MCBHRA3M 3-Pin Male Right-Angle Bulkhead Underwater Connector – Miniature Circular L-Type Series
Product Overview
The
HYSF SUBSEA MCBHRA3M 3-Pin Male Right-Angle Bulkhead Underwater Connector is a compact subsea electrical connector designed for underwater equipment requiring reliable three-channel connectivity and space-efficient installation.Belonging to the HYSF Miniature Circular Right-Angle Connector Series, the MCBHRA3M features three male 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.Featuring a compact Ø15.7 mm body, 316L stainless steel housing, gold-plated brass contacts, and dual O-ring sealing, the MCBHRA3M is designed for demanding subsea environments.The connector supports pressure applications up to
60 MPa (approximately 6,000 meters of seawater depth), making it suitable for deep-water ROVs, AUVs, underwater camera systems, marine sensors, and compact subsea junction boxes.The standard configuration includes three PTFE-insulated cable leads in red, black, and white, together with a bulkhead mounting arrangement featuring an M16 thread and locking ring.
Key Features and Benefits
1. Three-Pin Male Electrical Configuration
The MCBHRA3M features three male electrical contact positions arranged in a compact miniature circular connector interface.Its three-pin configuration provides a practical electrical connection for power, signal, and control applications.Typical applications include:
- ROV power connections
- AUV sensor interfaces
- Underwater camera systems
- Marine instrumentation
- Pressure and temperature sensors
- Underwater lighting equipment
- Subsea control circuits
- Marine monitoring systems
- Compact underwater electronic modules
The male contact pins are designed to mate with compatible three-pin female connectors.
2. Integrated 90-Degree Right-Angle Design
One of the main advantages of the MCBHRA3M 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 side panels, underwater camera pods, and subsea junction boxes.
3. Compact Ø15.7 mm Connector Body
The MCBHRA3M features a compact Ø15.7 mm connector body, making it suitable for equipment requiring multiple electrical interfaces within limited installation space.Its miniature circular construction helps equipment manufacturers integrate electrical connections into compact pressure housings and underwater electronic modules.The compact design is particularly useful for:
- Micro-ROV housings
- AUV sidewall connections
- Compact underwater cameras
- Multi-port subsea junction boxes
- Marine sensor assemblies
- Underwater robotic equipment
4. 316L Stainless Steel Housing
The MCBHRA3M features a 316L stainless steel 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 Brass Electrical Contacts
The MCBHRA3M features precision gold-plated brass electrical contacts.Gold plating provides a conductive contact surface and helps reduce oxidation at the electrical interface.The three male contact pins are designed to mate with corresponding female socket contacts while maintaining suitable electrical contact.The mating surfaces should be inspected before installation and kept clean to prevent contamination from affecting contact performance.
6. Dual O-Ring and Face-Seal Construction
The MCBHRA3M incorporates a dual O-ring and face-seal arrangement designed for demanding underwater applications.This sealing configuration helps protect the electrical interface and bulkhead mounting area against water ingress.The sealing arrangement is particularly important for subsea equipment exposed to high hydrostatic pressure.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 MCBHRA3M 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 Rating up to 6,000 Meters
The MCBHRA3M supports 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. M16 Bulkhead Mounting with Locking Ring
The MCBHRA3M features an M16 mounting thread and locking ring for bulkhead installation.This configuration allows the connector to be integrated into suitable equipment panels and underwater pressure housings.The mounting arrangement provides mechanical retention while maintaining the intended sealing configuration.Before installation, verify the panel thickness, mounting hole dimensions, thread engagement, and required installation clearance against the approved engineering drawing.
10. Three-Core PTFE-Insulated Cable Leads
The standard MCBHRA3M configuration includes three PTFE-insulated electrical leads.The standard conductor colors are:
- Pin 1: Red
- Pin 2: Black
- Pin 3: White
The actual pin-to-wire assignment should follow the approved production wiring diagram.PTFE insulation provides electrical insulation and thermal stability for demanding equipment applications.Customized cable lengths, conductor sizes, and wiring 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
11. 10A Per Contact Electrical Capability
The MCBHRA3M features a rated current of
10 A per contact and a rated voltage of
600 V AC/DC according to its published product specifications.Its three-contact configuration provides a practical electrical interface 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 ROV and AUV Equipment
The MCBHRA3M 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
- AUV side panels
- 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. Designed for Repeated Mating Operations
The MCBHRA3M is designed for repeated connector mating and unmating operations.Its published product specifications indicate an endurance of more than 500 mating cycles.Proper alignment and careful handling during mating help protect the contact pins and sealing surfaces.Always inspect the connector before mating and avoid forcing incorrectly aligned connectors together.
