circular connector
Various circular connector 
(M5 M8 M9 M12 M16 M23)
Power connector, signal connector, data connector, with waterproof, oil resistant, cold resistant, stable performance, efficient and fast connection
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M5 circular waterproof connector/M5 cable

M5 circular waterproof connector is widely used to connect sensors, brakes, actuators and automatic control systems. M5 sensor and brake are devided into M5 injection molding straight insert male and female connector, M5 PCB board end front mount female connector, M5 board welding straight thread male head, PCB board type M5 male head, M5 board end front mount/rear mount female head. With 90 degree PCB , PCB through hole connector, small micro waterproof connector, PCB panel mount front fastened, Dip soldering panel mout PCB male connector.

Features:

-- M5 connectors pin configurations: 2 pin, 3 pin, 4 pin

-- Connector body type: Female/male

-- Non-removable Contacts

-- Meets IP67/IP68 water proof requirements

-- -40°C to +120°C Temperature Range

Material and specifications:

-- SHELL: Copper alloy, Zinc alloy or Stainless Steel
-- INSULATOR: PA66, UL 94V-0 (Other materials available)
-- CONTACTS: Brass, Gold Plated
-- NUT: Brass-Nickel Plated

M8 circular waterproof connector/M8 cable

M8 circular connectors and its cables are with advtanges of waterproof, oil resistant, cold resistant, stable performance, efficient and fast connection, so they are widely used in photoelectric switch, proximity switch, industrial automation robot sensor and various industrial 4.0 integrated wiring harness wiring systems.M8 connector, also known as sensor connector, is divided into cable and no cable, outlet 4-6 and 6-10 optional, cable length with cable 1 meter, 2 meters, 5 meters and 10 meters can be customized.

Features:

-- M8 connector pin configurations: 3 pin, 4 pin, 5 pin, 6 pin

-- Non-removable Contacts

-- Meets IP67/IP68 water proof requirements

-- -40°C to +120°C Temperature Range

Material and specifications:

-- SHELL: Copper alloy, Zinc alloy or Stainless Steel
-- INSULATOR: PA66, UL 94V-0 (Other materials available)
-- CONTACTS: Brass, Gold Plated
-- NUT: Brass-Nickel Plated

Circular Push-pull connector

M8 circular connectors and its cables are with advtanges of waterproof, oil resistant, cold resistant, stable performance, efficient and fast connection, so they are widely used in photoelectric switch, proximity switch, industrial automation robot sensor and various industrial 4.0 integrated wiring harness wiring systems.M8 connector, also known as sensor connector, is divided into cable and no cable, outlet 4-6 and 6-10 optional, cable length with cable 1 meter, 2 meters, 5 meters and 10 meters can be customized.

Features:

-- M8 connector pin configurations: 3 pin, 4 pin, 5 pin, 6 pin

-- Non-removable Contacts

-- Meets IP67/IP68 water proof requirements

-- -40°C to +120°C Temperature Range

Material and specifications:

-- SHELL: Copper alloy, Zinc alloy or Stainless Steel
-- INSULATOR: PA66, UL 94V-0 (Other materials available)
-- CONTACTS: Brass, Gold Plated
-- NUT: Brass-Nickel Plated

M12 circular waterproof connector

M12 connectors, combined with power and data lines, are designed to reduce occupancy and installation and cost for process automation and industrial applications, automation equipment, electronic equipment, electronic instrumentation, sensors, commercial transportation, and military/aviation applications.

Using 4/5/8 contacts, all of them can carry the current of up to 4A per contact.Injection molding technology is used to ensure perfect IP67 seal rating and provide reliable stress relief capability.

Features:

-- M12 connector pin configurations: 2-5 pin, 6-8 pin, 9-12 pin, 13-17 pin

-- Non-removable Contacts

-- Meets IP67/IP68 water proof requirements

-- -40°C to +120°C Temperature Range

Material and specifications:

-- SHELL: Copper alloy, Zinc alloy or Stainless Steel
-- INSULATOR: PA66, UL 94V-0 (Other materials available)
-- CONTACTS: Brass, Gold Plated
-- NUT: Brass-Nickel Plated

Industrial applications
 
Industrial applications
 
Commercial transportation
 
Commercial transportation
 
Military/aviation applications
 
Military/aviation applications
 
Connect sensors
 
Connect sensors
 
Industrial automation robot
 
Industrial automation robot
 
Medical device
 
Medical device
 

What are the benefits of circular connectors?

From industrial electronics and energy technology to medical and military technology, circular connectors are used in many different markets and applications. Here are five main trends for the future:

 

 

Miniaturization

While miniaturization is not a new development, it continues to trend nonetheless. This goes for both the size of the circular connector systems and the electronics, where more is being installed in less and less space. The inner workings of circular connectors are becoming increasingly important. What are the smallest possible sizes that are feasible in practice? And how many contacts can be integrated? By asking questions like these, connector manufacturers are pushing the limits of technology further and further.

High Data Rates

These days, there is a growing need to transmit more information, faster. High-speed data transfers are critical in a variety of fields and are no longer limited to offices, server rooms, and dry/clean environments. Considerations in choosing the appropriate circular connector should include quality, throughput, and quantity of data that can/will be transmitted without loss or interference. Manufacturers are combining small sizes, more flexibility, high numbers of mating cycles, and maximum transmission reliability to create flawless solutions. This allows conventional communication protocols to transmit data at transfer rates from 10Mb/s to 10Gb/s or USB 3.0 up to 5Gb/s.

