Summary of lessons learned from the quality accident of Industrial Shields domestic connectors

Industrial Shields is a Spanish company focusing on the development and manufacturing of industrial automation products based on open-source hardware (Ardbox/Arduino PLC, Raspberry Pi PLC, ESP32 PLC, etc.), applied to industrial controllers in automation fields such as PLC, gateway, and Panel PC. Although the specific connector models are not disclosed on the official website, its products are widely used in industrial scenarios for connecting to sensors, relays, and actuators.

Typical cases and root causes of quality accidents in domestically produced connectors
Common quality accidents and failure modes
From typical failure cases of general industrial connectors, we summarize the following typical problems:
Poor contact or open circuit: accounting for about 61% of the failure modes, caused by reasons such as contact corrosion, structural loosening, and material mismatch.
●Poor environmental adaptability: In high temperature, humidity, or vibration environments, domestically produced connectors with poor mechanical strength are prone to failure or deformation, thereby affecting system stability.
Electromagnetic compatibility (EMC) issues: In industrial control systems, connectors need to have anti-interference capabilities. Poor shielding design or irregular grounding methods can easily cause data transmission errors.
Improper installation leads to failure: incorrect crimping, wire stripping, and improper shielding grounding treatment can easily cause later contact failure or performance degradation.
Lesson Summary
● Strictly adhere to quality standards: During the design and production process, domestic connectors must ensure that materials, electrical performance, and environmental adaptability meet industrial-grade requirements, at least equal to the connectors used by Industrial Shields.
Ensure shielding and grounding: Use a full-enclosed shielding design or a 360° shielding connection structure, and choose single-ended or double-ended grounding methods according to the system grounding conditions.
● Pay attention to the installation process: workers must strictly follow the stripping, crimping, and shielding handling procedures, and it is recommended to use professional tools and terminals to reduce human errors during installation.

Strengthen the testing and verification mechanism: Conduct tests such as high and low temperature cycles, vibration corrosion, and EMC immunity, and establish an on-site feedback and improvement mechanism to ensure long-term stable operation.

Domestic connectors must learn from the lessons of quality accidents when replacing Industrial Shields products, strengthen material, structure, shielding, grounding, and installation process control, and combine with strict testing to ensure reliability, anti-interference, and environmental resistance while maintaining cost advantages, truly achieving a leap from "domestic quality" to "industrial stability."
If you are interested in domestic alternatives for this type of connector or have bulk purchasing needs, or if you have a production or sales channel for domestic alternatives of this brand connector and wish to engage in in-depth cooperation and communication, please contact us:Manager Zhang (18665383950, same WeChat number)We look forward to building high-quality supply chains with more industry partners.