The HYSF SUBSEA DC4M 4-Pin Male Dummy Plug Underwater Connector<\/strong> is a protective subsea connector accessory designed to safeguard unmated female electrical connector interfaces from seawater, sediment, contamination, and mechanical damage.<\/p>\n As part of the HYSF Standard Circular connector family, the DC4M features a four-position male mating interface designed to fit compatible 4-pin female underwater connectors.<\/p>\n It is primarily used with the BH4F 4-Pin Female Bulkhead Underwater Connector<\/strong>, providing environmental protection when the normal electrical cable connector is disconnected.<\/p>\n The DC4M is suitable for underwater equipment requiring dependable connector protection during storage, transportation, maintenance, deployment, and periods of temporary disconnection.<\/p>\n Its SubConn-compatible Standard Circular design makes it a practical accessory for ROVs, AUVs, underwater sensors, oceanographic instruments, offshore monitoring systems, and other marine engineering applications.<\/p>\n Unlike a functional electrical cable connector, the DC4M is intended for protective sealing rather than electrical power or signal transmission<\/strong>.<\/p>\n Underwater electrical connectors are precision components whose reliable operation depends on the condition of their mating and sealing surfaces.<\/p>\n When a functional cable connector is disconnected, the exposed female receptacle may come into contact with seawater, dirt, suspended sediment, and other environmental contaminants.<\/p>\n The DC4M provides a protective interface for compatible female connectors.<\/p>\n Its primary functions include:<\/p>\n Using an appropriately selected dummy plug can reduce the risk of contamination-related maintenance issues and support reliable subsequent electrical connections.<\/p>\n The DC4M features a male mating configuration corresponding to the four-contact arrangement of compatible Standard Circular female connectors.<\/p>\n Its protective interface is designed to fit the matching female connector geometry.<\/p>\n This configuration makes it particularly suitable for protecting female bulkhead receptacles installed on subsea equipment housings.<\/p>\n The four-position designation identifies the connector interface configuration.<\/p>\n It does not mean that the dummy plug is intended to function as a four-conductor electrical cable connector.<\/p>\n The DC4M is a protective accessory, not a normal wired male connector.<\/p>\n The DC4M is the corresponding protective dummy plug for the BH4F 4-Pin Female Bulkhead Underwater Connector<\/strong>.<\/p>\n The BH4F is a panel-mounted connector used to provide an electrical interface through the wall of a watertight equipment enclosure.<\/p>\n During normal operation, the BH4F can be connected to the IL4M 4-Pin Male Inline Underwater Connector<\/strong>.<\/p>\n When the IL4M cable assembly is removed, the DC4M can be installed on the BH4F to cover and protect the exposed female mating interface.<\/p>\n This arrangement is useful for underwater equipment that requires periodic cable disconnection, sensor replacement, maintenance, or storage.<\/p>\n The HYSF DC4M belongs to the Standard Circular series, which is designed for compatibility with corresponding SubConn and SEACON underwater connector interfaces.<\/p>\n Its mating configuration allows it to be considered for use with matching four-contact female Standard Circular connectors.<\/p>\n This makes the DC4M suitable for:<\/p>\n Compatibility should be confirmed against the exact connector model, contact arrangement, and mating dimensions.<\/p>\n The DC4M should not be confused with the MCDC4M<\/strong>, which belongs to the smaller Micro Circular connector series.<\/p>\n Although both products are four-position male dummy plugs, they use different mating interfaces.<\/p>\n The HYSF Standard Circular connector family is designed for demanding underwater environments, including applications at depths of up to 6,000 meters.<\/p>\n The DC4M is intended to provide protective coverage for compatible female connector interfaces used in marine and subsea equipment.<\/p>\n These environments may involve:<\/p>\n The pressure and sealing performance of the protected assembly depend on the specific dummy plug configuration, mating connector, installation condition, and applicable qualification requirements.<\/p>\n For critical deep-sea applications, the complete protected connector assembly should be verified against the intended operating pressure.<\/p>\n The standard DC4M uses a durable molded protective body based on neoprene rubber construction.<\/p>\n Neoprene is commonly used in subsea connector systems because it provides a flexible sealing interface suitable for marine applications.<\/p>\n The molded body helps provide protective contact with the corresponding female connector geometry.