MCILRA3F 3-Pin Female Right-Angle Inline Underwater Connector – Miniature Circular L-Type Series

Product Overview

The HYSF SUBSEA MCILRA3F 3-Pin Female Right-Angle Inline Underwater Connector is a compact subsea electrical connector designed for underwater equipment requiring reliable multi-circuit electrical connections and space-efficient cable routing.Belonging to the HYSF Miniature Circular Right-Angle Connector Series, the MCILRA3F features three female electrical contacts, a precision 316L stainless steel connector insert, and an integrated 90-degree polyurethane (PU) 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 three-pin configuration provides a practical electrical interface for power, signal, control, and instrumentation circuits.The connector features gold-plated brass contacts, double O-ring and face-seal construction, and IP68 waterproof protection. It is designed for hydrostatic pressure applications up to 60 MPa (approximately 6,000 meters of seawater depth).The MCILRA3F is particularly suitable for micro-ROVs, compact AUVs, underwater cameras, pan-tilt units, sonar systems, marine sensors, and subsea instruments where every millimeter of installation space matters.Its integrated PU right-angle boot provides a compact cable exit and helps support the cable at the connector transition.The MCILRA3F is designed for applications requiring a combination of compact dimensions, multi-channel electrical connectivity, and controlled cable routing.

Key Features and Benefits

1. Three-Pin Female Electrical Configuration

The MCILRA3F features three female electrical contact positions arranged in a compact miniature circular connector interface.Its three-pin configuration allows multiple electrical circuits to pass through a single underwater connection.Typical applications include:

• ROV power and control connections
• AUV sensor interfaces
• Underwater camera systems
• Pan-tilt control units
• Marine instrumentation
• Pressure and temperature sensors
• Sonar and hydrophone systems
• Compact actuator control
• Subsea monitoring equipment

The female socket contacts are designed to mate with corresponding compatible three-pin male interfaces.The three contacts provide flexibility for allocating power, signal, and control circuits according to the approved wiring diagram.

2. Integrated 90-Degree Right-Angle Cable Exit

One of the main advantages of the MCILRA3F is its integrated 90-degree L-shaped cable exit.The right-angle configuration directs the cable sideways from the connector mating interface instead of extending straight backward.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 integrated PU right-angle boot provides a low-profile cable transition and helps support the cable at the exit.This design is especially beneficial for compact ROVs, AUV sensor pods, underwater pan-tilt units, and subsea equipment with closely spaced connector ports.

3. Three-Channel Electrical Connectivity

Three electrical contacts provide a practical connection interface for suitable power, signal, and control applications.Depending on the approved wiring configuration, the contacts can be allocated to:

• DC power supply
• Electrical return
• Sensor signal circuits
• Control circuits
• Auxiliary electrical connections
• Compact instrumentation

The three-pin design helps reduce connector size and simplify cable assemblies.For higher-current applications, conductor size, contact rating, cable temperature rise, and operating environment should be evaluated before selecting the final configuration.

4. 316L Stainless Steel and Polyurethane Construction

The MCILRA3F features a precision 316L stainless steel connector insert with a fully molded polyurethane exterior.316L stainless steel provides corrosion resistance for demanding marine environments.The polyurethane overmold provides a protective exterior and integrates the right-angle cable transition.Key construction benefits include:

• Corrosion-resistant stainless steel insert
• Integrated polyurethane overmold
• Compact connector geometry
• Protected electrical contact assembly
• Low-profile right-angle cable exit
• Suitable construction for subsea equipment

The connector should be inspected periodically for damage, deformation, or deterioration of the molded body.

5. Double O-Ring and Face-Seal Construction

The MCILRA3F incorporates a double O-ring and face-seal arrangement.This sealing configuration supports reliable mating-interface sealing under demanding underwater conditions.Proper connector alignment and mating are essential to maintain the intended sealing performance.The sealing surfaces should be inspected before installation and kept free from dirt, debris, and mechanical damage.For deep-water applications, the complete mated connector assembly should be verified against the specified hydrostatic pressure requirements.

6. IP68 Waterproof Protection and 6,000-Meter Pressure Capability

The MCILRA3F features IP68 waterproof protection and is designed for hydrostatic pressure applications 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.

7. Gold-Plated Brass Electrical Contacts

The MCILRA3F features gold-plated brass electrical contacts.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 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.

8. Electrical Performance

The MCILRA3F product specification lists the following electrical ratings:

• Rated current: 16 A per pin
• Rated voltage: 600 V AC/DC

These ratings provide flexibility for suitable power and signal applications.Actual operating limits depend on conductor size, cable construction, temperature, contact loading, and the complete electrical system design.The connector should be operated within its approved electrical ratings.

