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SP Series Circular Connector

MOQMOQ >200
>Number Of CoresNumber Of Cores 2-26Pin
Contact DiameterContact Diameter(mm) 1.0/1.5/2.5/3.5mm
IP RatingIP Rating IP68
Shell MaterialShell Material PC/PA66
Temperature RangeTemperature Range -40℃ ~ +85℃
TerminationTermination Solder/Screw Crimping
Rated CurrentRated Current(A) 3A/5A/10A15A/30A
Rated VoltageRated Voltage(Ac.V) 125V/180V/250V/400V/500V
Test VoltageTest Voltage(Ac.V)1Min 1000V/1200V/1500V
Insulation ResistanceInsulation Resistance (MΩ) 2000MΩ
Contact ResistanceContact Resistance (MΩ) ≤5MΩ
CertificationCertification CE,ISO9001, RoHS
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SP Series Waterproof Connectors – Reliable Sealing Solutions for Industrial Connectivity
The SP series waterproof connectors are designed to provide dependable electrical connections in environments where protection against water, dust, and mechanical stress is essential. Built with durable materials and precision sealing structures, these connectors ensure stable performance in both indoor and outdoor applications.

The SP series covers a wide range of connector sizes and current capacities, offering flexible solutions for signal transmission, power distribution, and equipment integration across various industries.

SP Connector

SP Series Connectors Are Engineered for Harsh Environmental Conditions
SP series connectors are developed to perform reliably in challenging environments where moisture, vibration, and temperature variations are common. With waterproof sealing technology and secure locking mechanisms, they help maintain consistent electrical contact and reduce the risk of system failure.

These connectors are widely selected for equipment requiring long-term reliability and minimal maintenance.

Electrical Connector


Complete Series Coverage
The SP series includes multiple models to support different installation requirements and electrical loads. Each size is optimized for specific application scenarios.
Typical models include:
SP13 - Compact connector for small equipment and limited installation space
SP17 - Standard industrial connector for general-purpose applications
SP21 - Medium-duty connector for higher current transmission
SP29 - Heavy-duty connector for high-power systems

This structured product range allows engineers and system designers to select the most suitable connector based on performance and installation requirements.

4Pin Connector

Key Features of the SP Series
IP67 / IP68 waterproof and dustproof protection
Secure threaded locking mechanism
Durable housing for industrial environments
Stable electrical conductivity
Resistance to vibration and mechanical stress
Long operational service life

Suitable for both signal and power transmission


Flexible Installation & Configuration Options
SP series connectors are available in a variety of connection styles and mounting structures to support different equipment designs.
Available options include:
Cable-to-cable connectors
Panel mount connectors
Flange mount connectors
Docking plug and socket connectors
Straight and right-angle versions
Multi-pin configurations
Custom cable assembly solutions

Customization services are available for wiring, connector configuration, and special project requirements.


Typical Application Industries for SP Series Waterproof Connectors
SP series waterproof connectors are widely used across industrial and commercial sectors requiring reliable environmental protection and electrical stability, including:
Industrial automation systems
Outdoor LED lighting equipment
Electrical control cabinets
Renewable energy systems
Transportation and infrastructure equipment
Security and monitoring devices

Marine and field equipment


Integrated Manufacturing & Supply Capability
With manufacturing experience since 2007, our company focuses on the development and production of waterproof connectors and cable assemblies. Our production facilities integrate die casting, mold manufacturing, machining, injection molding, and assembly processes to ensure consistent product quality and efficient production control.
This integrated production structure allows us to respond quickly to customer requirements while maintaining stable output capacity for both standard and customized orders.

Connector Factory

Quality Assurance & Certification Compliance
To ensure reliable performance, all SP series connectors undergo strict testing and inspection procedures during production.
Testing capabilities include:
Waterproof sealing performance testing
Mechanical insertion and withdrawal testing
Salt spray corrosion resistance testing
Electrical insulation and voltage resistance testing
Air tightness verification

Precision dimensional inspection

Waterproof Connector

Our products comply with internationally recognized standards, including: UL, CE, RoHS, BSCI, ISO9001, ect.
These certifications demonstrate our commitment to quality, safety, and continuous improvement.

Connector

Stable Production & Global Delivery Support

All connectors are carefully inspected and securely packaged before shipment to ensure product safety during transportation. With stable manufacturing capacity and organized logistics coordination, we support reliable delivery schedules for customers worldwide.

Circular Connector

We are committed to providing dependable connectivity solutions and long-term supply support for industrial applications.

 Item

 Parameters

 Number of Cores

 2-26Pin

 Gender

 Male/Female

 Housing Material

 PC/PA66

 Cores Material

 Brass Plated with Gold

 Insulator Material

 PPS

 Locking System

 Screw Locking

 Temperature Range

 -40℃, +85℃

 Rated Current (A)

 3A/5A/10A15A/30A

 Rated Voltage (AC.V)

 125V/180V/250V/400V/500V

 Test Voltage (AV.C)1Min

 1000V/1200V/1500V

 Insulation Resistance ()

 2000

 Insulation Resistance ()

 ≤5

 Termination

 Solder/Screw Crimping


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Related After-sales Questions KMYD Connectors is committed to providing solutions for SP Series Circular Connector product manufacturing.

Customer Reviews

   

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   Ends pump wire short circuits, heavy-duty quality!


CozyHomeShopper  2026-02-02

Finally fixed my submersible pump’s short circuit issue. SP17 is thick and durable, waterproof even underwater. Easy to connect, no power issues—worth every cent!
   No more water damage for my CCTV cameras!


GourmetGoddess  2026-02-02

My old camera connectors kept failing from rain, SP13 is a game-changer. IP68 waterproof holds up, locking design never comes loose. Sturdy build, totally reliable for outdoor use.
   Best waterproof connector for my solar setup


TechieTrendz  2026-02-02

SP21 connectors handle the power from my solar panels with zero problems. The weatherproof design has survived weeks of storms, and the quick-connect feature saved me a ton of time. Top quality, will buy again!
   Rock-solid for my marine equipment


CreativeCrafter  2026-02-02

Needed something that could survive saltwater and rough conditions for my boat’s electronics. The SP29 connectors are built like tanks, and the waterproof cap keeps everything dry. Worth every penny for marine applications.
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KMYD Connectors

Tel: +8619924482730

Email: info@kmydconnector.com

MP/WhatsApp: +86-19924482730

Manufacturer Address:Baoan District, Shenzhen City, Guangdong Province,China

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