A Complete List of M12 Circular Connectors with A Coding for Sensors and Actuators
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- Dec 25,2025
Summary
This page provides a complete list of M12 circular connector A code models, focusing on applications for sensors and actuators in industrial automation. It is designed as a practical reference for engineers, buyers, and system integrators looking for reliable, standardized M12 A-coded connectivity solutions.
A Complete List of M12 Circular Connectors with A Coding for Sensors and Actuators
Introduction
This page provides a complete list of M12 circular connector A code models, focusing on applications for sensors and actuators in industrial automation. It is designed as a practical reference for engineers, buyers, and system integrators looking for reliable, standardized M12 A-coded connectivity solutions.
What Are M12 A-Coded Circular Connectors?
M12 connectors are circular connectors with a 12 mm locking thread, standardized under IEC 61076-2-101. The A-coding keyway is the most widely used configuration and is primarily intended for sensor, actuator, and low-voltage power connections.
Prevents mismating through standardized A-coding geometry
Supports signal and DC power transmission
Common IP ratings: IP67, IP68, IP69K
Available from 2-pin up to 17-pin configurations
M12 Circular Connectors
Rugged, compact and versatile — ideal when you need mixed power & signal plus environmental protection.
Why A-Coding Is Ideal for Sensors and Actuators
A-coded M12 connectors are the default choice for industrial sensors and actuators because they balance electrical performance, mechanical robustness, and wide compatibility. They are commonly used for:
Proximity and photoelectric sensors
Valve and solenoid actuators
IO-Link Class A device connections
DC power and mixed signal transmission
Complete List of M12 Circular Connector A Code Models
3-Pin A-Coded Connectors
Typically used for basic sensor power and signal transmission.
4-Pin A-Coded Connectors
The most common configuration for sensors and actuators, supporting power and signal in compact designs.
5-Pin A-Coded Connectors
Suitable for multi-signal sensors or advanced IO applications.
6-Pin, 8-Pin, 12-Pin & 17-Pin Models
Designed for higher signal density, complex actuator control, or combined power and signal interfaces.
Arrangement of M12 A - coded circular connector cable assemblies
For M12 A - coded circular connector cable assemblies, the pin arrangement is regular and orderly. They ensure stable and efficient signal transmission, are suitable for industrial automation wiring scenarios, resist interference, are easy to install, and have outstanding durability.
Types of M12 A-Coded Connector Designs
Cable Assemblies
Factory-terminated plug-to-socket or plug-to-plug cordsets for fast installation and reliable performance.
Field-Attachable Connectors
Allow custom cable lengths and on-site wiring, ideal for flexible system design.
Panel Mount & Bulkhead Connectors
Used for secure equipment interfaces and control cabinet connections.
PCB Mount Connectors
Integrated directly onto circuit boards for compact automation devices.
How to Select the Right M12 A-Coded Model
Pin count: Match the sensor or actuator signal requirements
Voltage & current rating: Ensure safe power handling
Environmental protection: Choose appropriate IP rating
Termination style: Cable, field-wireable, panel, or PCB
Mechanical design: Straight or angled orientation
Connoder – Your Trusted Source for M12 A-Coded Connectors
Connoder specializes in industrial connectors and automation connectivity solutions. With strong engineering expertise and strict quality control, Connoder provides a comprehensive portfolio of M12 A-coded circular connector models for sensors and actuators.
Wide range from 2-pin to 17-pin configurations
Cable, panel mount, PCB, and field-attachable options
Compliance with international standards and RoHS requirements
OEM / ODM customization for industrial automation projects
Pin options of M12 A - coded connectors
M12 A - coded connectors come with various multi - pin specifications, feature a strong metallic texture, are suitable for industrial automation scenarios. They offer stable plug - and - socket performance, are resistant to interference, and precisely meet the signal transmission requirements of equipment.
Typical Applications
M12 A-coded connectors from Connoder are widely used in:
Industrial automation and manufacturing lines
Sensor and actuator networks
Control cabinets and field IO systems
Machinery, robotics, and smart factory equipment
Conclusion
This guide serves as a reliable reference for anyone searching for a complete list of M12 circular connector A code models. By combining industry standards, practical selection guidance, and Connoder’s proven product expertise, it helps ensure confident connector selection for sensor and actuator applications.
What is an M12 A-coded circular connector used for?
An M12 A-coded circular connector is primarily used for connecting sensors, actuators, and low-voltage DC power devices in industrial automation. It is designed to transmit signals and power reliably while preventing mismating through its standardized A-coding keyway.
Why are A-coded M12 connectors commonly used for sensors and actuators?
A-coded M12 connectors are widely used for sensors and actuators because they offer a balanced combination of versatility, durability, and standardization. They support multiple pin counts, provide high IP protection for harsh environments, and are compatible with most industrial IO systems.
How many pin configurations are available for M12 A-coded connectors?
M12 A-coded connectors are available in a wide range of pin configurations, typically from 2-pin up to 17-pin, allowing them to support simple sensor connections as well as more complex actuator and mixed signal applications.
What types of M12 A-coded connector designs are available?
M12 A-coded connectors are available as pre-assembled cable cordsets, field-attachable connectors, panel mount or bulkhead connectors, and PCB mount connectors. This variety allows flexible installation in both field wiring and equipment design.
M16 6 Pin Circular Connector A-Code Interface, Waterproof Connector Receptacle Cable, Straight, Front-Locking, Unshielded
M16 6 Pin Circular Connector assemblies are ideal for demanding industrial applications such as industrial automation and aerospace, marine, and telecom systems.
M16 6 Pin Circular Connector are ideal for demanding industrial applications such as industrial automation and aerospace, marine, and telecom systems. M16 Circular Connector are available in quick-lock wiring assembly types with IP67 protection and a vibration-resistant screw design.
M16 6 Pin Circular Connector are ideal for demanding industrial applications such as industrial automation and aerospace, marine, and telecom systems. M16 Sensor connector are available in quick-lock wiring assembly types with IP67 protection and a vibration-resistant screw design.