9. PTFE Cable Configuration

The standard product configuration uses three 20 AWG PTFE-insulated conductors.PTFE insulation offers thermal stability and electrical insulation properties for demanding equipment applications.Customized cable configurations can be evaluated according to project requirements.Available customization options include:

• Alternative cable lengths
• Customized cable specifications
• Different conductor arrangements
• Customized wire identification
• Cable jacket options
• Electrical configuration adjustments
• Specialized cable termination requirements

For right-angle installations, cable exit orientation and minimum bending radius should be considered when determining the final cable routing arrangement.

10. Compact Design for Space-Constrained Subsea Equipment

The MCILRA3F is particularly useful in applications where conventional straight connectors are difficult to install.Its right-angle configuration helps direct the cable away from nearby mechanical components and can improve the overall layout of compact equipment.The connector features a nominal body diameter of Ø15.7 mm and an approximate mated length of 44.5 mm.Potential integration environments include:

• Micro-ROV electronics housings
• AUV sensor modules
• Compact subsea junction boxes
• Underwater camera assemblies
• Pan-tilt mechanisms
• Multi-port pressure housings
• Marine instrumentation packages
• Compact underwater robotic tools

The right-angle design helps simplify cable routing in installations where available space is limited.

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
• Installation requirements
• Customized electrical ratings
• Specialized cable assemblies

This flexibility makes the MCILRA3F suitable for OEM equipment manufacturers, ROV developers, AUV manufacturers, marine research organizations, and subsea engineering companies.

MCILRA3F Technical Specifications

Parameter	Specification
Brand	HYSF SUBSEA
Model	MCILRA3F
SKU	HYSF-MCILRA-3F
Product Type	3-Pin Female Right-Angle Inline Connector
Connector Series	Miniature Circular L-Type
Number of Contacts	3 Pins
Contact Gender	Female
Cable Exit	90° L-Shaped
Connector Insert	316L Stainless Steel
Overmold Material	Polyurethane (PU)
Contact Material	Gold-Plated Brass
Sealing Structure	Double O-Ring + Face Seal
Body Diameter	Ø15.7 mm
Approximate Mated Length	44.5 mm
Cable Configuration	3 × 20 AWG PTFE Leads
Rated Current	16 A per Pin
Rated Voltage	600 V AC/DC
Waterproof Rating	IP68
Pressure Rating	Up to 60 MPa
Approximate Working Depth	Up to 6,000 Meters
Mounting Thread	7/16-20 UNF
Operating Temperature	-20°C to +80°C
Primary Mating Interface	Compatible 3-Pin Male Connector
Warranty	12 Months

Engineering Note: Confirm the detailed pin assignments, cable length, connector mating dimensions, electrical ratings, and pressure qualification against the approved MCILRA3F technical drawing before production or deployment.

Three-Pin Wiring and Conductor Identification

The MCILRA3F features three individual female electrical contact positions.The exact conductor colors and pin assignments should follow the approved MCILRA3F production wiring diagram.Before cable assembly or equipment integration, engineers should verify:

1. The three contact positions.
2. The female connector mating-face orientation.
3. The corresponding conductor identification.
4. The pin-to-wire assignment.
5. The power, signal, and ground allocation.
6. Electrical continuity.
7. Insulation between individual contacts.

Customized wiring arrangements are available according to project requirements.Important: Do not assume that the standard MCIL3F straight-inline connector wire colors automatically apply to MCILRA3F. Always use the approved pin assignment drawing for production and installation.

Compatible Connectors and Accessories

MCIL3M – 3-Pin Male Inline Underwater Connector

The MCIL3M is a male inline connector in the HYSF Micro Circular family.It can be considered for compatible three-pin mating applications, subject to verification of the mating interface and mechanical configuration.

MCBH3M – 3-Pin Male Bulkhead Connector

The MCBH3M is a male bulkhead connector designed for installation through an underwater equipment housing.It provides a fixed male electrical interface for compatible three-pin cable connectors.

MCBHRA3M – 3-Pin Male Right-Angle Bulkhead Connector

The MCBHRA3M is a male right-angle bulkhead connector designed for compact underwater equipment installations.Its 90-degree configuration can help simplify cable routing around pressure housings and equipment panels.

MCDC3M – 3-Pin Male Protective Dummy Plug

The MCDC3M is a male protective dummy connector designed for compatible three-pin female interfaces.It helps protect the exposed mating interface when the MCILRA3F is disconnected from its operational male connector.Important: Confirm exact mating compatibility and contact orientation against the approved drawings before selecting accessories.

