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SD20/SP20 Waterproof Square Flange Connector 4 Pins

MOQMOQ >200
PricePrice $2.53 - $4.02
>Number Of CoresNumber Of Cores 2 - 9 Pins
Contact DiameterContact Diameter(mm) 1.0mm/1.8mm/2.8mm/3.6mm
IP RatingIP Rating IP68
Shell MaterialShell Material PC,Nylon66
Temperature RangeTemperature Range -25℃ ~ +85℃
TerminationTermination Welding
Rated CurrentRated Current(A) 5A/10A/25A/50A
Rated VoltageRated Voltage(Ac.V) 250V/380V
Test VoltageTest Voltage(Ac.V)1Min 1500V
Insulation ResistanceInsulation Resistance (MΩ) 2000MΩ
Contact ResistanceContact Resistance (MΩ) ≤5MΩ
CertificationCertification CE, RoHS,BASCI,ISO9001
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+8619924482730

SD20 / SP20 Waterproof Cable Connector - 4 Pins Reliable Power & Signal Connection

The SD20 / SP20 4 Pins Waterproof Cable Connector is designed for equipment that requires a simple, stable, and durable cable connection solution in industrial and outdoor environments. With its balanced 4-pin configuration, this connector is ideal for applications combining basic power supply and signal transmission within a compact interface.

Connector

Its cable-type structure allows direct integration with wiring systems, helping equipment manufacturers simplify installation while maintaining reliable long-term electrical performance.

Focused on Practical Industrial Connectivity
Many industrial systems do not require overly complex interfaces, but they do require dependable operation under continuous use. The SD20/SP20 4-pin connector is developed for these practical applications, providing:
Stable electrical connection
Flexible cable integration
Reliable waterproof protection

Efficient installation and maintenance

Circular Connector

The circular structure also helps improve cable organization and reduces installation limitations in compact equipment layouts.

Functional Advantages
4 Pins for Balanced Transmission
Suitable for applications requiring both power and basic control signal transmission without unnecessary complexity.
Waterproof Sealing Structure
Helps protect internal contacts against moisture, dust, and outdoor environmental conditions, supporting stable operation over time.
Cable Connector Design
Direct cable connection improves installation flexibility and reduces additional interface requirements inside equipment.
Stable Mechanical Structure
Designed to maintain secure connection performance under vibration and long-term industrial operation.
Wide Equipment Compatibility
Suitable for automation equipment, outdoor systems, control devices, and industrial electronics.
SD20 Connector
Reliable Products Start with Strong Manufacturing

We are a professional connector manufacturer with more than 15 years of experience in waterproof connector and cable assembly production.

Connector

Our factory integrates the complete production process, including:
Mold and tooling development
Zinc alloy die-casting
CNC precision machining
Injection molding

Cable assembly and connector integration

Connector

By controlling production internally, we ensure stable quality, efficient lead times, and reliable large-scale supply capability.

Strict Quality Assurance Procedures
Every connector undergoes comprehensive inspection before shipment, including:
Electrical conductivity testing
Waterproof sealing verification
Plugging and durability testing
Cable continuity inspection

Dimensional and assembly accuracy checks

Connector

Our products are produced under ISO9001 quality management standards and comply with international certifications such as CE and RoHS.
Connector
Customization Services Available
We support flexible OEM and ODM solutions, including:
Cable length customization
Wire specification and shielding options
Pin configuration adjustments
Connector material and structure optimization
Our engineering team can support projects from prototype development to mass production.

Typical Applications
Industrial automation systems
Outdoor electrical equipment
Smart control devices
Power distribution systems
Monitoring and communication equipment
LED and lighting applications

Designed for Stable Everyday Operation
The SD20/SP20 4-pin waterproof cable connector is built for customers who need a reliable and efficient industrial connection solution with practical installation flexibility and dependable long-term performance.

Contact Us
We provide samples, technical support, and customized production services according to your project requirements.
Contact us today for more details and competitive quotations.

 Item

 Parameters

 Number of Cores

 2-9 Pin

 Gender

 Male/Female

 Housing Material

 PC,Nylon66

 Cores Material

 Brass Plated with Gold

 Insulator Material

 PPS

 Locking System

 Threaded Connection

 Temperature Range

 -25℃, +85℃

 Rated Current (A)

 5A/10A/25A/50A

 Rated Voltage (AC.V)

 250V/380V

 Test Voltage (AV.C)1Min

 1500V

 Insulation Resistance (㏁)

 2000㏁

 Contact Resistance (㏁)

 ≤5㏁

 Termination

 Welding


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RELATED FAQ

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SD20/SP20 Square Flange Connector
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Customer Reviews

   

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   Way better than cheap connectors


SeasonalShopper  2026-02-02

Swapped out old plastic plugs for SD16 on my outdoor CCTV. Powers + sends data flawlessly, even in fog. Installation took 2 mins max—love it!
   SD16 = Game Changer


AdventureShopper  2026-02-02

Ran power + 8 signal lines for my outdoor sensor setup with the 10-core SD16. Clean, tidy, and 100% waterproof. No more messy wiring!
   Great for CCTV setups


ShopAndSmile  2026-02-02

These SD16 connectors are perfect for my outdoor cameras. The waterproof seal keeps rain out, and the 8-core version handles power + video easily. Super quick to install!
   2 months in, still perfect


AmazonFindsFan  2026-02-02

SD16 connectors on my patio string lights—through sun, rain, wind, no glitches. The metal thread is durable, no stripped parts. Great quality!
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