M12 Circular Connectors

What is an M12 Circular Connector?

The M12 connector is a standardized industrial circular connector with a 12 mm locking thread, designed for reliable connections in automation environments. It supports a wide range of pin configurations and coding options, making it suitable for signal, data communication, and limited power transmission.

Due to its balance of size, performance, and availability, M12 has become the most commonly used circular connector in modern industrial systems.

Key Features & Advantages

• Standardized M12 threaded locking (IEC compliant)

• Compact design for space-efficient installations

• Multiple coding options for signal and data separation

• Reliable vibration resistance in industrial environments

• Wide ecosystem of compatible cables and accessories

• Easy integration for OEMs and system integrators

Typical Applications

M12 connectors are commonly used in:

• Sensors and actuators

• Industrial I/O connections

• Factory automation equipment

• Robotics and motion control systems

• AGV and mobile automation platforms

• Industrial Ethernet and fieldbus systems

Best suited for:
Applications requiring reliable signal or data transmission with compact form factor.

M12 Coding Options Overview

M12 connectors are available with different coding types to support various signal and data requirements:

• A-coded – Sensors, actuators, and signal transmission

• B-coded – Fieldbus and control systems

• D-coded – Industrial Ethernet (100 Mbps)

• X-coded – High-speed Industrial Ethernet (10 Gbps)

• L-coded – Power supply for field devices

Choosing the correct coding prevents mis-mating and ensures system reliability.

Technical Overview (Typical)

M12 vs Other Circular Connectors

• More compact than M23

• Higher signal density than C091

• Ideal balance between size, performance, and cost

Why Choose Our M12 Solutions?

• One-stop sourcing for connectors, cables, and accessories

• Support for original and alternative parts

• Fast quotation based on part number, BOM, or application

• Experience serving industrial OEMs and system integrators

RFQ / Call to Action

Request a Quote for M12 Circular Connectors

To receive a fast quotation, please provide:

• M12 coding type (if known)

• Pin count and mounting style

• Cable length or harness requirements

• Application or industry