Cole Hersee Domestic Cable Compatibility Guide

In complex environments such as industrial vehicles, construction machinery, trailers, agricultural equipment, and emergency rescue vehicles, the reliability of the electrical connection system directly affects the safety and performance of the whole vehicle. As a wire harness and connector brand with a history of a century, Cole Hersee (now a brand under Littelfuse) has always been the preferred choice in the heavy-duty vehicle and commercial vehicle fields. This article will analyze the design features of Cole Hersee cables and connectors, and introduce a reference for domestic substitute solutions, providing practical guidelines for users in the Chinese market.

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One, Cole Hersee brand and product characteristics

Cole Hersee has been involved in the field of heavy-duty vehicle electrical equipment since 1924. After many years of development, it has become a senior brand in heavy-duty, industrial, and commercial vehicle wiring harnesses and connectors. After being acquired by Littelfuse in 2010, its technical resources were further strengthened. The brand offers a wide range of automotive and vehicle electrical connector products, including trailer connectors/socket, plug and socket, ignition switches, relays, battery disconnect switches, and more. The products are specifically designed for environments with dust, mud, rain, snow, vibration, and significant temperature differences, such as trucks, construction machinery, construction vehicles, agricultural machinery, and emergency response vehicles. In terms of connector design, Cole Hersee uses corrosion-resistant metals or glass fiber-filled nylon for the housing, and solid brass pins for the contacts, ensuring stable and good electrical conductivity. The socket door is usually spring-loaded, capable of locking the plug in place, and provides additional waterproof and dustproof protection through O-rings, gaskets, or rubber sleeves. These designs ensure that the connectors maintain stable electrical connections even under long-distance transportation, construction site vibration, and severe weather conditions.

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Two, selection, compatibility, and domestic substitution scheme recommendations
In the Chinese market, users should pay attention to the following points when selecting and considering alternatives:
Selection Reference
For applications such as trailer lighting, braking, and auxiliary power, 4-Pole, 6-Pole, 7-Pole, and 13-Pole connectors/socket can be chosen. Among them, the 7-Pole is most commonly used, which balances basic lighting and auxiliary functions; the 13-Pole is suitable for more complex systems with more circuits.
For battery disconnect, power distribution, and overload current control, Cole Hersee relays, disconnect switches, and overload switches can be chosen.
Compatibility recommendations
Cole Hersee connectors comply with North American overload standards (such as SAE J560) and are compatible with mainstream trailer wiring harness systems. The existing system can be directly matched without the need for re-wiring.
• Domestic alternative solutions for reference

Domestic alternatives should meet the "heavy-duty" standard, including corrosion-resistant housing, waterproof sealing, dust and salt mist resistance, vibration resistance, and high and low temperature capabilities. Key parameters include pin material and contact method, housing protection grade, wire gauge compatibility, and circuit quantity. It is recommended to choose domestic suppliers that have passed ISO/TS or IATF16949 certification, and conduct salt mist, vibration, and thermal cycle tests to ensure reliability.

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The key to stable connection in harsh environments
The cables and connectors from Cole Hersee remain stable in harsh environments such as dust, mud, salt spray, vibration, and cold and hot cycles, primarily due to:
Material durability and structural reliability: Corrosion-resistant metal/glass fiber reinforced plastic shell, solid brass pins, and spring contact structure, enabling the product to withstand mechanical stress and current shock.
Waterproof and dustproof design: spring door, O-ring seal, and rubber protective sleeve effectively prevent water, dust, and salt from penetrating.
Standardization and Compatibility: Adhering to standards such as SAE J560, ensure compatibility with trailer, heavy-duty trailer, and other systems, allowing for interchangeable use.
Wide range of application scenarios: from trucks, construction machinery, agricultural machinery, to emergency rescue vehicles and airport vehicles, it can be used stably.
Choosing Cole Hersee is choosing a proven automotive-grade industrial high-reliability connection solution.

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Cole Hersee, as a century-old heavy-duty vehicle electrical connector brand, has fully optimized in design, materials, structure, protection, and standard compatibility, designed specifically for harsh environments and long-life requirements. Its products can benefit various scenarios such as construction machinery, commercial vehicles, trailers, agricultural equipment, and emergency vehicles. The domestic alternative solution should focus on material quality, protection, dust and water resistance, and contact quality to ensure compatibility and reliability.
We continue to focus on the research and development of domestic alternatives to Cole Hersee equivalent connectors and harnesses. If you are interested in domestic alternatives and related products, or have procurement needs, please contact: Manager Zhang.18665383950, WeChat number the same). We hope to have in-depth communication and cooperation with more customers and industry partners.