<\/p>\n Proper inspection and maintenance are important for preserving the condition of the protective surfaces.<\/p>\n Before installing the DC4M, the user should check for:<\/p>\n A damaged or contaminated dummy plug should not be installed on a sensitive underwater connector interface.<\/p>\n The DC4M provides a straightforward method for protecting compatible female connectors when a functional cable assembly is disconnected.<\/p>\n A typical installation procedure includes:<\/p>\n The DC4M should be removed before reconnecting the functional electrical cable assembly.<\/p>\n Important:<\/strong> The DC4M is a protective dummy plug rather than a functional electrical cable connector. Electrical voltage and current ratings assigned to wired connectors should not be interpreted as transmission ratings for this accessory.<\/p>\n The three products serve different functions within the same underwater connector system.<\/p>\n The BH4F is a four-contact female bulkhead connector installed through the wall of a watertight equipment enclosure.<\/p>\n It provides an electrical connection between internal equipment wiring and external underwater cable assemblies.<\/p>\n The IL4M is a functional four-contact male inline connector.<\/p>\n It is normally attached to an underwater cable and is used to transmit power or signals between compatible equipment.<\/p>\n When mated with the BH4F, it provides a functional electrical connection.<\/p>\n The DC4M is used when the IL4M cable connector is disconnected.<\/p>\n Instead of transmitting electricity, the DC4M provides protective coverage for the exposed BH4F female mating interface.<\/p>\n BH4F Female Bulkhead + IL4M Male Inline Connector<\/strong><\/p>\n This arrangement provides the functional electrical connection.<\/p>\n BH4F Female Bulkhead + DC4M Male Dummy Plug<\/strong><\/p>\n This arrangement protects the connector interface when the electrical cable is disconnected.<\/p>\n Using the correct accessory helps maintain the condition of the connector during periods when the equipment is not actively connected.<\/p>\n Underwater electrical connectors are exposed to challenging environments throughout their operating life.<\/p>\n Even when the equipment is not submerged, connector interfaces can be affected by salt spray, dust, accidental impacts, and contamination during handling.<\/p>\n Unprotected connector surfaces may require additional cleaning or inspection before the next deployment.<\/p>\n A suitable dummy plug helps protect the mating interface during:<\/p>\n Protective accessories are especially useful for systems with removable sensors, interchangeable instruments, and multiple external electrical connections.<\/p>\n For subsea equipment operators, including dummy plugs in the maintenance accessory package can support more consistent connector handling procedures.<\/p>\n Remotely operated vehicles frequently use detachable underwater connectors for cameras, lights, sensors, and auxiliary components.<\/p>\n When a compatible BH4F female bulkhead connector is not connected to its normal cable, the DC4M can protect the exposed mating interface.<\/p>\n Autonomous underwater vehicles often include modular sensor assemblies and removable instruments.<\/p>\n The DC4M can provide protection for compatible female electrical ports when external equipment is removed for inspection or maintenance.<\/p>\n Marine sensors may be disconnected for calibration, repair, or replacement.<\/p>\n After removing the functional cable, the DC4M can be used to cover the corresponding female bulkhead connector.<\/p>\n Scientific instruments are often deployed and recovered repeatedly.<\/p>\n Protective dummy plugs help keep connector interfaces covered during vessel deck handling, transportation, and storage.<\/p>\n Offshore equipment may require temporary disconnection of electrical monitoring cables.<\/p>\n The DC4M provides a protective accessory for corresponding Standard Circular four-contact female interfaces.<\/p>\n Underwater imaging and lighting systems often use detachable electrical connections.<\/p>\n The DC4M can help protect compatible female connector ports when the functional cable assemblies are removed.<\/p>\n Examine the female mating interface for visible damage, contamination, or abnormal wear.<\/p>\n Ensure that the interface is suitable for receiving the protective dummy plug.<\/p>\n Remove salt deposits, sediment, and debris using the cleaning methods recommended for the connector materials.<\/p>\n Avoid abrasive tools or cleaning techniques that could damage sealing surfaces.<\/p>\n The DC4M is a male protective plug designed for compatible female connector interfaces.<\/p>\n It should not be used with male bulkhead connectors such as BH4M.<\/p>\n For BH4M, the corresponding protective dummy plug is DC4F.<\/p>\n The DC4M belongs to the Standard Circular series.