Waterproof IP66 to 68 M12 A code 4 Pins Male Panel Mounting Connector A12D-M104HSR

M12 4 Pin Male Panel Mount Connector (Bulkhead connector)

The M12 4 pin connector is designed for reliable signal transmission in industrial automation and harsh operating environments. Featuring an A-code 4-pin configuration and a secure threaded locking mechanism, this connector provides stable electrical connections while protecting against dust, moisture, and vibration.

This M12 panel mount connector is suitable for applications requiring dependable performance in sensors, actuators, control systems, and industrial equipment. Manufactured with high-quality materials and precision machining, it offers excellent durability and long service life, making it an ideal solution for demanding automation systems.

Key Features

• Standard M12 A-code 4 pin interface according to IEC 61076-2-101.
• Male panel mount design for secure equipment installation, female pins connectors are existing also.
• IP66, IP67, or IP68 protection (depending on configuration).
• Threaded locking mechanism prevents accidental disconnection
• 6u” Gold plated contacts for stable electrical conductivity and long-life durability.
• No recycle resin been used in connectors.
• Excellent resistance to vibration and mechanical shock
• Suitable for harsh industrial environments
• RoHS compliant materials
• Custom wire harness assembly and molded cable assembly are available.

Typical Applications

The M12 4 pin connector is widely used in various industrial automation applications, including:

• Industrial automation systems
• Industrial sensors
• Actuators
• PLC control systems
• Machine tools
• Robotics
• Factory automation equipment
• Process control systems
• Vision inspection equipment
• Packaging machinery
• Material handling systems

Product Benefits

Designed for demanding industrial environments, this connector offers more than reliable connectivity.

The threaded locking design helps maintain secure connections even under continuous vibration. Gold-plated contacts improve conductivity while reducing contact resistance and extending service life. The waterproof sealing effectively protects internal contacts from dust, moisture, and other contaminants, making the connector suitable for indoor and outdoor industrial applications.

With its standardized M12 interface, the connector can be integrated into a wide range of automation equipment while simplifying installation and maintenance.

Compatibility

This connector is compatible with various industrial devices utilizing the standard M12 A-code interface, including:

• Industrial sensors
• Proximity sensors
• Photoelectric sensors
• Pressure sensors
• Actuators
• PLC I/O modules
• Industrial controllers
• Automation equipment complying with IEC 61076-2-101

Technical Specifications

Typical specifications include:

• Connector Type: M12 A-code
• Number of Contacts: 4 Pins
• Gender: Male
• Mounting Type: Panel Mount (Bulkhead connector)
• Protection Rating: IP66 / IP67 / IP68
• Contact Material: Copper Alloy with 6u” Gold Plating
• Housing Material: Metal or Engineering Plastic (depending on model, no recycle resin been used in connector)
• Operating Temperature: -25°C ~ +85°C or custom -40°C ~ +105°C
• Rated Voltage: 250V
• Rated Current: 4A per pins

Pin Assignment

The standard M12 A-code 4 pin configuration includes four signal contacts designed for industrial automation applications.

Pin Assignment Front View	Number of pin	Function	Wire Color
	1	24V	Brown
	2	Signal I/O	White
	3	0V	Blue
	4	Signal I/O	Black

Ordering Information

Customized solutions are available to meet various application requirements, including:

• Wire or cable specification can be customized. (UV resistance, oil resistance, cold resistance, salt spray resistance….ect)
• You can define what AWG you want to use.
• Jacket materials can be customized. (PVC, TPU, HDPE, PE, LSZH, Rubber…..etc)
• Mounting styles: Panel mounting (bulkhead), Field attachable and overmolded cable assembly.
• Contact plating options: Standard pins are Gold plating 6u”, other thickness can be defined (10u”, 15u”, 30u”….etc)
• Connector orientation: We are not only provide standard code’s orientation, but also customized special orientation for customers.
• OEM and ODM customization are available.

Please contact HOLIN for detailed ordering information and customization options.

Downloads

The following technical documents are available upon request or download:

• Product Datasheet
• 2D Mechanical Drawing
• 3D File
• Product Catalog

Frequently Asked Questions

What is an M12 4 pin connector?

An M12 4 pin connector is a circular industrial connector commonly used for signal transmission in automation equipment, sensors, actuators, and control systems. The threaded locking mechanism provides reliable connections even in demanding industrial environments.

What is the difference between an M12 4 pin connector and a 5 pin connector?

A 4 pin connector is typically used for standard signal transmission, while a 5 pin connector provides an additional contact for more complex control or communication requirements. The appropriate configuration depends on the specific application.

Is this connector waterproof?

Yes. Depending on the model and installation method, this connector can achieve IP66, IP67, or IP68 protection, providing reliable performance in wet, dusty, and harsh environments.

Is this connector compatible with standard M12 interfaces?

Yes. This product is designed according to the standard M12 A-code interface and is compatible with many industrial automation devices that comply with IEC 61076-2-101.

Can Holin provide customized M12 connectors?

Yes. Holin offers OEM and ODM services, including customized cable assemblies, connector configurations, materials, wire lengths, and other specifications based on customer requirements.