14. 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 ratings
- Contact assignment
- Wiring identification
- Cable specifications
- Specialized installation requirements
This flexibility makes the MCBHRA3M suitable for OEM equipment manufacturers, ROV developers, AUV manufacturers, marine research organizations, and subsea engineering companies.
MCBHRA3M Technical Specifications
| Parameter | Specification |
|---|
| Brand | HYSF SUBSEA |
| Model | MCBHRA3M |
| SKU | HYSF-MCBHRA-3M |
| Product Type | 3-Pin Male Right-Angle Bulkhead Connector |
| Connector Series | Miniature Circular L-Type |
| Number of Contacts | 3 Pins |
| Contact Gender | Male |
| Installation Type | Bulkhead / Panel Mount |
| Cable Exit | 90° Right-Angle |
| Body Diameter | Ø15.7 mm |
| Total Height | 33.5 mm |
| Housing Material | 316L Stainless Steel |
| Contact Material | Gold-Plated Brass |
| Sealing Structure | Dual O-Ring + Face Seal |
| Mounting Thread | M16 |
| Mounting Accessory | Locking Ring |
| Cable Type | PTFE-Insulated Leads |
| Standard Wire Colors | Red / Black / White |
| Rated Current | 10 A per Pin |
| Rated Voltage | 600 V AC/DC |
| Waterproof Rating | IP68 |
| Pressure Rating | 60 MPa |
| Approximate Working Depth | Up to 6,000 Meters |
| Operating Temperature | -20°C to +80°C |
| Mating Cycles | 500+ |
| Certification | ISO 9001:2015 |
| Warranty | 12 Months |
Engineering Note: Specifications are based on the published MCBHRA3M product information. Confirm the exact mounting dimensions, wire assignment, pressure qualification, and installation requirements against the approved engineering drawing before production or deployment.
Three-Pin Wiring and Contact Identification
The MCBHRA3M features three individual male electrical contact positions.The standard cable conductor colors are red, black, and white.The exact pin-to-wire assignments should follow the approved MCBHRA3M production wiring diagram.Before cable assembly or equipment integration, engineers should verify:
- The three contact positions.
- The male 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: Always use the approved MCBHRA3M production wiring diagram for final assembly and installation.
Compatible Connectors and Accessories
MCIL3F – 3-Pin Female Inline Underwater Connector
The
MCIL3F is a three-pin female inline cable connector designed to mate with compatible three-pin male bulkhead interfaces.It can be used with the MCBHRA3M in suitable underwater cable assemblies, subject to verification of the mating interface.
MCBH3F – 3-Pin Female Straight Bulkhead Connector
The MCBH3F is a conventional straight female bulkhead connector in the HYSF Miniature Circular family.It provides a corresponding three-pin female interface for compatible underwater equipment configurations.
MCDC3F – 3-Pin Female Protective Dummy Plug
The MCDC3F is a female protective dummy connector designed for compatible three-pin male interfaces.It helps protect the exposed mating interface when the MCBHRA3M is not connected to its operational female connector.
MCIL3M – 3-Pin Male Inline Underwater Connector
The MCIL3M is a three-pin male inline cable connector for compatible underwater cable assemblies.It can be considered for applications requiring a male cable-mounted connection.
Typical Applications of MCBHRA3M
1. Remotely Operated Vehicles (ROVs)
ROVs require multiple underwater electrical interfaces for cameras, sensors, manipulators, navigation systems, and communication equipment.The MCBHRA3M provides a three-pin male 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 MCBHRA3M can be considered for suitable electrical interfaces where three-channel connectivity and limited installation clearance are important.
3. Underwater Cameras and Imaging Systems
Underwater imaging systems may require electrical circuits for power, control, and auxiliary functions.The three-pin configuration provides a compact interface for appropriately designed camera and imaging assemblies.