<\/p>\n For smaller Micro Circular connectors, the corresponding MCDC-series protective accessories should be selected.<\/p>\n The protective plug should be installed using the appropriate alignment and mating procedure.<\/p>\n Excessive force or incorrect installation can damage the mating connector.<\/p>\n For equipment intended to operate at significant underwater depths, the complete protected connector assembly should meet the required pressure and sealing qualifications.<\/p>\n The presence of a dummy plug alone does not establish the pressure rating of the equipment enclosure.<\/p>\n The DC4M is a four-position male protective dummy plug designed to cover compatible female Standard Circular underwater connectors when they are not connected to a functional electrical cable.<\/p>\n The DC4M is primarily intended for the BH4F 4-Pin Female Bulkhead Underwater Connector<\/strong> and corresponding compatible female Standard Circular interfaces.<\/p>\n No.<\/p>\n The IL4M is a functional male inline connector with an electrical cable.<\/p>\n The DC4M is a protective dummy plug and is not intended for electrical power or signal transmission.<\/p>\n The DC4M has a male interface and protects compatible female connectors.<\/p>\n The DC4F has a female interface and protects compatible male connectors.<\/p>\n The DC4M is designed for corresponding SubConn Standard Circular four-contact interfaces.<\/p>\n The exact connector model and mating geometry should be confirmed before use.<\/p>\n The DC4M is intended for subsea connector protection applications.<\/p>\n The allowable operating depth depends on the specific configuration and qualified mating assembly.<\/p>\n No.<\/p>\n The standard DC4M is a protective accessory rather than an electrical transmission connector.<\/p>\n No.<\/p>\n The standard DC4M is a protective dummy plug and does not require an electrical cable.<\/p>\n No.<\/p>\n The DC4M belongs to the Standard Circular series, while MCDC4M belongs to the Micro Circular series.<\/p>\n They have different mating interfaces.<\/p>\n Yes.<\/p>\n The DC4M is useful for protecting compatible female connector interfaces during equipment storage, transportation, maintenance, and deployment preparation.<\/p>\n No.<\/p>\n The standard DC4M is a protective dummy plug, not an electrical shorting connector.<\/p>\n A shorting function requires a separately specified design.<\/p>\n HYSF SUBSEA can evaluate customized protective plug configurations according to the connector interface and project requirements.<\/p>\n The HYSF SUBSEA DC4M 4-Pin Male Dummy Plug Underwater Connector<\/strong> provides a practical solution for protecting compatible female underwater connectors when functional electrical cables are disconnected.<\/p>\n Its Standard Circular mating interface, durable neoprene rubber construction, and compatibility with the BH4F Female Bulkhead Connector<\/strong> make it useful for ROVs, AUVs, oceanographic instruments, underwater sensors, and offshore monitoring equipment.<\/p>\n By helping shield sensitive mating interfaces from contamination and handling damage, the DC4M supports proper connector maintenance and equipment preparation.<\/p>\n For subsea systems requiring detachable electrical connections, the DC4M is a useful protective accessory for long-term underwater equipment management.<\/p>","protected":false},"excerpt":{"rendered":" The HYSF SUBSEA DC4M 4-Pin Male Dummy Plug Underwater Connector<\/strong> is a protective accessory designed to safeguard unmated female underwater connector interfaces from seawater, sediment, debris, and mechanical damage.<\/p>\n As part of the SubConn-compatible Standard Circular Series<\/strong>, the DC4M features a four-position male mating interface designed for compatible 4-pin female underwater connectors, particularly the BH4F Female Bulkhead Connector<\/strong>.<\/p>\n When the functional IL4M male inline cable connector is disconnected, the DC4M can be installed to protect the exposed BH4F female interface.<\/p>\n Key Specifications:<\/strong><\/p>\n The DC4M is suitable for ROVs, AUVs, underwater sensors, oceanographic instruments, offshore monitoring systems, and marine research equipment.<\/p>\n It is particularly useful during equipment maintenance, cable replacement, transportation, storage, and deployment preparation.<\/p>\n Its molded protective construction helps reduce exposure of the mating interface to seawater contamination and handling damage.<\/p>\n Important:<\/strong> The DC4M is a protective dummy plug rather than a functional electrical connector or shorting plug. The exact mating compatibility and pressure suitability should be confirmed for the intended underwater connector assembly.