MCILRA4F 4-Pin Female Right-Angle Inline Underwater Connector – Miniature Circular L-Type Series
Product Overview
The
HYSF SUBSEA MCILRA4F 4-Pin Female Right-Angle Inline Underwater Connector is a compact subsea electrical connector designed for underwater equipment requiring reliable electrical connections and space-efficient cable routing.Belonging to the HYSF Miniature Circular Right-Angle Connector Series, the MCILRA4F features four female electrical contacts, a molded marine-grade neoprene rubber body, and an integrated 90-degree L-shaped cable exit.Unlike conventional straight inline underwater connectors, its right-angle configuration directs the cable sideways from the connector mating interface. This design helps reduce axial installation clearance and simplifies cable routing in compact underwater equipment.The four-pin configuration provides a practical electrical interface for power, signal, control, and instrumentation circuits.Designed for demanding subsea environments, the MCILRA4F features IP68 waterproof protection and pressure capability up to
60 MPa (approximately 6,000 meters of seawater depth).Its construction combines gold-plated electrical contacts with a flexible neoprene rubber body, providing a practical connection solution for ROVs, AUVs, underwater cameras, marine sensors, sonar systems, and subsea monitoring equipment.The MCILRA4F belongs to the Micro 2–8 Pin Right-Angle Series and uses a
7/16-20 UNF mounting thread.The standard inline cable length is approximately
1 meter, with customized cable lengths, conductor arrangements, and electrical configurations available according to project requirements.The MCILRA4F is particularly suitable for underwater equipment where connector dimensions, installation clearance, and controlled cable routing are important engineering considerations.
Key Features and Benefits
1. Four-Pin Female Electrical Configuration
The MCILRA4F features four female electrical contact positions arranged in a compact miniature circular connector interface.Its four-pin configuration allows multiple electrical circuits to pass through a single underwater connection.This helps simplify cable assemblies and reduces the number of individual connectors required in compact subsea systems.Typical applications include:
- ROV power and control connections
- AUV sensor interfaces
- Underwater cameras
- Marine instrumentation
- Pressure and temperature sensors
- Sonar and hydrophone systems
- Underwater lighting
- Subsea monitoring equipment
The female socket contacts are designed to mate with the corresponding MCILRA4M male right-angle inline connector.The four contacts provide flexibility for allocating power, signal, and control circuits according to the approved wiring diagram.
2. 90-Degree Right-Angle L-Shaped Cable Exit
One of the main advantages of the MCILRA4F is its integrated right-angle cable configuration.Its L-shaped design directs the cable approximately 90 degrees away from the connector mating axis.This is particularly useful when conventional straight inline connectors require excessive installation clearance.Key advantages include:
- Reduced axial installation clearance
- Controlled cable routing
- Improved integration in compact housings
- Reduced interference with adjacent components
- More organized cable management
- Greater flexibility in equipment layout
The right-angle configuration is especially beneficial for compact ROVs, AUV electronics, underwater camera housings, and equipment with multiple closely spaced connector ports.For equipment manufacturers, this design provides additional flexibility when planning cable exits around pressure housings and mechanical structures.
3. Four-Channel Electrical Connectivity
Four electrical contacts provide practical connection capacity within a compact underwater connector.This makes the MCILRA4F suitable for systems requiring several independent electrical circuits through a single connection point.Depending on the approved wiring configuration, individual contacts can be allocated to:
- Sensor power
- Measurement signals
- Control circuits
- Auxiliary power
- Instrumentation
- Communication interfaces
Consolidating multiple circuits into one connector can simplify cable management and reduce the number of interfaces required on an underwater equipment housing.For sensitive signal applications, cable shielding, conductor arrangement, impedance, and electrical isolation requirements should be evaluated separately.
4. IP68 Waterproof Construction
The MCILRA4F features an IP68 waterproof design for demanding underwater applications.Its molded marine-grade neoprene rubber body and precision connector construction support reliable sealing in marine environments.The IP68 specification identifies its protection against water ingress under applicable test conditions.For deep-water installations, the complete mated connector assembly must also meet the specified hydrostatic pressure requirements.
5. Deep-Sea Pressure Capability up to 6,000 Meters
The MCILRA4F is designed for underwater applications at pressures of up to
60 MPa, corresponding to approximately 6,000 meters of seawater depth.This makes it suitable for consideration in demanding deep-sea electrical systems.Potential applications include:
- Deep-water ROV systems
- Autonomous underwater vehicles
- Oceanographic research instruments
- Subsea monitoring systems
- Marine scientific equipment
- Underwater cameras
- Offshore inspection equipment
- Deep-sea sensor networks
The actual operating depth depends on the complete connector assembly, mating component, cable construction, sealing arrangement, and installation conditions.For critical applications, the complete mated assembly should be verified through appropriate hydrostatic pressure testing and engineering qualification.
