General Questions

WEIPU Connector is a leading manufacturer and supplier of high-quality waterproof connectors for various industries, including renewable energy, electric mobility, LED lighting, telecommunication, and industrial applications, etc. Our connectors feature a solid and reliable design, ensuring that your connections stay secure and dependable on data, power, or signal connections across various industries. 

WEIPU Connector was established in 1996 and has since become a trusted brand in the connector industry. We have a rich history of innovation and a solid commitment to customer satisfaction. With nearly 30 years of experience, WEIPU provides comprehensive connector products and services, developing connecting solutions adapted to international markets and customers.

At WEIPU Connector, our mission is to provide cutting-edge connector solutions that meet the evolving needs of our customers. A set of core values, including integrity, quality, and customer focus drives us.

Product Questions

WEIPU Connector offers a wide range of connectors, including circular connectors, CEE connectors, heavy-duty connectors, cable glands, customized products, and more. Our products cater to various applications and industries.

Our connectors are designed with meticulous attention to detail and adhere to stringent quality standards. They offer features such as environment resistance, high durability, excellent electrical conductivity, and ease of installation.

While WEIPU connectors are designed to mate with each other within the same product family, compatibility with connectors from other brands cannot be guaranteed. If you are seeking a comparable alternative to our product range, please provide us with your specific requirements, and we will be glad to assist you in finding a suitable solution.

Yes, WEIPU connectors can be used for both Direct Current (DC) and Alternating Current (AC) applications. Our product specifications typically list ratings for AC. If you are planning to use the connector in a DC system, the voltage rating remains unchanged, but the current rating may experience a decrease of approximately 20-30%. It is important to consider this derating factor when selecting connectors for DC applications to ensure safe and reliable operation. For detailed guidance and to ensure compatibility with your specific requirements, please contact our team.

WEIPU Connector holds multiple certifications to ensure the highest quality standards and compliance with industry regulations. Our certifications include ISO 9001, IATF 16949:2016 for quality management systems, EN61984 / EN60309, RoHS compliance for environmental standards, and International Railway Industry Standard (IRIS). Additionally, certain series of our connectors are certified by UL and CSA. These certifications are a testament to our commitment to delivering reliable and compliant products. Our connectors undergo rigorous testing to meet and exceed industry requirements.

  • SF12 series: 4,5,6,7 pins-5A rated (UL listed)
  • SP11 series: 4,5 pins-3A rated (CUL listed)
  • SP13 series: 4,5,6,7 pins-5A rated (CUL listed); 9 pin-3A rated (CUL listed)
  • SP21 series: 2,3,4,5 pins-30A rated (Both UL and CUL listed)
  • SY11 series: 4,5 pins-3A rated (CUL listed)
  • SY13 series: 9 pins-3A rated (CUL listed)

Our connectors reach their specified IP waterproof protection level when a matching plug and socket are correctly mated, or when the connector is adequately covered with a cap designed for it. It’s important to ensure that these conditions are met to maintain the integrity of the IP rating in wet or dusty environments.

Our IP68-rated connectors have undergone extensive testing to ensure their durability and protection against water ingress. In our own lab, we conducted a 1-week test under 10 meters of water to validate the IP68 rating. However, if your application has specific requirements, such as prolonged underwater usage or involves special composition/material, further tests should be arranged to ensure compatibility and suitability for your specific needs. We recommend discussing your requirements with our team to determine the best solution for your underwater application.

