MCBHRA4F 4-Pin Female Right-Angle Bulkhead Underwater Connector – Miniature Circular L-Type Series
Product Overview
The
HYSF SUBSEA MCBHRA4F 4-Pin Female Right-Angle Bulkhead Underwater Connector is a compact subsea electrical connector designed for underwater equipment requiring reliable four-channel connectivity and space-efficient installation.Belonging to the HYSF Miniature Circular Right-Angle Connector Series, the MCBHRA4F features four female electrical contacts and an integrated 90-degree right-angle configuration.Unlike conventional straight bulkhead connectors, its right-angle design directs the internal cable leads sideways from the connector mounting interface. This helps reduce axial installation clearance and simplifies cable routing inside compact underwater housings.The four-pin configuration provides a practical electrical interface for power, signal, control, and instrumentation applications.Featuring a compact Ø15.7 mm body, 316L stainless steel housing, and gold-plated electrical contacts, the MCBHRA4F is designed for demanding underwater equipment installations.The connector features IP68 waterproof protection and pressure capability up to
60 MPa (approximately 6,000 meters of seawater depth).The standard bulkhead configuration includes approximately 0.3-meter PTFE-insulated cable leads, together with the required mounting nut, washer, and O-ring.The MCBHRA4F is particularly suitable for ROVs, AUVs, underwater cameras, manipulator systems, marine sensors, sonar equipment, subsea junction boxes, and compact underwater electronic modules.
Key Features and Benefits
1. Four-Pin Female Electrical Configuration
The MCBHRA4F features four female electrical contact positions arranged in a compact miniature circular connector interface.Its four-pin configuration provides multiple electrical channels through a single bulkhead connection.Typical applications include:
- ROV power and control connections
- AUV sensor interfaces
- Underwater camera systems
- Marine instrumentation
- Pressure and temperature sensors
- Sonar and hydrophone systems
- Subsea data acquisition
- Manipulator control systems
- Underwater lighting equipment
The female socket contacts are designed to mate with compatible four-pin male connectors.The four contacts provide flexibility for allocating power, signal, and control circuits according to the approved wiring diagram.
2. Integrated 90-Degree Right-Angle Design
One of the main advantages of the MCBHRA4F is its integrated 90-degree right-angle configuration.The design directs the internal cable leads sideways instead of extending straight behind the bulkhead mounting interface.This is particularly useful when conventional straight bulkhead connectors require excessive internal installation clearance.Key advantages include:
- Reduced axial installation clearance
- Improved internal cable routing
- Better integration in compact pressure housings
- Reduced interference with nearby components
- More organized cable management
- Greater flexibility in equipment layout
The right-angle configuration is especially beneficial for compact ROV frames, AUV pressure housings, underwater camera modules, and robotic manipulator assemblies.
3. Four-Channel Electrical Connectivity
Four electrical contacts provide a practical connection interface for multiple power, signal, and control circuits.Depending on the approved electrical configuration, the contacts can be allocated to:
- Power supply
- Electrical return
- Sensor signals
- Control circuits
- Auxiliary power
- Instrumentation
- Communication channels
The four-pin configuration helps consolidate multiple electrical connections into one compact bulkhead interface.
4. 316L Stainless Steel Housing
The MCBHRA4F features a 316L stainless steel bulkhead housing designed for demanding marine environments.316L stainless steel provides corrosion resistance and mechanical strength for underwater equipment installations.Key benefits include:
- Marine-grade corrosion resistance
- Mechanical durability
- Stable bulkhead installation
- Suitability for subsea equipment
- Reliable structural support
- Long-term marine equipment integration
The housing material and surrounding equipment material should be considered together to minimize galvanic corrosion risks in seawater installations.
5. Gold-Plated Electrical Contacts
The MCBHRA4F features precision electrical contacts with a gold-plated contact surface.Gold plating provides a conductive contact surface and helps reduce oxidation at the electrical interface.The four 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.
6. Reliable O-Ring Sealing Construction
The MCBHRA4F incorporates an O-ring sealing arrangement designed for demanding underwater applications.The sealing components help protect the electrical interface and equipment housing against water ingress when correctly installed.The standard bulkhead package includes the mounting nut, washer, and O-ring.Proper installation 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.
