MCDC4M Micro Circular Dummy Connector — Overview
The MCDC4M is a 4-contact Micro Circular Male dummy connector (protective cap) designed to mate with and seal any unmated 4-contact Micro Circular female connector — whether bulkhead or inline — during storage, transit, and deployment intervals when the working connector is not in use.
Built from the same chloroprene rubber and gold-plated contact materials as the working connectors, the MCDC4M protects contact faces from biofouling, corrosion, and mechanical damage at the same rated depth as the connector it protects. It is an essential component for any subsea deployment program involving the Micro Circular connector series.
4 Contacts
Micro Dummy Connector
1,400 Bar Design Depth
Chloroprene Body
Gold-Plated Contacts
Key Design Features
- Micro Circular Male dummy connector — seals 4-contact female Micro Circular connector faces against seawater ingress, biofouling, and mechanical damage
- Same chloroprene rubber construction as working connectors — rated to the same 1,400 Bar design depth and -40°C to +60°C temperature range
- Gold-plated contacts — preserves the gold contact face of the mated working connector, preventing galvanic corrosion during storage
- Keyed interface — aligns correctly to the working connector's keying feature; cannot be incorrectly installed
- Compatible with all 4-contact Micro Circular series bulkhead and inline connectors
- 500+ mate/demate cycles — repeated installation and removal without degrading the working connector contact face
- Essential for observatory, mooring, and long-duration deployment programs — protects unused ports during unattended seabed deployments
- Available from 1 unit, standard 1–2 week lead time
Specifications
| Parameter | Specification |
|---|
| Contact Positions | 4 |
| Type | Micro Circular Dummy Connector (Protective Cap) |
| Gender | Male |
| Design Depth (mated) | 1,400 Bar / 20,300 psi |
| Open Face Pressure | 800 Bar / 11,600 psi |
| Body Material | Chloroprene rubber |
| Contact Material | Gold-plated copper alloy |
| Operating Temperature | -40°C to +60°C |
| Compatible With | All 4-contact Micro Circular series BH and IL connectors |
Typical Applications
- Protecting unmated 4-contact Micro Circular bulkhead connectors on AUV and micro-ROV chassis during deck operations
- Sealing unused junction box Micro Circular ports during long-term seabed observatory deployments
- Covering 4-contact Micro Circular inline connector faces during instrument storage and servicing
- Protecting mooring instrument connector faces during surface preparation and deployment
- Sealing AUV payload connector ports between missions
- Providing corrosion protection for spare Micro Circular connectors stored in humid environments
Request a Quote or Datasheet for the MCDC4M
Contact RV Power Group for pricing, lead times, custom cable assembly options, and full technical documentation. Engineering support available from component selection through system integration.