The part numbers for WEIPU connectors are carefully designed to reflect detailed specifications. There are the elements usually included:

  • Series Code: This initial part identifies the series to which the connector belongs, each with unique design features suitable for specific applications.
  • Panel Hole Cutout Diameter: Numerical values following the series code specify the diameter of the panel hole cutout, helping to ensure the connector fits perfectly in its intended space.
  • Contact Gender: Indicated by a letter—‘J’ & ‘P ’ for male contacts and ‘K’ & ‘S’ for female contacts—this part of the number helps you identify the type of connection.
  • Number of Contacts: The numbers here represent the total amount of electrical contacts within the connector, affecting the connector’s capability and compatibility with various cable types.
  • Termination Type: This part of the number, often starting with a dash, designates the type of termination, such as solder, screw, or crimp.
  • Cable Outer Diameter Range: This aspect of the part number indicates the suitable cable diameter range the connector can accommodate, ensuring a secure and proper fit.
  • Cap Inclusion: A final letter in the part number denotes cap options:
    • ‘C’: with a cap
    • ‘N’: without a cap
  • Shell Structure and Cable Fix Type: Additional letters provide information about the shell structure and cable fix type, which include details about flange shapes, locking mechanisms, and cable accommodation specifics.


Below is an example of our WY series: 

WEIPU’s SP and SY series stand out due to their reliable performance and versatile applications. Despite their similar outlook, there are distinct differences that make each series unique.

Here is their main specification: 

  Coupling IP Rating Material Size Range Pin Options Power Capacity Color
SP Thread IP68

PC & Nylon66

SP11 to SP29 1-35 pins

Up to 60A; 500V

  • Standard: blue
  • Custom color available
SY Bayonet IP67

PC & Nylon66

SY11 to SY29 1-35 pins

Up to 60A; 500V

  • Standard: blue
  • Custom color available


WEIPU’s SF and SA series connectors share a similarity in their sleek design, often leading to inquiries about their specific differences.

Here is their main specification: 

  Coupling IP Rating Material Size Range Pin Options Power Capacity Color
SF Push-pull IP67

Brass with chrome plating

SF6-20 1-15 pins

Up to 30A; 500V

SA Push-pull IP67

Anodized aluminum

SA6-28 1-35 pins

Up to 60A; 500V

  • Standard: Black, Silver;
  • Special: Blue, Green,  Red


The WS, WF, and WY series are all part of WEIPU’s comprehensive 3W family of connectors, offering a wide range of options for various applications.

The primary differences between the WS, WF, and WY series connectors are their coupling mechanisms and IP ratings:

Coupling Threaded coupling Threaded coupling Bayonet coupling
IP rating Suitable for indoor use Up to IP67 Up to IP67


The “Z” and “ZZ” designations in our 3W series part numbers both refer to the square flange socket connectors. “Z” is used for internal documentation purposes, while “ZZ” is the official designation used publicly. There is no difference between the connectors themselves.

Our WEIPU plug and receptacle are typically marked with the distinctive WEIPU name. If you have any doubts or need further assistance in identifying a WEIPU connector, please reach out to our team, and we will be happy to help.

Product Documentation

Product drawings and specifications can be accessed through our website’s Support Center-Drawing section. Simply navigate to the page and download the relevant documents.

Certification documents and compliance information can be found on our website under the Support Center-Certifications section. They provide details about the regulatory approvals and standards our connectors meet.

Product catalogs and linecards can be downloaded from our website Support Center-Catalog Library section. They provide comprehensive information about our product offerings, features, and specifications.

Operation manuals are available for download on our website. They can be found in the Support Center-Instruction section. They provide detailed technical information, installation instructions, and troubleshooting guidelines for our connectors.

Ordering and Delivery

To place an order, you can contact us directly. We will guide you through the ordering process and provide any necessary assistance.

We accept various payment methods, including bank transfers, credit cards, and PayPal. Our sales team will provide you with the payment details and guide you through the payment process.

We offer a range of shipping and delivery options to ensure your order reaches you in a timely and reliable manner. We have established strong partnerships with reputable shipping carriers such as DHL, FedEx, UPS, and TNT, enabling us to offer competitive contract prices. Additionally, upon request, we can arrange air or sea forwarding services to accommodate your specific shipping needs. Our most common Incoterms are EXW (Ex Works) or C&F (Cost and Freight). If you require different Incoterms or have any other shipping related inquiries, please reach out to our sales team for further assistance.

