M Series connectors are circular connectors widely used in industrial automation, sensors, communications, and other demanding applications. Renhotec offers a wide range of M5, M8, M12, M16, M23 and M40 connectors in various codings and configurations.

Available with or without cables, our M connectors support customized cable lengths and PVC or PUR jacket materials to meet your specific application requirements.

Explore M Series Request a Quote

M Series Connector Product Series

m5 series connector

M5 Series Connectors

Compact sensor connectivity for miniature industrial automation systems

  • M5 × 0.5 Thread
  • A Code
  • 3-4 Pin

Applications:

Mini Sensors | Automation Equipment | Measurement Devices

M8 Series Connectors

Compact sensor and actuator connectivity for industrial automation applications

  • M8 × 1 Thread
  • A/B Code
  • 3–8 Pin

Applications:

Sensors | Actuators | Factory Automation

M9 Series Connectors

Small circular connectors for reliable signal transmission in industrial equipment

  • M9 × 0.5 Thread
  • A Code
  • 2-8 Pin

Applications:

Sensors | Control Systems | Automation Equipment

M12 Series Connectors

Industrial automation, Ethernet and power connectivity solutions

  • A/B/D/X/K/L/S/T/M Code
  • 3–17 Pin
  • IP65/IP67

Applications:

Sensors | Robotics | Industrial Ethernet

M16 Series Connectors

Reliable signal and power connections for industrial equipment and control systems

  • A Code
  • 2–24 Pin
  • IP67

Applications:

Control Systems | Machinery | Instrumentation

M18 Series Connectors

A focused plastic-shell range for sensing and control wiring.

  • A Code
  • 2–17 pin

Applications:

Sensing systems | Industrial controls | Automation equipment

M23 Series Connectors

Heavy-duty connectivity for servo motors, drives and industrial automation systems

  • M23 × 1.0 Tread
  • 6–19 pin
  • Signal / Power

Applications:

Servo Motors | Robotics | Motion Control

M40 Series Connectors

Large-size circular connectors for demanding industrial power and signal applications

  • A Code
  • 3-17 Pin
  • Large Cable Diameter Support

Applications:

Machinery | Industrial Equipment | Harsh Environments

A Coded

  • Typical application: Sensors, Actuators, and Control systems
  • Rated current 4-6A
  • Rated voltage 250V AC/DC
  • Number of contacts 2 – 12

The A-coding provides a secure and reliable connection for power and signal transmission in harsh and demanding environments.

B Coded

  • Typical application: Data and Signal transmission
  • Rated current 4-16A
  • Rated voltage 30-250V AC/DC
  • Number of contacts 3 – 19

B coded is a type of circular connector used in a range of industrial and automation applications where there is a need for signal, data and power transmission.

D Coded

  • Typical application: Sensor technology, Measurement and control technology
  • Rated current 4-12A
  • Rated voltage 60-250V AC/DC
  • Number of contacts 3 – 19

D coded is ideal for applications where there is a need for high-performance data transmission and reliable power supply in harsh environmental conditions.

S Coded

  • Typical application: Sensors, Actuators, and Control systems
  • Rated current 4-6A
  • Rated voltage 250V AC/DC
  • Number of contacts 2 – 12

The A-coding provides a secure and reliable connection for power and signal transmission in harsh and demanding environments.

T Coded

  • Typical application: Sensors, Actuators, and Control systems
  • Rated current 16A
  • Rated voltage 500V
  • Number of contacts 2 – 12

Circular connectors with T-coding are a type of industrial connector that is designed for use in harsh environments. These connectors have circular configurations with screw locking mechanisms, making them ideal for applications that require reliable and secure connections.

L Coded

  • Typical application: Data communication systems with Ethernet or other high-speed protocols
  • Rated current 1.5-8A
  • Rated voltage 50-600V
  • Number of contacts 4 – 16

L-coded circular connectors are available in different sizes and number of pins, with some models supporting high-speed data transfer rates of up to 10Gbps. They are also designed to be waterproof and dustproof, with rugged casing that can withstand harsh environmental conditions.

X Coded

  • Typical application: Modern communication and Automation systems.
  • Rated current 8-16A
  • Rated voltage 50-600V

X-coded circular connectors provide an ideal solution for high-speed and robust data transfer applications, especially those requiring waterproofing and resistance to harsh environments. They are widely used in automation, communication, and control systems where high-speed data transfer and robustness are critical.

Catalog & Technical Resources

Catalog

Datasheet

Video

M8 Series: Precision Connectors & Cable Assemblies for Industrial Excellence

M12 Connectors: The Ultimate Guide to Signal, Data & Power for Industrial Automation

M12 Connectors for Robotic Arms | Stable Signal Transmission in Industrial Automation

M8 & M12 Sensor Distribution Boxes: IP67 Waterproof Junction Box for Industrial Automation

Certificate

Solder Termination

To solder a wire to M connectors, strip the insulation from the end of the wire, insert it into the solder cup of the connector, bend the wire, apply heat using a soldering iron, and remove excess solder if necessary. It’s important to use the correct temperature and avoid melting the insulation. Solder termination creates a secure and reliable connection that can operate in harsh environments.

PCB termination

To install an M connector onto a PCB, mark the mounting hole locations onto the PCB and drill the holes. Insert the connector and solder the pins onto the PCB, ensuring a reliable electrical connection. Inspect the soldered connections and test the connector before use.

Screw Termination

To make a screw joint with an M12 connector, strip the wires and insert them into the terminal block, tightening the screws securely without damaging the wires. Inspect the connection, and then thread the connector with the wires into the matching receptacle or threaded hole, turning it clockwise until the threads engage. Tighten the connector an additional quarter turn until it is firm, then test it to ensure a good electrical connection.