M12 Waterproof Connector
Overview
The M12 waterproof connector is an industrial circular connector with an M12×1 threaded coupling, designed for reliable signal and power connections in sensors, actuators, industrial Ethernet and fieldbus devices. Available in nickel-plated brass, stainless steel or engineered plastic housings, with gold-plated contacts and O-ring sealing, it achieves IP67 (IP68 on selected models) when mated, resisting dust, oil, coolant, washdown and vibration. We offer A-, D- and X-coded versions in 3 to 12 pins, straight or 90° angled, male or female, in field-wireable or overmolded cable styles. OEM/ODM customization, samples and bulk export supply are available. Contact us for a quote.
Get a Quote for This Product →M12 Waterproof Connector - Features
Standard M12 Thread
Threaded M12 coupling provides a secure and reliable connection for industrial equipment.
Waterproof Design
Sealed construction helps protect the connection against water, dust, oil and other environmental contaminants.
Multiple Pin Options
3-pin, 4-pin, 5-pin, 8-pin and other configurations are available for different applications.
Multiple Coding Options
A-Coded, B-Coded, D-Coded and X-Coded configurations are available depending on the application.
Straight & Right-Angle Types
Straight and 90-degree versions provide flexible cable routing in different installation spaces.
Multiple Mounting Options
Cable assemblies, panel-mount and other installation configurations are available.
Industrial Applications
Suitable for automation equipment, sensors, machinery and demanding industrial environments.
OEM Customization
Pin configuration, cable length, connector type, termination and labeling can be customized.
M12 Waterproof Connector - Specifications
| Product Type | M12 Waterproof Connector |
|---|---|
| Connector Type | Circular Industrial Connector |
| Thread Size | M12 |
| Pin Count | 3 / 4 / 5 / 8 pins, optional |
| Coding | A-Coded / B-Coded / D-Coded / X-Coded, optional |
| Coupling | Threaded locking |
| Connector Gender | Male / Female |
| Cable Direction | Straight / 90° Right-Angle |
| Mounting Type | Cable / Panel Mount |
| Protection Rating | Up to IP67 / IP68, depending on model |
| Rated Voltage | Model dependent |
| Rated Current | Model dependent |
| Contact Material | Copper alloy contacts, gold plating available |
| Housing Material | Nylon / TPU / Metal / Engineering materials, depending on model |
| Cable Jacket | PVC / PUR and other options |
| Operating Temperature | Model and cable dependent |
| Termination | Solder / Crimp / PCB / Pre-wired |
| Standards | Applicable industrial connector standards according to model |
| Customization | Pin count, coding, cable length, termination, labeling, etc. |
| Packaging | Neutral packaging or customized packaging |
M12 Waterproof Connector - Connector Structure & Materials
The structure and materials of a connector directly determine its electrical performance, sealing level, mechanical strength and service life. An industrial connector typically consists of a housing, an insulator, contacts, seals and a locking mechanism. Housings are available in nickel-plated brass, stainless steel or engineered plastics, balancing corrosion resistance and shielding. Contacts are usually made of gold- or silver-plated copper alloy to lower contact resistance and extend mating cycles. Insulators and gaskets use flame-retardant PA and PBT, plus NBR or FKM, to meet temperature, oil and waterproofing needs. Understanding each component helps you choose the right industrial connector for your environment, signal type and protection requirements.
Coding Type and Purpose
A-coded for sensors and power; B-coded for fieldbus (Profibus); D-coded for 100 Mbps industrial Ethernet; X-coded for 1/10 Gbps high-speed Ethernet. Different codings cannot be mated, so confirm before ordering.
Gender and Mounting Style
Cable male, cable female, panel-mount male and female receptacles, front or rear mount, PG9/PG7 or M16 panel threads, to match the equipment interface.
Contact Material and Plating
Copper alloy with gold plating (typically 0.2–0.8 μm or more) for low resistance, oxidation resistance and reliable low-level signals.
Housing Material and Finish
Nickel-plated brass (durable, good shielding), 316 stainless steel (corrosion-resistant, food and chemical use), PA/PUR plastic (lightweight, cost-effective).