7. IP68 Waterproof Protection
The MCBHRA4F features IP68 waterproof protection for demanding underwater applications.Its precision housing, sealing arrangement, and electrical contact assembly are designed for subsea installation.For critical underwater systems, the complete connector and equipment assembly should be qualified according to the intended operating depth and installation conditions.
8. Deep-Sea Pressure Capability up to 6,000 Meters
The MCBHRA4F 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 imaging systems
- Offshore inspection equipment
- Deep-sea sensor networks
The actual operating depth depends on the complete connector assembly, mating component, cable construction, sealing arrangement, mounting surface, and installation conditions.For critical applications, the complete installed assembly should be verified through appropriate hydrostatic pressure testing and engineering qualification.
9. Compact Bulkhead Installation
The MCBHRA4F is designed for bulkhead installation through an underwater equipment housing.Its miniature circular body and right-angle configuration help reduce internal axial clearance requirements.The standard mounting thread is
7/16-20 UNF.This mounting arrangement makes the connector suitable for compact ROV and AUV pressure housings, multi-port equipment panels, and subsea junction boxes.Always confirm the mounting dimensions and required installation clearance against the approved MCBHRA4F engineering drawing.
10. Standard 0.3-Meter PTFE Cable Leads
The MCBHRA4F is supplied with approximately 0.3-meter internal cable leads in its standard bulkhead configuration.The PTFE-insulated conductors provide electrical insulation and thermal stability for demanding equipment applications.The leads provide an electrical connection between the external subsea connector interface and internal equipment electronics.Customized cable lengths and conductor arrangements can be evaluated according to project requirements.Available customization options include:
- Alternative cable lengths
- Customized cable specifications
- Different conductor arrangements
- Customized wire identification
- Alternative conductor sizes
- Specialized cable termination requirements
- Customized wiring assignments
The exact conductor colors and pin assignments should follow the approved MCBHRA4F production wiring diagram.
11. Electrical Performance
The HYSF Micro 2–8 Pin Right-Angle Series has a reference rated current of 10 A per contact and a rated voltage of 550 V AC/DC.The series also specifies an insulation resistance of at least 200 MΩ under a 1000 V test condition.These electrical specifications make the MCBHRA4F suitable for appropriately designed power, control, and instrumentation circuits.Actual electrical performance depends on conductor size, contact loading, operating temperature, cable construction, and installation conditions.
12. Designed for Compact Subsea Equipment
The MCBHRA4F is particularly useful in applications where conventional straight bulkhead connectors are difficult to install.Its 90-degree configuration helps direct internal cable leads away from nearby mechanical components and can improve the overall layout of compact equipment.Potential integration environments include:
- Micro-ROV electronics housings
- ROV manipulator arms
- AUV sensor modules
- Compact subsea junction boxes
- Underwater camera assemblies
- Multi-port pressure housings
- Marine instrumentation packages
- Compact underwater robotic tools
- Subsea monitoring systems
The right-angle design helps simplify internal cable routing in installations where available space is limited.
13. Customization for OEM and Subsea Projects
Different underwater equipment manufacturers have different requirements for mounting dimensions, electrical wiring, and mechanical integration.HYSF SUBSEA supports customized connector configurations according to project specifications.Customization can include:
- Cable lead length
- Mounting thread specifications
- Housing materials
- Electrical configuration
- Contact assignment
- Wiring identification
- Cable specifications
- Specialized installation requirements
This flexibility makes the MCBHRA4F suitable for OEM equipment manufacturers, ROV developers, AUV manufacturers, marine research organizations, and subsea engineering companies.
MCBHRA4F Technical Specifications
| Parameter | Specification |
|---|
| Brand | HYSF SUBSEA |
| Model | MCBHRA4F |
| SKU | HYSF-MCBHRA-4F |
| Product Type | 4-Pin Female Right-Angle Bulkhead Connector |
| Connector Series | Miniature Circular L-Type |
| Number of Contacts | 4 Pins |
| Contact Gender | Female |
| Installation Type | Bulkhead / Panel Mount |
| Cable Exit | 90° Right-Angle |
| Body Diameter | Ø15.7 mm |
| Housing Material | 316L Stainless Steel |
| Contact Material | Gold-Plated Electrical Contacts |
| Mounting Thread | 7/16-20 UNF |
| Standard Bulkhead Lead Length | 0.3 m |
| Cable Insulation | PTFE |
| Rated Current | 10 A per Pin |
| Rated Voltage | 550 V AC/DC |
| Insulation Resistance | ≥200 MΩ at 1000 V |
| Waterproof Rating | IP68 |
| Pressure Rating | Up to 60 MPa |
| Approximate Working Depth | Up to 6,000 Meters |
| Operating Temperature | -60°C to +80°C |
| Mating Cycles | ≥500 |
| Standard Accessories | Mounting Nut / Washer / O-Ring |
| Warranty | 12 Months |
Engineering Note: Specifications are based on the HYSF 2026 Micro 2–8 Pin series technical catalog and MCBHRA4F product information. Confirm exact model dimensions, cable arrangement, and installation details against the approved engineering drawing before production or deployment.
