• MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male
  • MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male

MCDC3M MICRO WET DUMMY CONNECTOR 3 Pins Underwater Dummy Plug Male

MCDC3M 3-contact Micro Circular dummy connector, male (pins), protects unmated 3-contact Micro Circular connectors, chloroprene body, 7/16-20 UNF-2A thread, 7,000 m depth rating when mated.
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MCDC3M Micro Circular Dummy Connector — 3 Contacts

The MCDC3M is a 3-contact Micro Circular dummy connector in the male (pins) configuration. It is not an electrical part: it seals and protects an unmated 3-contact Micro Circular connector against seawater ingress, biofouling, grit and mechanical damage during storage, transit and service intervals.

3 Contacts Dummy Connector Male Version 7,000 m Depth Chloroprene Body IP68

Key Design Features

  • Keyed to the shell: the dummy carries the same keyway and thread as the working connector, so it cannot be fitted to the wrong contact count.
  • Same seal as the connector: the nitrile O-ring compresses against the same sealing face, keeping the unmated contacts dry.
  • Chloroprene body: the same rubber as the connector body, tolerant of deck handling, UV and the full operating temperature range.
  • Protects the wet-mate life: keeping the per-contact seals compressed and the bores clean is what preserves the 500-cycle rating of the working connector.
  • Correct pairing: the F version covers male connectors, the M version covers female connectors.

Technical Specifications

ParameterSpecification
ModelMCDC3M
TypeDummy connector (protective cap)
Contact positions3
Dummy genderMale (pins)
Mates withMCBH3F / MCIL3F
Electrical functionNone — mechanical and environmental protection only
Thread7/16-20 UNF-2A
Depth rating7,000 m (700 bar / 10,000 psi) when mated
Temperature (water)-4 °C to +60 °C
Temperature (air / storage)-40 °C to +60 °C
Mate / demate cycles> 500

Materials

ParameterSpecification
BodyChloroprene rubber
Insert / shellBrass / 316L stainless steel
O-ringNitrile rubber
Thread7/16-20 UNF-2A
ColourBlack

Ordering & Compatibility

ParameterSpecification
FitsAll 3-contact Micro Circular connectors of the opposite gender
Common pairsMCBH3F, MCIL3F
InterchangeabilitySubConn Compatible — also interchangeable with equivalent micro circular dummies

Typical Applications

Protecting unmated 3-contact ports on lights, cameras and three-wire instrument feeds.

Notes for Selection

Fit the dummy whenever the cable is removed for transport, service or storage; leaving a face open invites biofouling and grit into the socket bores.

Order with the connector Dummies are normally supplied with the matching connector so that every unused port is covered from day one. State the contact count and the gender of the connector you are protecting when ordering.