4. Marine Sensors and Instrumentation
Marine monitoring equipment often combines multiple sensors and measurement circuits.The MCBHRA3M provides a compact three-pin bulkhead connection for suitable marine instrumentation and underwater data acquisition systems.
5. Subsea Junction Boxes
Subsea junction boxes require electrical interfaces for connecting cables, sensors, and auxiliary equipment.The right-angle configuration helps improve internal cable routing and reduce interference with nearby components.
6. Offshore Energy and Subsea Control
Offshore equipment may require electrical connections for monitoring, instrumentation, and control systems.The MCBHRA3M provides a compact connector option for appropriately qualified subsea electrical assemblies.
7. 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.
8. Underwater Robotic Systems
Underwater robotic systems frequently incorporate compact electrical interfaces for motors, sensors, actuators, and control electronics.The MCBHRA3M provides a practical three-pin bulkhead connection for suitable robotic equipment applications.
Installation Guidelines
Step 1: Verify Mounting Compatibility
Confirm that the equipment panel or pressure housing is designed for the MCBHRA3M M16 mounting configuration.Verify the mounting hole dimensions, panel thickness, and required installation clearance 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 dual O-rings and face-sealing surfaces for contamination, cuts, deformation, or other visible damage.
Step 4: Install the Bulkhead Connector
Position the MCBHRA3M according to the approved mounting orientation.Use the locking ring and specified installation procedure to secure the connector.
Step 5: Route the Internal Leads
Position the right-angle cable exit according to the intended cable routing direction.Ensure that the PTFE leads do not experience excessive bending or mechanical strain.
Step 6: Verify the Wiring
Confirm all three conductor assignments using the approved wiring diagram.
Step 7: Connect the Mating Connector
Align the compatible MCIL3F female connector with the MCBHRA3M male 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 MCBHRA3M underwater connector?
The MCBHRA3M is a three-pin male 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 MCBHRA3M have?
The MCBHRA3M features three male 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 published MCBHRA3M specification indicates an M16 mounting thread with a locking ring.
Q6: What is the rated current?
The rated current is 10 A per contact.
Q7: What is the rated voltage?
The rated voltage is 600 V AC/DC.
Q8: What is the waterproof rating?
The connector features an IP68 waterproof design.
Q9: What is the maximum working depth?
The MCBHRA3M is specified for pressure applications up to 60 MPa, corresponding to approximately 6,000 meters of seawater depth.
Q10: What is the standard cable configuration?
The standard configuration uses three PTFE-insulated cable leads in red, black, and white.
Q11: What materials are used?
The standard housing is manufactured from 316L stainless steel and features gold-plated brass electrical contacts.
Q12: Which connector mates with MCBHRA3M?
The MCIL3F is the corresponding female inline cable connector for compatible mating. The MCBH3F is another female bulkhead model in the Miniature Circular family; verify the specific installation arrangement before selecting it.
Q13: Can the cable lead length be customized?
Yes. Customized lead lengths and cable configurations are available according to project requirements.
Q14: Is MCBHRA3M suitable for ROV applications?
Yes. Its three-pin configuration, compact body, and right-angle design make it suitable for appropriately designed ROV power, control, and sensor interfaces.
Q15: How many mating cycles can it support?
The published product specification indicates more than 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 MCBHRA3M?
The
HYSF SUBSEA MCBHRA3M 3-Pin Male Right-Angle Bulkhead Underwater Connector provides a compact electrical connection solution for demanding subsea applications.Its principal advantages include:
- Three-pin male bulkhead configuration
- Integrated 90-degree right-angle design
- Compact Ø15.7 mm body diameter
- 316L stainless steel housing
- Gold-plated brass electrical contacts
- Dual O-ring and face-seal construction
- M16 mounting thread with locking ring
- Three-core PTFE-insulated cable leads
- 10 A per contact rated current
- 600 V AC/DC rated voltage
- IP68 waterproof protection
- 60 MPa pressure capability
- Design depth capability up to 6,000 meters
- More than 500 mating cycles
- Customized cable and mounting configurations
- 12-month product warranty
For ROV manufacturers, AUV developers, marine research organizations, and underwater equipment manufacturers, the MCBHRA3M provides a practical solution for integrating three 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, precision electrical contacts, dual sealing, and high-pressure capability makes the MCBHRA3M a practical bulkhead connector option for appropriately designed underwater electrical assemblies.
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