IL12M 12-Pin Male Inline Underwater Connector – SubConn-Compatible Wet-Mateable Plug

Product Overview

The HYSF SUBSEA IL12M is a 12-pin male inline underwater connector designed for reliable electrical connections in demanding marine and subsea environments.Featuring a molded neoprene rubber body and twelve electrical contacts, the IL12M provides a compact, multi-contact interface for underwater equipment requiring power distribution, control signals, and instrumentation connections.As part of the HYSF Standard Circular 12/16/25-pin connector family, the IL12M is designed for mating compatibility with corresponding SubConn and SEACON Standard Circular connector configurations.The connector is primarily intended to mate with the BH12F 12-pin female bulkhead underwater connector.With a rated voltage of 550V AC/DC, a rated current of 10A per contact, and a standard depth rating of 6000 meters (60 MPa) for the qualified mated assembly, the IL12M is suitable for a broad range of underwater applications.Its wet-mateable design allows mating and unmating in underwater environments when the electrical circuit is properly isolated.The standard inline configuration is supplied with a 1-meter cable, while alternative cable lengths and wiring configurations can be manufactured to match application requirements.Typical applications include ROVs, AUVs, underwater sensors, sonar equipment, oceanographic instruments, subsea inspection systems, and offshore monitoring installations.

Key Features and Benefits

1. Twelve Electrical Contacts in One Connector

The IL12M features twelve electrical contacts within a single circular mating interface.This multi-contact design allows engineers to consolidate several electrical circuits into one connector assembly.Depending on the approved cable and wiring configuration, the available contacts can be allocated to:

• Low-voltage power circuits
• Equipment control signals
• Sensor connections
• Instrumentation channels
• Communication interfaces
• Auxiliary electrical functions

Combining multiple circuits into one connector can reduce the number of separate cable connections required on underwater equipment.Actual signal compatibility, noise performance, and current distribution must be verified for the intended electrical design.

2. Wet-Mateable Underwater Connector Design

The IL12M belongs to the HYSF wet-mateable Standard Circular connector series.Wet-mateable connectors are designed to support connection and disconnection in underwater environments under the applicable operating conditions.This feature is useful for remotely operated vehicles, marine instrumentation, and subsea equipment requiring periodic cable replacement or maintenance.Important: Wet-mateable does not mean hot-pluggable.Electrical power should be disconnected before mating or unmating unless the complete system has been specifically engineered and approved for energized operation.

3. Rated for Deep-Sea Applications

The HYSF Standard Circular series is designed for underwater operation at depths of up to 6000 meters, corresponding to approximately 60 MPa hydrostatic pressure.This makes the IL12M suitable for demanding deep-water applications when installed as part of a correctly selected and qualified connector assembly.The depth rating applies to the appropriate operating configuration and must be considered together with the mating bulkhead, cable construction, terminations, and installation conditions.

4. Molded Neoprene Rubber Construction

The IL12M features a molded rubber connector body designed for marine environments.Neoprene rubber provides flexibility and mechanical resilience while helping protect the connector’s electrical contact interface.The molded construction supports environmental sealing at the connector-to-cable transition.It also provides a practical solution for underwater cable assemblies that may be handled repeatedly during equipment installation and maintenance.

5. Gold-Plated Electrical Contacts

The connector uses gold-plated electrical contacts designed to provide reliable electrical contact performance.Gold plating helps reduce contact surface oxidation and supports stable mating performance when connectors are properly maintained.Reliable contact interfaces are especially important in subsea systems where connector replacement can require significant maintenance time.

6. SubConn and SEACON Compatibility

The HYSF IL12M is designed as a compatible alternative to corresponding SubConn and SEACON Standard Circular 12-pin connector configurations.This allows the product to be considered for replacement applications, equipment upgrades, and new underwater system designs.Compatibility must be confirmed using the exact connector series, contact arrangement, mating dimensions, and applicable technical drawing.The IL12M should not be confused with HYSF Micro Circular or other connector families that use different mechanical interfaces.

7. Custom Cable Assembly Options

The standard IL12M is supplied with a 1-meter cable.Additional cable configurations can be produced according to project requirements, including:

• Customized cable lengths
• Alternative conductor specifications
• Application-specific wiring assignments
• Shielded cable configurations
• Connector-to-connector cable assemblies
• Open-ended cable terminations
• Specialized cable materials

The final configuration should be selected according to the required voltage, current, transmission characteristics, mechanical loading, and operating environment.

技術仕様

パラメータ	仕様
Brand	HYSF SUBSEA
Model	IL12M
Product Type	Male Inline Underwater Connector
Connector Series	Standard Circular
Contact Configuration	12-Pin Male
Rated Voltage	550V AC/DC
Rated Current	10A per Contact
Standard Depth Rating	6000m / 60 MPa
Mating Type	Wet-Mateable
Connector Body	Molded Neoprene Rubber
Contact Finish	Gold-Plated
Standard Cable Length	1 Meter
Cable Length Customization	Available
Primary Mating Bulkhead	BH12F
Series Compatibility	Corresponding SubConn / SEACON Standard Circular
Associated BH12F Mounting Thread	3/4-16 UNF-2A
Inline Connector Mounting Thread	Not Applicable
Main Applications	ROV, AUV, Sensors, Sonar, Offshore Instrumentation
Warranty	12 Months

Engineering note: The 3/4-16 UNF-2A thread refers to the associated BH12F bulkhead installation, not the IL12M cable-mounted plug.Current capacity, depth suitability, and electrical performance should be verified for the complete specified cable and connector assembly.