6. Gold-Plated Electrical Contacts
The MCILRA4F features gold-plated electrical contacts designed for reliable electrical mating in underwater applications.Gold plating provides a conductive contact surface and helps reduce oxidation at the electrical interface.The female socket contacts are designed to receive corresponding male contact pins while maintaining suitable electrical contact.The electrical mating surfaces should be inspected before installation and kept clean to prevent contamination from affecting contact performance.Correct alignment during mating is important to protect the electrical contacts and maintain reliable connections.
7. Marine-Grade Neoprene Rubber Connector Body
The MCILRA4F features a molded marine-grade neoprene rubber connector body.Neoprene is commonly used in underwater connector construction because of its flexibility and suitability for marine environments.Its molded construction supports the electrical contact assembly and cable entry while providing a compact and flexible connector structure.Key benefits include:
- Flexible rubber construction
- Compact connector geometry
- Suitability for marine environments
- Integrated cable support
- Practical installation and handling
- Resistance to routine mechanical wear
The connector body should be inspected periodically for cuts, cracks, deformation, and other visible signs of damage.
8. Standard One-Meter Cable and Customization
The standard MCILRA4F inline configuration is supplied with approximately
1 meter of underwater cable.This provides a practical cable length for many subsea instruments and underwater equipment assemblies.Customized cable configurations can be considered according to project requirements.Available customization options include:
- Alternative cable lengths
- Customized cable specifications
- Different conductor arrangements
- Customized wire identification
- Cable jacket options
- Customized electrical configurations
- Specialized cable termination requirements
For right-angle installations, cable exit orientation and minimum bending radius should be considered together when determining the final cable length and routing arrangement.
9. Designed for Compact Subsea Equipment
The MCILRA4F is particularly useful in applications where conventional straight connectors are difficult to install.Its 90-degree cable exit helps direct the cable away from nearby mechanical components and can improve the overall layout of compact equipment.Potential integration environments include:
- Micro-ROV electronics housings
- AUV sensor modules
- Compact subsea junction boxes
- Underwater camera assemblies
- Multi-port pressure housings
- Marine instrumentation packages
The right-angle configuration helps simplify cable routing without requiring additional external cable bends immediately behind the connector.
10. Miniature Circular Interface for Subsea Applications
The HYSF MCILRA4F belongs to the Miniature Circular Right-Angle Connector Series.It is designed to mate with the corresponding MCILRA4M male inline connector.This makes it suitable for consideration in new underwater equipment designs and compatible replacement applications.Potential uses include:
- Replacement underwater cable connectors
- ROV system upgrades
- AUV instrumentation
- Marine research equipment
- Offshore inspection systems
- OEM underwater cable assemblies
For cross-brand replacement applications, the exact contact arrangement, mating dimensions, and retention mechanism should be checked before installation.
11. Customization for OEM and Subsea Projects
Different underwater equipment manufacturers have different requirements for electrical wiring, cable length, and mechanical integration.HYSF SUBSEA supports customized connector configurations according to project specifications.Customization can include:
- Cable length
- Cable construction
- Electrical configuration
- Contact assignment
- Wiring identification
- Mounting thread specifications
- Installation requirements
- Customized electrical ratings
This flexibility makes the MCILRA4F suitable for OEM equipment manufacturers, ROV developers, AUV manufacturers, marine research organizations, and subsea engineering companies.
MCILRA4F Technical Specifications
| Parameter | Specification |
|---|
| Brand | HYSF SUBSEA |
| Model | MCILRA4F |
| SKU | HYSF-MCILRA-4F |
| Product Type | Female Right-Angle Inline Underwater Connector |
| Connector Series | Miniature Circular L-Type |
| Pin Series | Micro 2–8 Pin |
| Number of Contacts | 4 Pins |
| Contact Gender | Female |
| Cable Exit | 90° L-Shaped / Right-Angle |
| Connector Body | Marine-Grade Neoprene Rubber |
| Contact Finish | Gold-Plated |
| Waterproof Rating | IP68 |
| Pressure Rating | Up to 60 MPa |
| Approximate Working Depth | Up to 6,000 Meters |
| Mounting Thread | 7/16-20 UNF |
| Standard Cable Length | 1.0 Meter |
| Primary Mating Connector | MCILRA4M |
| Customization | Cable Length, Mounting Thread and Electrical Configuration |
| Warranty | 12 Months |
Engineering Note: Confirm the actual electrical ratings, detailed pin assignments, mounting configuration, cable specification, and pressure qualification against the approved MCILRA4F technical documentation.