Typical Applications of MCILRA3F

1. Remotely Operated Vehicles (ROVs)

ROVs require multiple underwater electrical connections for cameras, sensors, manipulators, navigation systems, and auxiliary equipment.The MCILRA3F provides a three-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 MCILRA3F can be considered for suitable electrical interfaces where compact packaging and controlled cable routing are important.

3. Underwater Cameras and Pan-Tilt Systems

Underwater imaging systems and pan-tilt mechanisms require electrical connections for power, control, and auxiliary functions.The three-pin configuration offers a practical connection option for appropriately designed camera and actuator assemblies.

4. Marine Sensors and Instrumentation

Marine monitoring equipment often combines sensors and measurement circuits.The MCILRA3F can be considered for suitable pressure sensors, temperature sensors, and underwater measurement equipment.

5. Sonar and Hydrophone Systems

Underwater acoustic systems frequently require electrical channels for sensor connections and instrumentation.The MCILRA3F can be considered for suitable sonar, hydrophone, and marine acoustic measurement assemblies.

6. Compact Actuator Control

Underwater robotic tools and compact actuator systems may require electrical connections for power and control.The MCILRA3F provides a compact right-angle connector option for appropriately designed actuator assemblies.

7. Offshore Energy and Subsea Control

Offshore equipment may require electrical connections for monitoring, instrumentation, and control systems.The MCILRA3F 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 three-pin male interface.

Step 2: Inspect the Mating Interfaces

Check the contacts, polyurethane overmold, sealing areas, and cable entry for visible damage or contamination.

Step 3: Verify the Wiring

Confirm all three conductor assignments using the approved wiring diagram.

Step 4: Check Cable Exit Orientation

Position the MCILRA3F 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 MCILRA3F underwater connector?

The MCILRA3F is a three-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 MCILRA3F have?

The MCILRA3F features three female electrical contacts.

Q4: What is the waterproof rating?

The connector features an IP68 waterproof design.

Q5: What is the maximum working depth?

The MCILRA3F is designed for pressure applications up to 60 MPa, corresponding to approximately 6,000 meters of seawater depth.

Q6: What is the connector body diameter?

The nominal connector body diameter is approximately 15.7 mm.

Q7: What is the approximate mated length?

The approximate mated length is 44.5 mm.

Q8: What is the rated current?

The product specification lists a rated current of 16 A per contact. Actual operating limits should be verified against the complete cable and application requirements.

Q9: What is the rated voltage?

The product specification lists 600 V AC/DC.

Q10: What materials are used?

The connector features a 316L stainless steel insert, polyurethane overmold, and gold-plated brass electrical contacts.

Q11: What cable is used?

The listed cable configuration is three 20 AWG PTFE-insulated conductors.

Q12: Can the cable length be customized?

Yes. Customized cable lengths and electrical configurations can be evaluated according to project requirements.

Q13: Is MCILRA3F compatible with SubConn?

The MCILRA3F belongs to the HYSF Miniature Circular family. Exact mechanical and electrical compatibility should be verified against the relevant connector drawings before replacement or integration.

Q14: Can the three-pin wiring arrangement be customized?

Yes. Customized pin assignments and conductor arrangements can be evaluated according to project requirements.

Q15: Is MCILRA3F suitable for ROV pan-tilt control?

Yes. Its compact three-pin configuration and right-angle cable exit make it a suitable candidate for appropriately designed ROV pan-tilt and actuator control systems.

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 MCILRA3F?

The HYSF SUBSEA MCILRA3F 3-Pin Female Right-Angle Inline Underwater Connector provides a compact electrical connection solution for demanding subsea applications.Its principal advantages include:

• Three-pin female inline configuration
• Integrated 90-degree L-shaped cable exit
• Compact Ø15.7 mm body diameter
• Approximately 44.5 mm mated length
• 316L stainless steel connector insert
• Polyurethane protective overmold
• Gold-plated brass electrical contacts
• Double O-ring and face-seal construction
• IP68 waterproof protection
• 60 MPa pressure capability
• Design depth capability up to 6,000 meters
• 16 A rated current per contact
• 600 V AC/DC rated voltage
• Three 20 AWG PTFE-insulated conductors
• Customized cable configurations
• 12-month product warranty

For ROV manufacturers, AUV developers, marine research organizations, and underwater equipment manufacturers, the MCILRA3F provides a practical solution for integrating three electrical circuits into compact subsea systems.Its integrated right-angle cable exit is particularly beneficial for applications where installation clearance is limited and cable routing must be carefully controlled.The combination of stainless steel construction, polyurethane overmolding, gold-plated contacts, and high-pressure capability makes the MCILRA3F a versatile connector option for appropriately designed underwater electrical assemblies.