IL12M Standard Cable Wiring Color Sequence

The standard 12-core cable follows the HYSF wiring color sequence shown below.

Pin Number	Wire Color
1	Red
2	Red/White
3	Black
4	Black/White
5	Yellow
6	Yellow/White
7	Blue
8	Blue/White
9	Orange
10	Orange/White
11	Brown
12	Brown/White

This is the standard color identification arrangement for the relevant HYSF 12-pin cable configuration.For customized cable assemblies, alternative conductor identification or termination requirements may apply.The actual pin assignment should always be verified against the approved wiring drawing and electrical continuity test report.

Important Wiring Considerations

The twelve contacts are not automatically assigned to specific communication protocols.For example, a 12-pin connector may provide enough contacts for several signal or power circuits, but this does not automatically establish compatibility with Gigabit Ethernet or another high-speed communication standard.Applications involving Ethernet, high-frequency signals, or sensitive analog measurements require suitable cable design, contact allocation, shielding, and electrical verification.

Compatible Connectors and Accessories

The IL12M belongs to the HYSF Standard Circular 12-pin connector family.The primary mating arrangement is:IL12M Male Inline Connector + BH12F Female Bulkhead ConnectorRelated products include:

Model	Description	Function
IL12M	12-Pin Male Inline Connector	Cable-Mounted Male Connector
BH12F	12-Pin Female Bulkhead Connector	Primary Mating Bulkhead
DC12M	12-Pin Male Dummy Plug	Protects BH12F
IL12F	12-Pin Female Inline Connector	Opposite-Gender Inline Configuration
BH12M	12-Pin Male Bulkhead Connector	Mates with IL12F
DC12F	12-Pin Female Dummy Plug	Protects BH12M

IL12M and BH12F

During normal operation, the IL12M provides the cable-mounted electrical interface for a compatible BH12F female bulkhead connector.The BH12F is typically installed through the wall of an underwater enclosure or pressure housing.

DC12M Protective Dummy Plug

When the IL12M is disconnected, a compatible DC12M male dummy plug can be used to protect the exposed BH12F female bulkhead interface.This helps reduce contamination and mechanical exposure when the operational cable assembly is not installed.

IL12M vs. IL12F

The IL12M and IL12F are corresponding male and female inline connector configurations.

IL12M – Male Inline Connector

• 12-pin male contact configuration
• Standard molded cable assembly
• Primarily mates with BH12F
• Intended for underwater electrical connections

IL12F – Female Inline Connector

• 12-pin female contact configuration
• Standard molded cable assembly
• Primarily mates with BH12M
• Intended for underwater electrical connections

The correct connector gender must be selected according to the mating interface on the equipment.

Typical Applications

ROV and AUV Systems

Remotely operated vehicles and autonomous underwater vehicles use electrical connectors for communication, sensor interfaces, and auxiliary equipment.The IL12M offers twelve electrical contacts within a single connector assembly, making it suitable for systems requiring multiple circuits.Typical applications include:

• Navigation sensors
• Positioning instruments
• Control systems
• Equipment monitoring
• Auxiliary electronic modules

Underwater Sonar and Acoustic Equipment

Sonar systems and underwater acoustic instruments frequently require multi-core electrical connections.The IL12M can provide an interface for suitable power and instrumentation circuits.For sensitive analog signals, electrical noise, cable shielding, grounding, and conductor arrangement should be considered during system design.

Oceanographic Research Instruments

Oceanographic equipment may use multiple measurement channels for underwater environmental monitoring.The IL12M can be used in compatible instrument connections for:

• Water temperature sensors
• Pressure sensors
• Conductivity instruments
• Marine monitoring devices
• Scientific data acquisition systems

The final electrical configuration depends on the instrument requirements.

Underwater Camera Systems

Underwater cameras and imaging equipment may require power, control, and signal connections.The twelve-contact design offers flexibility for configuring multiple circuits within one connector.Video transmission compatibility depends on the camera interface and the selected cable construction.

Offshore Energy Equipment

Offshore energy installations use underwater electrical connections for monitoring equipment and auxiliary control systems.The IL12M can support suitable multi-contact interfaces in marine environments.

Subsea Inspection and Maintenance Equipment

Portable subsea inspection tools may require removable cable connections.The IL12M offers a wet-mateable connector solution for systems designed around the corresponding Standard Circular interface.

Installation and Mating Guidelines

Correct installation is essential for maintaining underwater connector performance.

Step 1: Confirm Connector Compatibility

Before installation, verify that the mating connector belongs to the correct Standard Circular 12-pin family.The primary HYSF mating bulkhead is BH12F.Check the mechanical dimensions and contact arrangement against the approved drawings.