We prioritize the quality and reliability of our products, and as such, we guarantee a minimum of 500 mating cycles for our connectors. In the event of any technical issues or problems encountered during usage, please promptly contact our team for further investigation and support. We are committed to assisting you until the problem is resolved satisfactorily. If the quality problem is determined to be caused by our own products, we will provide a replacement at our own expense. Please note that non-quality related returns are not accepted.

The estimated lead time for an order may vary depending on several factors including product availability, order volume, and any customization requirements. Typically, for sample orders, the lead time is approximately 1-2 weeks. For bulk orders, the lead time will depend on the quantity requested and is typically around 4-6 weeks.

For a more accurate estimate, we recommend reaching out to our sales team with your specific order details.

We do not have a minimum order quantity (MOQ) policy for our standard products. If you have any further questions or inquiries, please feel free to contact us.

Absolutely, we encourage customers to order samples of our connectors to ensure they meet your specific requirements. We do not have a minimum order quantity (MOQ) for our standard products, allowing you to test our products without the commitment to a large order. We highly recommend evaluating samples before proceeding with a bulk purchase to ensure optimal compatibility and satisfaction.

WEIPU’s distributor network is extensive, reaching across various continents and regions. Our distributors are located in Europe, North America, South America, Asia, and Africa, covering a wide array of countries to ensure that our high-quality connectors are available globally, catering to the needs of diverse industries and applications. If you have any further questions or inquiries, please feel free to contact us.

Custom Solutions

We offer customized connector solutions designed to meet the unique requirements of our customers. Our dedicated team specializes in creating tailored solutions to ensure optimal performance and compatibility with your specific application. For detailed information and to explore our custom solution capabilities, please visit our Custom Solution page. Feel free to reach out to us with any specific inquiries or project requirements you may have.

To request a custom connector solution, you can reach out to our sales team and provide detailed information about your requirements. Our engineering team will review the specifications and collaborate with you to develop the optimal solution.

Lead times for custom orders depend on factors such as complexity, customization level, and order volume. Our sales team will provide you with a specific lead time and pricing information based on your custom order details.

We primarily produce our own brand products; however, we understand that some projects may require specific connectors based on customer designs. If you have a potential project with a significant demand and are willing to cover the associated tooling fee, we encourage you to reach out to us directly. Our team will evaluate your requirements and discuss the feasibility of producing a custom connector solution to meet your needs. Please contact us to discuss your project in detail and explore the possibilities.

Our cable assembly service is available for a minimum order quantity (MOQ) which can be provided upon inquiry. Please note that the cable assembly service is offered in combination with our connectors, and we do not sell cables individually. If you are interested in our cable assembly service, which includes our connectors, please contact our team for further details and to discuss your specific requirements. We will be glad to assist you with the cable assembly service as per your needs.

When using WEIPU connectors, you have the option to customize them with PCB tail for seamless integration into your PCB design. Additionally, if you require a shielding function for connectors, we can customize existing connectors to meet your shielding requirements. Our experienced and professional R&D team is ready to collaborate with you to co-design and customize connectors based on your specific needs. For more information and assistance regarding PCB tail and shielding customization, please reach out to our team. We are here to help you achieve the optimal connector solution for your application.

Technical Support

For technical support, you contact us directly. We will assist you with any technical inquiries or issues you may have.

Our team can provide guidance and assistance in selecting the right connectors for your specific applications. They can help you understand the technical specifications and features of our products to make informed decisions.

If you have any technical inquiries or issues with our products, our technical support team is available to provide prompt assistance. They will troubleshoot the problem and provide you with the necessary support to resolve it.

Partnership and Collaboration

We value partnerships and collaborations with distributors and partners. For detailed information about our partnership opportunities, we invite you to visit our Partner Plan page. There you will find comprehensive information regarding our partnership programs, benefits, and requirements. We are excited to provide you with the necessary information and engage in discussions about potential collaborations. Feel free to reach out to us to explore the possibilities of partnering with us.

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