38999 Series

38999 - Power

For high power transmissions
38999 Series

38999 - Power

For high power transmissions

Key features

  • Derived from MIL-DTL-38999 series III
  • More than 25 inserts, including power & signal mix
  • 8 shell sizes from 11 to 25
  • Equipped with ruggedized power inserts up to 250A 
  • Several materials et platings available, with RoHS & REACH compliant versions



  • Battlefield Communication C5ISR
  • Ground Vehicles
  • Military Avionics
  • Commercial Air 
  • Navy 
  • Space
Technical information

Product benefits :

  • 38999 series III inserts 
  • M329029 type contacts
  • Many versions available : Integrated backshell, Stand-off (double flange), reduced flange,...

Materials & Platings :

  • Aluminum : Olive drab Cadmium, Black Zinc Nickel , Nickel, , Tin Zinc plated
  • Marine Bronze (unplated) 
  • Composite : Olive drab cadmium, Nickel plated
  • Stainless Steel : Passivated , Nickel plated

Contacts types & terminations :

  • More than 25 compatible inserts, including power & signal mix
  • Power contacts size 8 to 4/0
  • Crimp, Tapped holes & PC-Tails (gold & tinned versions)

Environmental Characteristics :

  • 500 mating cycles
  • -65degC to +175degC or 200degC depending on material & plating
  • From 48 to 500 hours for aluminum & stainless steel, 1000hours for marine bronze & 2000 hours for composite
  • IPX7 when mated and fully cabled

Electrical characteristics :

  • Shell to shell conductivity from 1 to 10 mO depending on materials & platings
  • Shell to shell bottoming, grounding fingers on the plug shell
  • Insulation resistance @Ambient : 5.103 mO
  • Power contact rating from 60 to 500 Amps
2 documents

Single way 250A connector – TV 23-P1

Last update : 12/03/2024

Catalog MIL-DTL-38999 & Derivates

Last update : 05/03/2024
38999 reduced flange jam nut receptacle
I/O Connectors
38999 Series

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38999 - Power description

The 38999-Power connector is designed for high power transmission in harsh environments. Derived from the MIL-DTL-38999 series, Amphenol Socapex 38999 power connectors are equipped with ruggedized power inserts that can handle up to 500A. They are available in various shell types, including MIL-DTL-38999 I (LJT), MIL-DTL-38999 III (TV-CTV), VG96912 (SJT), RNJ and RNJLP, with the 4 x 60 Amps and the 4 x 100 Amps being HE308 qualified (bayonet and rackable versions). These connectors are ideal for use in defense and avionics, as well as harsh industrial environments where high power transmission is required. They can be used for I/O power for boxes, power connectors spread on the field (drums), and electrical power generators. The 38999-Power connector offers excellent durability, with a life cycle of up to 500 cycles. They can withstand temperatures ranging from -65 Cdeg to 175 Cdeg, and keying is achieved by different key/keyway locations. These connectors have different contact ratings, including 60A (4 x 60 Amps), 100A (4 x 100 Amps), 230A (-1 x 250 Amps), and 500A (-1 x 500 Amps), with crimp or PC tail terminations available.