Step 2: Inspect the Mating Interfaces

Inspect the IL12M and the corresponding female connector before mating.Check for:

• Sand or sediment
• Salt deposits
• Foreign particles
• Damaged contacts
• Deformed rubber surfaces
• Visible cuts or deterioration

Clean the connectors according to the applicable maintenance instructions.

Step 3: Disconnect Electrical Power

Isolate the electrical supply before mating or unmating.Wet-mateable connectors are not automatically approved for connection under electrical load.

Step 4: Align the Connectors

Align the male and female mating interfaces correctly.Do not force the connector into an incompatible orientation.

Step 5: Complete the Mating Procedure

Mate the connector using the applicable installation procedure.Ensure that the connector is fully seated and any required locking or retention component is correctly secured.

Step 6: Verify Cable Support

The cable should be supported so that excessive bending, pulling, or twisting forces are not transferred directly to the molded connector interface.Appropriate strain relief is particularly important for moving underwater systems.

Step 7: Perform Electrical Checks

Before operation, verify:

• Correct pin assignments
• Electrical continuity
• Insulation resistance
• Absence of unintended short circuits
• Correct cable termination

For critical subsea equipment, follow the approved system acceptance procedure.

Maintenance Recommendations

Clean After Seawater Exposure

Where appropriate, rinse connector interfaces with clean fresh water after seawater exposure and follow the recommended drying and inspection procedures.

Inspect the Molded Cable Entry

Check the molded connector-to-cable transition for visible cracks, cuts, deformation, or other mechanical damage.

Avoid Excessive Cable Pulling

Do not disconnect the connector by pulling directly on the cable.Use the appropriate connector body or retention mechanism.

Protect Unused Bulkheads

When the IL12M is removed, protect the corresponding BH12F interface with a compatible dummy plug.

Verify Electrical Performance

For repeatedly used cable assemblies, periodic continuity and insulation resistance checks can help identify developing problems.

Store Properly

Store disconnected cable assemblies in a clean environment and avoid tight bends or unnecessary mechanical compression.

Quality Control and Testing

HYSF SUBSEA manufactures underwater connector assemblies for demanding marine environments.Quality control and verification can include:

• Hydrostatic pressure testing
• Electrical continuity testing
• Insulation resistance testing
• Dielectric withstand testing
• Contact resistance measurement
• Dimensional inspection
• Visual inspection of molded components

The exact acceptance criteria depend on the connector model, cable design, and approved production specifications.For complete cable assemblies, wiring verification is especially important because incorrect pin assignments may damage connected equipment.

Frequently Asked Questions

1. What is the IL12M?

The IL12M is a 12-pin male inline underwater electrical connector from the HYSF Standard Circular series.It is designed for marine and subsea cable connections.

2. Which bulkhead connector mates with IL12M?

The primary matching model is BH12F, a 12-pin female bulkhead underwater connector.

3. Is IL12M compatible with SubConn?

HYSF Standard Circular connectors are designed for compatibility with corresponding SubConn and SEACON connector configurations.The exact model and mating dimensions should be verified before use.

4. What is the maximum operating depth?

The Standard Circular series is rated for operation at depths up to 6000 meters under the applicable qualified assembly conditions.

5. Can IL12M be connected underwater?

Yes. The IL12M belongs to a wet-mateable connector family.Electrical power should be isolated before mating or unmating.

6. What is the rated current?

The IL12M is rated for 10A per contact.The complete cable assembly must also be appropriately sized for the intended current and operating conditions.

7. What is the rated voltage?

The standard series rated voltage is 550V AC/DC.

8. What cable length is supplied?

The standard IL12M configuration is supplied with a 1-meter cable.Customized cable lengths are available.

9. Does IL12M have a mounting thread?

No. The IL12M is a cable-mounted inline connector.The related BH12F bulkhead uses a 3/4-16 UNF-2A mounting thread in the corresponding Standard 12/16/25-pin family.

10. Can the IL12M transmit Ethernet signals?

The twelve contacts may be allocated to suitable communication circuits, but the standard connector configuration should not automatically be considered certified for a particular Ethernet data rate.Cable construction, impedance, shielding, and system testing must be verified.

11. What is the difference between IL12M and IL12F?

IL12M is the male inline configuration and primarily mates with BH12F.IL12F is the female inline configuration and primarily mates with BH12M.

12. Which dummy plug protects BH12F?

The corresponding protective accessory is DC12M, a 12-pin male dummy plug.

Why Choose HYSF SUBSEA IL12M?

The HYSF IL12M combines a twelve-contact electrical interface with the flexibility of a molded underwater cable assembly.Its key advantages include:

• 12-pin male Standard Circular configuration
• SubConn and SEACON compatible mating design
• Wet-mateable construction
• 6000m standard depth rating
• 550V AC/DC rated voltage
• 10A per contact rated current
• Molded neoprene connector body
• Standard 1-meter cable assembly
• Custom cable length and wiring options
• Matching BH12F bulkhead and DC12M protective accessory

The HYSF IL12M 12-Pin Male Inline Underwater Connector is a practical choice for engineers designing reliable electrical interfaces for subsea robotics, offshore equipment, oceanographic instruments, and marine monitoring systems.