Hybrid Solutions

The need to fulfill a variety of functions with a single component is on the rise. The obvious advantages include increased networking capabilities, new technological possibilities, and resource efficiency. Connector manufacturers now offer tailor-made hybrid connectors that provide the customer with efficient, ergonomic solutions in a single connector system. They combine the transmission of power, signals, data, or other media in one interface.

With a hybrid connector, the customer can handle all these tasks in a smaller footprint. Simplified handling is another benefit of hybrid circular connectors, as is preventing faults and saving time. In medical technology, for instance, hybrid interfaces offer certainty in application: A single mating action establishes a perfect connection in which it is impossible to forget a plug or connect it incorrectly, which can save lives in emergencies.

Modular Solutions

Circular connectors are modular solutions, too. The customer has a choice when it comes to size, number of contacts, inserts, fittings, and many other parameters. Technology portfolios offer a large selection, and not just for the housing: There are countless possibilities for the inner workings of the circular connectors. A modular system provides a connector that achieves a perfectly secure connection and is ideally suited to the specific application at hand. The manufacturer creates the right premium product for a customer’s specific requirements with expertise in implementation.

Application- and Customer-Specific Solutions

Circular connectors must function smoothly and flawlessly, even under extreme conditions such as pressure tightness up to 500 bar, or in critical applications, such as medical, where they must meet the EN 60601-1-3 standard as well as other strict requirements. That’s why customers rely on complete solutions for circular connectors from a single source. The individual customer-specific connector is created based on the customer’s requests and requirements, and may include a cable assembly as well. From an EMC-compliant solution to soldering and crimping technology, the manufacturer ensures that the circular connector can be seamlessly integrated into the application.


  • Quality Assurance

    Based on the management policy of producing value through good quality,HRB puts the improvement of customer satisfaction first. All of products produced by HRB will be inspected carefully, same time, compliance with industry standards, environmental protection requirements.

  • Reasonable Price

    Our quoted price of each product may not the lowest, but it's the fair and resonable, which can be matching with our products quality. Welcome to inquire.

  • Delivered on Time

    Meeting customer’s expectations and delivery requirements has to be a priority for every business. We HRB try to meet every customer’s satisfaction, deliver every items on time, to achieve the optimization reasonable distribution.

  • Perfect After Sales

    When you choose our products, our sales staff will do regular product tracking service according to the time of your purchase, and deal with and maintain the problems in time once they are found.

  • Customized Service

    If these standard products are not what you want, let us know your idea and thoughts, we can help to you make it come true.

FAQ-Circular Connector

  • Q Are there any HRB connectors independently developed by HRB?

    A
    Yes, HRB has developed a comprehensive range of proprietary connectors. Our Waterproof 2.0 Easy-Plug series, Waterproof 2.0 S-Type series, along with the 3.0, 4.0, 6.35 and 11.0 series, are all independently designed and developed by HRB.
    All product lines are fully mature and in stable mass production. These durable and reliable connectors feature IP67, IP68 and IP69K protection ratings, delivering robust solutions for automotive, industrial and outdoor applications.
  • Q Is HRB Connector a reliable manufacturer in China?

    A
    Yes, HRB is a reliable and professional connector manufacturer in China.
    With decades of production experience, it holds IATF 16949, ISO 9001, UL, RoHS and REACH certifications. Strict quality control, advanced production facilities and mature testing processes ensure stable performance.
    HRB provides high-quality standard and custom connectors for automotive, industrial, consumer electronics and global markets.
  • Q How can I get a quotation from HRB connector?

    A
    You can easily get a quotation for HRB connectors by providing key information.
    Submit your requirements including product model, pitch, quantity, application, and technical specifications. For custom designs, send drawings or samples.
    Our team will review your request and provide a professional and timely quotation for standard and custom connectors.
  • Q What is the MOQ for HRB connectors?

    A
    HRB’s MOQ varies by product type and customization level, with flexible support for small-batch and prototype needs.
    Standard off-the-shelf connectors (housings/terminals):
    MOQ: 1,000–10,000 pcs
    Small orders: 100–500 pcs available for sample/testing
    IDC/RAST 2.5/5.0 standard series: MOQ: 5,000–30,000 pcs
    Custom/modified connectors:
    MOQ: 5,000–10,000 pcs (negotiable for tooling-shared projects)
    Wire harness/assembly:
    MOQ: 100–500 pcs (flexible for prototype batches)
    HRB supports low-volume trial orders for R&D and small-scale production, with MOQ negotiable based on project requirements.
  • Q What is the lead time for custom connector solutions?

    A
    HRB’s custom connector lead time is 7–10 days for prototypes and 15–25 days for mass production, depending on complexity and tooling needs.
    Prototype (samples): 7–10 days (design review + mold trial + testing)
    Mass production: 15–25 days (tooling + full production + quality inspection)
    Simple modifications (pin count/pitch/color): 10–15 days (faster, using existing tooling)
    Complex new designs (new mold/structure): 20–25 days (full tooling + validation)
    HRB’s in-house R&D and tooling enable fast iteration; standard bulk orders (non-custom) ship in 10–15 days.
  • Q Can HRB customize connectors based on drawings or samples?

    A
    Yes, HRB provides comprehensive custom connector solutions.
    We can develop customized products according to customer drawings, technical specifications and physical samples. With professional design and manufacturing capabilities, we offer tailor-made designs for unique structural, electrical and environmental requirements to meet diverse application needs.

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