Four-Pin Wiring and Contact Identification
The MCBHRA4F features four individual female electrical contact positions.The exact conductor colors and pin assignments should follow the approved MCBHRA4F 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 MCBH4F straight-bulkhead connector wire colors automatically apply to MCBHRA4F. Always use the approved pin assignment drawing for production and installation.
Compatible Connectors and Accessories
MCBHRA4M – 4-Pin Male Right-Angle Bulkhead Connector
The
MCBHRA4M is the corresponding male right-angle bulkhead connector in the HYSF Miniature Circular family.It features four male electrical contacts and a 90-degree configuration for compatible underwater equipment installations.
MCIL4M – 4-Pin Male Inline Underwater Connector
The MCIL4M is a four-pin male inline cable connector.It can be considered for compatible cable-to-bulkhead connections with the MCBHRA4F, subject to verification of the exact mating interface and contact arrangement.
MCIL4F – 4-Pin Female Inline Underwater Connector
The MCIL4F is a four-pin female inline cable connector for compatible underwater cable assemblies.It can be considered for applications requiring a female cable-mounted connection.
MCBH4M – 4-Pin Male Straight Bulkhead Connector
The MCBH4M is a conventional straight male bulkhead connector for compatible four-pin underwater connections.It can be considered for installations where a right-angle configuration is not required.
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 MCBHRA4F is not connected to its operational male connector.
Typical Applications of MCBHRA4F
1. Remotely Operated Vehicles (ROVs)
ROVs require multiple underwater electrical interfaces for cameras, sensors, manipulators, navigation systems, and communication equipment.The MCBHRA4F provides a four-pin female bulkhead interface with a right-angle configuration, helping simplify internal cable routing in compact vehicle housings.
2. Autonomous Underwater Vehicles (AUVs)
AUVs frequently incorporate multiple instruments, sensors, and electronic modules.The MCBHRA4F can be considered for suitable electrical interfaces where multi-channel connectivity and limited installation clearance are important.
3. ROV Manipulator Arms
ROV manipulator arms require compact electrical connections for control signals, sensors, and auxiliary equipment.The right-angle bulkhead configuration helps simplify cable routing around mechanical structures and confined installation spaces.
4. Underwater Cameras and Imaging Systems
Underwater imaging systems may require multiple electrical circuits for power, control, lighting, and auxiliary functions.The four-pin configuration provides flexibility for appropriately designed camera and imaging assemblies.
5. Marine Sensors and Instrumentation
Marine monitoring equipment often combines multiple sensors and measurement circuits.The MCBHRA4F provides a compact four-pin bulkhead connection for suitable marine instrumentation and underwater data acquisition systems.
6. Sonar and Hydrophone Systems
Underwater acoustic systems frequently require multiple electrical channels for sensor connections and instrumentation.The MCBHRA4F can be considered for suitable sonar, hydrophone, and marine acoustic measurement assemblies.
7. Subsea Junction Boxes
Subsea junction boxes require reliable electrical interfaces for connecting cables, sensors, and communication equipment.The right-angle configuration helps improve internal cable routing and reduce interference with nearby components.
8. Offshore Energy and Subsea Control
Offshore equipment may require electrical connections for monitoring, instrumentation, and control systems.The MCBHRA4F provides a compact connector option for qualified subsea electrical assemblies.
9. Oceanographic Research Equipment
Scientific research equipment often operates in confined pressure housings with multiple sensor connections.The right-angle bulkhead configuration can help simplify internal cable routing around compact underwater instrument packages.
Installation Guidelines
Step 1: Verify Mounting Compatibility
Confirm that the equipment panel or pressure housing is designed for the MCBHRA4F mounting configuration.Verify the 7/16-20 UNF mounting thread and required installation dimensions against the approved drawing.
