EDAC Connector Series 516

The EDAC 516 Series connector can be configured for cable-to-board /panel or cable-to-cable applications.

An actuating screw and nutlock which can be fitted to either the plug or the receptacle facilitates mating and provides a secure, reliable and robust interconnect.



The 8.5 amp, 516 series, connectors are available in five circuit sizes 20, 38, 56, 90 and 120. The 56 circuit version of the EDAC 516 connector series with EMI/RFI shielding device and metal cover ~ types plug and receptacle are as shown below with either actuating screw or locknut. The superbly engineered, 8.5 Amp tuning fork type hermaphroditic contact is available with crimp; solder eye; pcb or wire wrap tail.

At the heart of the 516 series design is the gold-plated hermaphroditic contact with four gas-tight, mating surfaces with a long wiping length for self-cleaning as shown below (this helps to alleviate the chance of any increased electrical resistance).

In addition to the excellent heat dissipation characteristics of the contact, the inherent ‘spring’ design also ensures that if contact pressure from two surfaces is reduced for any reason, the pressure on the other two surfaces is proportionally increased. This is very relevant when the connector is used in high shock/vibration applications like Off-Shore wind turbines.

This exceptional contact design has a forty-plus year pedigree of outstanding reliability and performance in numerous safety and mission-critical applications including oil and gas processing, off-shore alternative energy production and railway signalling. EDAC Series 516 are even incorporated into sensor devices installed in the CERN European nuclear physics project.

Key Features

Key Features

  • UL recognised
  • 0.150″ (3.81mm) Contact spacing x 0.130″ (3.30) or 0.150″ (3.81) row spacing with staggered grid
  • Plug and receptacle in 20, 38, 56, 90 or 120 contact sizes
  • Edacon Hermaphroditic contact mating design ~ Contact termination options include crimp, PCB and wire wrap
  • Mating and unmating simplified with use of actuating screws
  • Optional covers with side or top entry cable clamp in plastic or metal material available for all connector sizes + shielding kits
  • 288 different polarising combinations to distinguish mating halves
  • Versatile metal cover design permits assembly or dis-assembly after cabling is complete plus cable entry style flexibility
  • Actuating screws, locknuts, polarising hardware, covers and contacts suitable for either plug or receptacle.



  • Shell- Polycarbonate, colour: Green, or Die-cast zinc, finished with grey enamel paint
  • Insulator material- Diallyl Phthalate or Thermoplastic polyester, UL 94V-0, colour: Green or polycarbonate, colour grey
  • Contact- (Material)- Phosphor Bronze Alloy CA-510 (Plating)- Gold over nickel for entire contact


  • Current 8.5 Amp
  • Voltage -2000 V AC rms at sea level
  • Contact Resistance – 10 Milliohms Max
  • Insulation Resistance – 5000 ohm


  • Insertion and withdrawal force: 2 to 16 oz (0.56 to 4.45 N) per contact position


  • Working temperature: Connector -65C to +125C


  • Plug and receptacle – No of contacts 20, 38, 56, 90 or 120
  • EM!/RFI shielded covers for – No of contacts 20, 38, 56, 90 or 120
  • 516-020-000-301 20 With Screw
    516-020-000-302 20 With Nut
    516-038-000-301 38 With Screw
    516-038-000-302 38 With Nut
    516-056-000-301 56 With Screw
    516-056-000-302 56 With Nut
    516-090-000-301 90 With Screw
    516-090-000-302 90 With Nut
    516-120-000-101 120 With Screw
    516-120-000-102 120 With Nut
    516-020-000-401 20 With Screw
    516-020-000-402 20 With Nut
    516-038-000-401 38 With Screw
    516-038-000-402 38 With Nut
    516-056-000-401 56 With Screw
    516-056-000-402 56 With Nut
    516-090-000-401 90 With Screw
    516-090-000-402 90 With Nut
    516-120-000-201 120 With Screw
    516-120-000-202 120 With Nut
    516-230-520 20
    516-230-538 38
    516-230-556 56
    516-230-590 90
    516-230-512 120
    516-290-500 Wire Hole
    516-290-520 P.C. Tail
    516-290-541 Wirewrap
    516-290-590 Crimp
    516-280-201 Crimp Tool
    516-280-300 Extraction Tool


Design engineers, in growing numbers, are recognising the proven reliability track record of the 516 Series when seeking the ideal interconnect system for products used in safety-related and/or harsh-environment applications. For example, Network Rail, the UK railway infrastructure authority, has issued its Certificate of Acceptance for EDAC’s 516 Series connectors to be used with signalling and level crossing control panels, transmission systems and associated information systems.

The hardware features of the EDAC 516 Series allow 288 different polarising combinations ensuring the right plug can noly be mated with the right receptacle when a bank of connectors is arrayed. Thirty-one part numbers in the 516 Series range of multi-pin connectors have been issued with official Network Rail PADS numbers (Parts And Drawing System).

Metal top or side entry covers for the five available circuit sizes (20, 38, 56, 90 and 120) are available to further enhance the robustness and durability of the product.

The Edac 516 series is a direct – fit/form/function – alternative to the Elco or Varleco 8016 types.