Cable and Jacket Material
Overmolded cables in PVC (general), PUR (oil-resistant, abrasion-resistant, drag chain) or TPE (flexible at low temperature), 0.25–0.5 mm² conductors, shielded or unshielded.
Shielding Performance
Shielded housings with 360° grounding suppress EMI, suited to areas near drives and motors and to Ethernet links.
M12 Waterproof Connector - Applications
Industrial Automation and Sensors
Signal connections for proximity switches, photoelectric sensors, encoders, pressure and temperature transmitters.
Industrial Ethernet and Machine Vision
D/X-coded links for industrial cameras, switches, PLCs and remote I/O modules.
Robotics and Production Lines
Vibration-proof connections for robotic arms, AGVs and drag-chain applications.
Food, Beverage and Pharmaceutical
Stainless steel housings and washdown-resistant seals withstand high-pressure cleaning and sanitizing.
Heavy Machinery and Renewable Energy
Weather- and oil-resistant connections for wind, solar, EV charging and vehicle electrical systems.
Water Treatment and Outdoor Equipment
IP67/IP68 protection for pump stations, water-quality monitoring and pipeline pressure sensors.
M12 Waterproof Connector - Selection & Ordering
Select by Pin Count
Choose the appropriate number of pins according to power, signal and communication requirements.
Select by Coding
Match the connector coding with the equipment interface, such as A-Coded, B-Coded, D-Coded or X-Coded.
Select by Connector Shape
Choose a straight connector for conventional cable routing or a 90-degree right-angle connector where installation space is limited.
Select by IP Rating
For outdoor, wet or dusty environments, select an appropriate IP67 or IP68 configuration according to the actual operating conditions.
Select by Cable
Choose the required cable length and jacket material according to installation distance, movement, drag-chain operation, oil exposure and environmental conditions.
Bulk Purchasing
Sample orders, small-volume purchases and OEM bulk orders are supported. Product specifications can be confirmed before quotation and mass production.
M12 Waterproof Connector - Quality & Delivery
Incoming Inspection
Connector housings, contacts, cables, seals and other key components are inspected according to quality requirements.
Electrical Testing
Continuity, insulation and other relevant electrical tests can be performed according to the connector model.
Waterproof Testing
Sealing and waterproof performance are checked according to the specified protection rating.
Visual Inspection
Threads, contacts, housings, cables and assembly quality are inspected before shipment.
OEM Service
Connector configuration, cable length, labeling, packaging and selected electrical specifications can be customized.
Delivery Options
EXW, FOB and other international trade terms can be supported according to the order requirements, quantity and delivery schedule.
Suitable for Overseas Procurement
Supports sample orders, small-batch purchases, bulk orders, and OEM projects. Product packaging, labeling, cartoning, and export documentation can be arranged according to customer requirements.
M12 Waterproof Connector - FAQ
Can I order samples before bulk purchasing?
Yes. Samples can be supplied for testing dimensions, mating compatibility, electrical performance and installation requirements before a bulk order.
Are 90-degree M12 connectors available?
Yes. Both straight and 90-degree right-angle M12 connectors can be supplied depending on the model.
Can the cable length be customized?
Yes. Cable length can be customized according to the installation requirements. Different cable jacket materials can also be selected for specific environments.
Are male and female M12 connectors available?
Yes. Male and female versions are available in different connector and mounting configurations.
What is the difference between M12 A-Coded and D-Coded connectors?
Different coding systems are designed for different interfaces and applications. A-Coded connectors are commonly used for sensors and general signal connections, while D-Coded connectors are commonly used for selected industrial Ethernet applications. The coding must match the equipment interface.
What pin configurations are available for M12 connectors?
Common configurations include 3-pin, 4-pin, 5-pin and 8-pin versions. The appropriate configuration depends on the required power, signal and communication circuits.
Are all M12 connectors IP68 waterproof?
No. M12 refers to the connector size and threaded interface. The actual IP rating depends on the connector construction and sealing design. IP67 and IP68 versions are available depending on the model.
What are M12 waterproof connectors used for?
They are widely used for signal and power connections in industrial automation, sensors, PLC systems, robots, machinery, industrial communication and outdoor electrical equipment.