 100-pair connector that utilizes industry standard 5-pin protector modules.  The P399 comes in various input stub lengths either 22awg or 24awg and has either Wire-Wrap or Quick Clip output.

Please call for quantity discounts.

  • 100-pair front facing test field
  • Compact design saves space and increases number ofprotected pair per frame vertical
  • Accepts industry standard 5-pin protector modules
  • Gold plated protector module sockets and test field contactsfor superior electrical contact that eliminate noise problems
  • Fanning strips allow easy wire management for both fieldstubbing and cross connection to horizontal blocks bracket
  • Front ground test point offers labor savings and reliability
  • Factory stubbed units available
  • Operating Temperature: -13˚F to 149˚F (-25˚C to 65˚C)
  • P399 Data Sheet

The P399 is a direct replacement for the Emerson R399 Central Office Protector.

Catalog # 
Part # 
Porta Equivalent
R399 F249001 P399
R399AA25 F249024 P399-WW (24X25)
R399AA50 F249008 P399-WW (24X50)
R399AA75 F249111 P399-WW (24X75)
R399AA100 F249045 P399-WW (24X100)
R399BA25 F249015 P399-WW (22X25)
R399BA50 F249014 P399-WW (22X50)
R399BA75 F249077 P399-WW (22X75)
R399BA100 F249116 P399-WW (22X100)
Need a quote on P399 or R399 Central Office Protectors.  Please send your request to us here.










The Porta P399 is an exact replacement for the Emerson R399


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