<\/p>","protected":false},"featured_media":9270,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[30],"product_cat":[32],"product_tag":[],"class_list":["post-1734","product","type-product","status-publish","has-post-thumbnail","product_brand-hysf","product_cat-standard-circular-connectors","pa_body-material-neoprene-rubber-standard","pa_connector-type-dummy-plug","pa_electrical-rating-550v-10a","pa_mounting-thread-5-8-18-unf","pa_number-of-contacts-4-pin","pa_series-standard-series","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/product\/1734","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/comments?post=1734"}],"version-history":[{"count":3,"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/product\/1734\/revisions"}],"predecessor-version":[{"id":9292,"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/product\/1734\/revisions\/9292"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/media\/9270"}],"wp:attachment":[{"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/media?parent=1734"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/product_brand?post=1734"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/product_cat?post=1734"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hysfsubsea.com\/ja\/wp-json\/wp\/v2\/product_tag?post=1734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Key Features of the DC4M Male Dummy Plug<\/h2>\n
1. Protection for Unmated Female Connectors<\/h3>\n
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2. Four-Position Male Mating Interface<\/h3>\n
3. Compatible with BH4F Female Bulkhead Connectors<\/h3>\n
4. SubConn Compatible Standard Circular Design<\/h3>\n
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5. Designed for Demanding Subsea Environments<\/h3>\n
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6. Durable Neoprene Rubber Construction<\/h3>\n
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7. Convenient Installation and Removal<\/h3>\n
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DC4M Technical Specifications<\/h2>\n
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\n \u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n \u4ed5\u69d8<\/th>\n<\/tr>\n \n Manufacturer<\/td>\n HYSF SUBSEA<\/td>\n<\/tr>\n \n Model Number<\/td>\n DC4M<\/td>\n<\/tr>\n \n Product Name<\/td>\n 4-Pin Male Dummy Plug<\/td>\n<\/tr>\n \n Connector Series<\/td>\n Standard Circular<\/td>\n<\/tr>\n \n Product Category<\/td>\n Underwater Connector Protective Accessory<\/td>\n<\/tr>\n \n Connector Gender<\/td>\n Male<\/td>\n<\/tr>\n \n Interface Configuration<\/td>\n 4-Position<\/td>\n<\/tr>\n \n Standard Body Material<\/td>\n Neoprene Rubber<\/td>\n<\/tr>\n \n Primary Function<\/td>\n Protection of Unmated Female Connectors<\/td>\n<\/tr>\n \n Recommended Matching Bulkhead<\/td>\n BH4F<\/td>\n<\/tr>\n \n Compatible Interface<\/td>\n Corresponding SubConn Standard Circular 4-Pin Female Connector<\/td>\n<\/tr>\n \n Operating Environment<\/td>\n Marine and Subsea<\/td>\n<\/tr>\n \n Product Family Depth Capability<\/td>\n Up to 6,000 m, Subject to Assembly Qualification<\/td>\n<\/tr>\n \n Electrical Transmission<\/td>\n Not Intended<\/td>\n<\/tr>\n \n Standard Electrical Cable<\/td>\n Not Required<\/td>\n<\/tr>\n \n Customization<\/td>\n Available for Specific Project Requirements<\/td>\n<\/tr>\n \n Warranty<\/td>\n 12 Months<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n DC4M, BH4F, and IL4M: Understanding the Connection<\/h2>\n
BH4F \u2013 4-Pin Female Bulkhead Connector<\/h3>\n
IL4M \u2013 4-Pin Male Inline Connector<\/h3>\n
DC4M \u2013 4-Pin Male Dummy Plug<\/h3>\n
Normal Operating Configuration<\/h3>\n
Protective Configuration<\/h3>\n
Why Use a Dummy Plug on Underwater Equipment?<\/h2>\n
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Typical Applications of DC4M<\/h2>\n
ROV Electrical Systems<\/h3>\n
AUV Instrumentation<\/h3>\n
Underwater Sensor Systems<\/h3>\n
Oceanographic Research Equipment<\/h3>\n
Offshore Monitoring Systems<\/h3>\n
Underwater Cameras and Lighting Equipment<\/h3>\n
Installation and Maintenance Recommendations<\/h2>\n
Inspect the Connector Before Installation<\/h3>\n
Keep Sealing Surfaces Clean<\/h3>\n
Select the Correct Connector Gender<\/h3>\n
Confirm the Connector Series<\/h3>\n
Avoid Excessive Force<\/h3>\n
Verify Pressure Requirements<\/h3>\n
Frequently Asked Questions<\/h2>\n
Q1: What is the DC4M underwater connector?<\/h3>\n
Q2: Which connector is compatible with DC4M?<\/h3>\n
Q3: Can DC4M replace IL4M?<\/h3>\n
Q4: What is the difference between DC4M and DC4F?<\/h3>\n
Q5: Is DC4M compatible with SubConn?<\/h3>\n
Q6: Can DC4M be used underwater?<\/h3>\n
Q7: Does DC4M transmit power or signals?<\/h3>\n
Q8: Does DC4M have an electrical cable?<\/h3>\n
Q9: Is DC4M the same as MCDC4M?<\/h3>\n
Q10: Can DC4M be used during equipment storage?<\/h3>\n
Q11: Is DC4M an electrical shorting plug?<\/h3>\n
Q12: Can customized dummy plugs be supplied?<\/h3>\n
Dependable Protection for Female Subsea Connector Interfaces<\/h2>\n
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