Product Overview
Listed under our Industrial Wiring Harness product series, M12 industrial wiring harness is the most widely used circular connectivity solution for factory automation, sensor signal transmission and equipment power supply. We supply both field-wireable M12 connector housings and fully overmolded finished M12 industrial wiring harness, supporting full customization according to equipment installation space, pin definition and environmental protection grade requirements.

Two Main Types of M12 Industrial Wiring Harness
1. Field Assembleable M12 Connector Kits
The screw-lock metal shielded M12 plugs allow on-site wire termination without injection molding equipment. Available in male/female, straight type only, with 4Pin/5Pin/8Pin/12Pin core configurations. It is ideal for on-site wiring maintenance, temporary equipment debugging and small-volume project wiring, greatly improving field wiring flexibility for engineering teams.
2. Overmolded Finished M12 Industrial Wiring Harness
Our mainstream mass-production product is integrated injection molded M12 industrial wiring harness. We add reinforced strain relief bending sections at the cable outlet to effectively resist frequent bending, pulling and machine vibration. Two shapes are optional: straight straight-through type and 90° elbow right-angle type, which perfectly solves the narrow installation space problem of embedded automation sensors.
Core Technical Advantages of Our Custom M12 Industrial Wiring Harness
1. Reliable IP67 Waterproof & Dustproof Performance
With built-in silicone sealing ring and threaded locking structure, the M12 industrial wiring harness reaches IP67 protection level, effectively blocking workshop oil mist, water splashing and metal dust, stable operation in harsh industrial production environments.
2. Anti-interference Shielded Structure Option
Metal nickel-plated outer shell can be fully grounded for electromagnetic shielding, which greatly reduces signal distortion caused by frequency converter, motor and high-power equipment interference. Shielded M12 industrial wiring harness is the standard choice for high-precision encoder and measuring instruments.
3. High-Grade Conductive & Insulating Materials
Internal terminals adopt brass gold-plated pins to ensure low contact resistance and long plugging service life. Outer cable uses flame-retardant PVC/PUR jacket, temperature-resistant and anti-aging, fully conforms to industrial wiring harness safety standards.
4. Flexible Full-Dimension Customization
As a professional industrial wiring harness manufacturer, we support:
✅Different pin numbers: 2/3/4/5/8/12Pin M12 wiring harness
✅Cable length, wire gauge, shielded/unshielded selection
✅Straight / 90° elbow, male plug / female socket combination
✅Add wire number labels, heat shrink sleeves and fixing brackets

Main Application Scenarios
✅Factory automation proximity sensors, photoelectric switches, encoders
✅Packaging machinery, textile equipment, logistics conveyor control system
✅Intelligent AGV robots, testing and measuring instruments
✅Outdoor monitoring equipment, new energy small module signal wiring
Strict Quality Control for Industrial Wiring Harness
Each batch of M12 industrial wiring harness undergoes 100% continuity test, high voltage withstand test, crimp pull force test and plugging durability test before delivery. All finished cables are inspected for sealing performance to avoid hidden dangers of short circuit and signal interruption during long-term industrial operation.