Four-Pin Wiring and Conductor Identification
The MCILRA4F features four individual female electrical contact positions.The exact conductor colors and pin assignments should follow the approved MCILRA4F production wiring diagram.Before cable assembly or equipment integration, engineers should verify:
- The four contact positions.
- The female connector mating-face orientation.
- The corresponding conductor identification.
- The pin-to-wire assignment.
- The power, signal, and ground allocation.
- Electrical continuity.
- Insulation between individual contacts.
Customized wiring arrangements are available according to project requirements.
Important: Do not assume that the standard MCIL4F straight-inline connector wire colors automatically apply to MCILRA4F. Always use the approved pin assignment drawing for production and installation.
Compatible Connectors and Accessories
MCILRA4M – 4-Pin Male Right-Angle Inline Connector
The
MCILRA4M is the corresponding male inline connector in the HYSF Miniature Circular Right-Angle Series.It is designed to mate with the MCILRA4F for compatible cable-to-cable underwater electrical connections.Both connectors feature right-angle cable exits, making them suitable for installations requiring controlled cable routing on both sides of the connection.
Typical connection:MCILRA4M Male Inline + MCILRA4F Female InlineThis combination provides a four-contact electrical connection between compatible underwater cable assemblies.
MCBHRA4M – 4-Pin Male Right-Angle Bulkhead Connector
The MCBHRA4M is a male right-angle bulkhead configuration in the HYSF Miniature Circular family.It provides a fixed male connector interface through an underwater equipment housing.The exact mating interface, mounting dimensions, and connector orientation should be verified against the approved engineering drawing.
MCBHRA4F – 4-Pin Female Right-Angle Bulkhead Connector
The MCBHRA4F is the corresponding female right-angle bulkhead option for compatible four-pin underwater systems.It provides a fixed female connector interface through an underwater equipment housing.
MCDC4M – 4-Pin Male Protective Dummy Plug
The MCDC4M is a male protective dummy connector designed for compatible four-pin female interfaces.It helps protect the exposed mating interface when the MCILRA4F is disconnected from its operational male connector.
MCDC4F – 4-Pin Female Protective Dummy Plug
The MCDC4F is a female protective dummy connector designed for compatible four-pin male interfaces.It helps protect the exposed mating interface when the MCILRA4M is disconnected.
Typical Applications of MCILRA4F
1. Remotely Operated Vehicles (ROVs)
ROVs require multiple underwater electrical connections for cameras, sensors, manipulators, navigation systems, and auxiliary equipment.The MCILRA4F provides a four-pin female connection with a right-angle cable exit, helping simplify cable routing in compact vehicle structures.
2. Autonomous Underwater Vehicles (AUVs)
AUVs frequently incorporate multiple instruments and electronic modules.The MCILRA4F can be considered for suitable electrical interfaces where compact packaging and controlled cable routing are important.
3. Underwater Cameras and Imaging Systems
Underwater imaging systems may require multiple electrical circuits for power, control, lighting, and auxiliary functions.The four-pin configuration offers flexibility for appropriately designed camera and imaging assemblies.Actual video transmission capability depends on the complete cable design and signal requirements.
4. Marine Sensors and Instrumentation
Marine monitoring equipment often combines sensors and measurement circuits.The four-pin configuration can support suitable electrical interfaces for environmental monitoring, pressure measurement, and underwater data acquisition equipment.
5. Sonar and Hydrophone Systems
Underwater acoustic systems frequently require electrical channels for sensor connections and instrumentation.The MCILRA4F can be considered for suitable sonar, hydrophone, and marine acoustic measurement assemblies.
6. Underwater Lighting Systems
Underwater lighting equipment requires reliable electrical connections for power and control.The MCILRA4F provides a compact connector option for appropriately designed underwater lighting assemblies.
7. Offshore Energy and Subsea Control
Offshore equipment may require electrical connections for monitoring, instrumentation, and control systems.The MCILRA4F provides a compact connector option for qualified subsea electrical assemblies.
8. Oceanographic Research Equipment
Scientific research equipment often operates in confined pressure housings with multiple sensor connections.The right-angle configuration can help simplify cable routing around compact underwater instrument packages.
Installation Guidelines
Step 1: Verify Connector Compatibility
Confirm that the mating connector is a compatible four-pin male interface, such as MCILRA4M.
Step 2: Inspect the Mating Interfaces
Check the contacts, molded rubber body, sealing areas, and cable entry for visible damage or contamination.
Step 3: Verify the Wiring
Confirm all four conductor assignments using the approved wiring diagram.