Step 2: Prepare the Mounting Surface
Ensure that the mounting surface is clean, flat, and free from burrs or damage.The sealing surface should meet the required engineering specifications.
Step 3: Inspect the Sealing Components
Check the O-ring and sealing surfaces for contamination, cuts, deformation, or other visible damage.
Step 4: Install the Bulkhead Connector
Position the MCBHRA4F according to the approved mounting orientation.Use the supplied mounting nut, washer, and O-ring according to the installation instructions.
Step 5: Route the Internal Leads
Position the right-angle cable exit according to the intended cable routing direction.Ensure that the leads do not experience excessive bending or mechanical strain.
Step 6: Verify the Wiring
Confirm all four conductor assignments using the approved wiring diagram.
Step 7: Connect the Mating Connector
Align the compatible male connector with the MCBHRA4F female contact interface.Avoid forcing the connector into an incorrect position.
Step 8: Perform Electrical and Pressure Checks
Verify electrical continuity, insulation resistance, and the complete assembly’s pressure qualification according to the application 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 MCBHRA4F underwater connector?
The MCBHRA4F is a four-pin female right-angle bulkhead underwater electrical connector from the HYSF Miniature Circular L-Type Series.
Q2: What is the main advantage of the right-angle design?
Its 90-degree configuration directs the internal cable leads sideways from the bulkhead mounting interface, helping reduce axial installation clearance requirements.
Q3: How many electrical contacts does MCBHRA4F have?
The MCBHRA4F features four female electrical contacts.
Q4: What is the connector body diameter?
The nominal connector body diameter is approximately 15.7 mm.
Q5: What is the mounting thread?
The standard mounting thread is 7/16-20 UNF.
Q6: What is the rated current?
The HYSF Micro 2–8 Pin Right-Angle Series has a reference rated current of 10 A per contact.
Q7: What is the rated voltage?
The series rated voltage is 550 V AC/DC.
Q8: What is the waterproof rating?
The connector features an IP68 waterproof design.
Q9: What is the maximum working depth?
The MCBHRA4F is designed for pressure applications up to 60 MPa, corresponding to approximately 6,000 meters of seawater depth.
Q10: What is the standard bulkhead lead length?
The standard bulkhead lead length is approximately 0.3 meter.
Q11: What materials are used?
The standard bulkhead housing is manufactured from 316L stainless steel and features gold-plated electrical contacts.
Q12: Which connector mates with MCBHRA4F?
The MCBHRA4M is the corresponding male right-angle bulkhead model. The MCIL4M is a male inline cable connector option, subject to mating-interface verification.
Q13: Can the bulkhead lead length be customized?
Yes. Customized lead lengths and cable configurations are available according to project requirements.
Q14: Is MCBHRA4F suitable for ROV applications?
Yes. Its four-pin configuration and compact right-angle design make it suitable for appropriately designed ROV power, control, and sensor interfaces.
Q15: What is the expected mating life?
The HYSF Micro 2–8 Pin series technical catalog specifies at least 500 mating cycles.
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 MCBHRA4F?
The
HYSF SUBSEA MCBHRA4F 4-Pin Female Right-Angle Bulkhead Underwater Connector provides a compact electrical connection solution for demanding subsea applications.Its principal advantages include:
- Four-pin female bulkhead configuration
- Integrated 90-degree right-angle design
- Compact Ø15.7 mm body diameter
- Miniature circular construction
- 316L stainless steel housing
- Gold-plated electrical contacts
- O-ring sealing construction
- 7/16-20 UNF mounting thread
- Standard 0.3-meter PTFE bulkhead leads
- 550 V AC/DC rated voltage
- 10 A per contact rated current
- IP68 waterproof protection
- 60 MPa pressure capability
- Design depth capability up to 6,000 meters
- At least 500 mating cycles
- Standard mounting nut, washer, and O-ring
- Customized cable and mounting configurations
- 12-month product warranty
For ROV manufacturers, AUV developers, marine research organizations, and underwater equipment manufacturers, the MCBHRA4F provides a practical solution for integrating four electrical circuits into compact subsea housings.Its right-angle configuration is particularly beneficial for applications where internal installation clearance is limited and cable routing must be carefully controlled.The combination of compact construction, gold-plated contacts, subsea sealing, and high-pressure capability makes the MCBHRA4F a versatile bulkhead connector option for appropriately designed underwater electrical assemblies.
