Quick Summary:
Our 15EDGRK-3.81mm wire harness is a high-reliability solution for industrial control and PLC interfacing. Featuring a secure pluggable terminal block with screw-clamping technology and UL94 V-0 flame retardancy, these custom assemblies ensure vibration-resistant connectivity and simplified maintenance in automation cabinets and sensor networks.
Product Overview
Our 15EDGRK-3.81mm series industrial wire harness is a specialized interconnect solution designed for rapid deployment in automation environments. Featuring the industry-standard 3.81mm pitch pluggable terminal block, this harness provides a secure, screw-clamping interface that facilitates quick-connect and disconnect functionality for maintenance and installation. Ideal for bridging signals between PLC controllers, HMI panels, and remote sensor arrays, this assembly incorporates high-quality tinned copper wiring and precision-crimped secondary connectors (such as JST SM series). Built to endure the electrical demands of industrial control cabinets, our harnesses ensure absolute signal reliability and robust power delivery.
Product Specifications
| Specification Item | Technical Details |
| Main Connector | 15EDGRK-3.81mm Pluggable Terminal Block |
| Secondary Connector | JST SM / XH / DuPont or Custom Equivalents |
| Pitch | 3.81mm (Main) / 2.50mm – 2.54mm (Secondary) |
| Circuit Count | 5-Pin (Customizable from 2P to 24P) |
| Wire Gauge | 18 AWG to 26 AWG (UL Certified) |
| Rated Voltage | 300V AC/DC |
| Rated Current | 8A – 10A (Depending on Wire Gauge) |
| Insulation Material | PA66 Housing (UL94 V-0) / PVC Wire Jacket |
| Compliance | RoHS, REACH, CE |
Key Features
Pluggable Terminal Efficiency
The 15EDGRK connector features a high-reliability pluggable design that allows for instantaneous connection to PCB headers. This minimizes downtime during equipment maintenance and eliminates wiring errors during field installation, making it the preferred choice for modular industrial systems.
Secure Screw-Clamping Mechanism
Equipped with a precision screw-clamping system, this harness ensures a high-pressure contact point that resists loosening due to vibration or thermal expansion. This mechanical security is vital for maintaining consistent electrical conductivity in high-vibration machinery and automated assembly lines.
Hybrid Signal & Power Conversion
Our design bridges standard 3.81mm terminal blocks with compact secondary connectors, allowing for easy “conversion” between different interface standards. This is particularly useful for connecting decentralized sensors and actuators to a centralized PLC control rail without complex on-site soldering.
Industrial-Grade Strain Relief
Every connection point is reinforced with professional-grade heat shrink tubing and precision crimping. This provides excellent strain relief, preventing core breakage at the terminal entrance and ensuring the harness can withstand the physical pulling and routing stresses common during control cabinet assembly.
Industrial Applications
PLC & Control Cabinet Wiring
The primary interconnect for Programmable Logic Controllers (PLCs) and DIN-rail mounted equipment. It simplifies the wiring of I/O modules and power distribution blocks in complex automation cabinets.
Industrial Sensor & Actuator Links
Ideal for connecting proximity sensors, pressure transducers, and solenoid valves to a central control unit, providing a clean and organized wiring topology for industrial IoT (IIoT) applications.
CNC & Motion Control Systems
Ensures stable signal transmission for stepper motor drivers and limit switches in CNC machinery, where secure connections are required to prevent data loss or mechanical interference.
Technical & Surface Performance
Each terminal is manufactured from high-conductivity copper alloy with tin plating to ensure superior anti-oxidation properties. The PA66 housing offers excellent dielectric strength and is rated UL94 V-0 for flame retardancy. All wire leads are 100% pull-tested and verified for continuity, ensuring that every harness meets the high-reliability standards required for 24/7 industrial operations.
Bespoke & OEM Manufacturing
We provide deep customization for specific industrial hardware requirements:
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Custom Pinout Configuration: Tailored wiring paths between the 3.81mm terminal and secondary connectors to match your PCB pinout.
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Specialized Labeling: High-durability identification tags with circuit names or PN codes for rapid field diagnostics.
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Variable Wire Lengths: Precise lead lengths optimized for your specific enclosure dimensions to reduce cable clutter.
Production Process
Precision Terminal Integration
We utilize calibrated torque tools and automated crimping stations to ensure every screw and terminal contact meets strict mechanical pull-force specifications.
Digital Continuity Validation
Each assembly is 100% tested using a computerized harness tester to confirm zero short circuits and perfect pin-to-pin mapping, guaranteeing out-of-the-box functionality.
Industrial Heat-Setting & Finishing
Protective heat-shrink layers are applied using controlled-temperature air systems to ensure a uniform seal and professional aesthetic, providing both insulation and mechanical reinforcement.
FAQ
Is the 15EDGRK connector compatible with standard Phoenix or Degson headers?
Yes, the 15EDGRK-3.81mm is a cross-compatible industrial standard designed to fit most 3.81mm pitch male headers from major brands like Phoenix Contact and Degson.
What wire gauge do you recommend for an 8A current load?
For an 8A load, we typically recommend 18 AWG or 20 AWG UL-certified wire to ensure minimal heat generation and voltage drop over longer distances.
Can you provide the harness with the mounting ears on the connector?
Yes, we can supply the 15EDGRK version with or without side mounting ears (flanges) depending on whether you need a screw-locked plug-to-header connection.
Do you offer customized labels for each wire lead?
Absolutely. We can add wrap-around heat shrink labels or flag-style tags with custom text, QR codes, or wire numbers to facilitate easier installation.
What is the difference between 3.5mm and 3.81mm pitch connectors?
While they look similar, they are not interchangeable. The 3.81mm pitch is slightly wider and is the most common standard for North American and European industrial controllers.
Are these harnesses suitable for high-vibration environments?
Yes, the screw-clamping mechanism provides a much more secure connection than standard friction-fit connectors, making it ideal for machinery with moving parts.