Step 4: Check Cable Exit Orientation
Position the MCILRA4F so its right-angle cable exit follows the intended routing direction.Ensure that the cable does not experience excessive bending or mechanical strain.
Step 5: Align the Connectors
Align the male and female interfaces according to the approved mating orientation.Avoid forcing the connector into an incorrect position.
Step 6: Complete the Mating Operation
Secure the connector using the approved coupling and retention arrangement.
Step 7: Perform Electrical Checks
Verify continuity and insulation resistance according to the application requirements.
Step 8: Verify the Complete Assembly
Before underwater deployment, confirm that the connector, mating component, cable, and installation meet the intended electrical and pressure requirements.
Quality Control and Testing
Depending on the ordered configuration and project requirements, HYSF SUBSEA quality-control procedures may include:
- Visual inspection
- Dimensional verification
- Contact inspection
- Electrical continuity testing
- Insulation resistance measurement
- Contact resistance measurement
- Cable identification checks
- Mating compatibility verification
- Mechanical inspection
- Hydrostatic pressure testing
- Dielectric withstand testing where applicable
The applicable test procedures and acceptance criteria should be established according to the approved connector configuration and intended operating environment.
Frequently Asked Questions
Q1: What is the MCILRA4F underwater connector?
The MCILRA4F is a four-pin female right-angle inline underwater electrical connector from the HYSF Miniature Circular L-Type Series.
Q2: What is the main advantage of the right-angle design?
Its L-shaped configuration directs the cable approximately 90 degrees away from the connector mating axis, helping reduce straight-line installation clearance requirements.
Q3: How many electrical contacts does MCILRA4F have?
The MCILRA4F features four female electrical contacts.
Q4: What is the waterproof rating?
The connector features an IP68 waterproof design.
Q5: What is the maximum working depth?
The MCILRA4F is designed for pressure applications up to 60 MPa, corresponding to approximately 6,000 meters of seawater depth.
Q6: What is the mounting thread?
The MCILRA4F belongs to the Micro 2–8 Pin Right-Angle Series and uses a 7/16-20 UNF mounting thread.
Q7: What is the standard cable length?
The standard inline cable length is approximately 1 meter.
Q8: Can the cable length be customized?
Yes. Customized cable lengths and electrical configurations are available according to project requirements.
Q9: What material is used for the connector body?
The connector body is manufactured from marine-grade neoprene rubber.
Q10: What is the contact surface finish?
The electrical contacts feature gold plating.
Q11: Which connector mates with MCILRA4F?
The primary corresponding male inline connector is MCILRA4M.
Q12: Can MCILRA4F be used with a bulkhead connector?
A compatible four-pin male bulkhead interface can be selected according to the required mechanical configuration. Verify the exact mating interface before ordering.
Q13: Is MCILRA4F compatible with SubConn?
The MCILRA4F belongs to the HYSF Miniature Circular family and is designed for corresponding compatible interfaces. Exact mechanical and electrical compatibility should be verified against the relevant connector drawings.
Q14: Can the four-pin wiring arrangement be customized?
Yes. Customized pin assignments and conductor arrangements can be evaluated according to project requirements.
Q15: Is MCILRA4F suitable for Ethernet?
The four-pin configuration is generally intended for suitable power and signal circuits. Standard Ethernet applications requiring four differential pairs need eight contacts. Ethernet compatibility must therefore be evaluated against the actual interface and system requirements.
Q16: What is the warranty period?
The standard HYSF SUBSEA product warranty is 12 months, subject to the applicable warranty terms.
Why Choose HYSF SUBSEA MCILRA4F?
The
HYSF SUBSEA MCILRA4F 4-Pin Female Right-Angle Inline Underwater Connector provides a compact electrical connection solution for demanding subsea applications.Its principal advantages include:
- Four-pin female inline configuration
- Integrated 90-degree L-shaped cable exit
- Compact miniature circular design
- Marine-grade neoprene rubber body
- Gold-plated electrical contacts
- IP68 waterproof construction
- 60 MPa pressure capability
- Design depth capability up to 6,000 meters
- 7/16-20 UNF mounting thread
- Standard 1-meter inline cable
- Customized cable lengths and electrical configurations
- Compatible female and male right-angle inline connector options
- Compatible bulkhead and protective dummy options
- 12-month product warranty
For ROV manufacturers, AUV developers, marine research organizations, and underwater equipment manufacturers, the MCILRA4F provides a practical solution for integrating multiple electrical circuits into compact subsea systems.Its right-angle cable exit is particularly beneficial for applications where installation clearance is limited and cable routing must be carefully controlled.The combination of four contacts, flexible neoprene construction, and high-pressure capability makes the MCILRA4F a versatile connector option for appropriately designed underwater electrical assemblies.
