HB 4-Pin Connector to O-Type Ring Ground Terminal Wire Harness

Our product is a customized wire harness specifically designed for equipment grounding protection and power connection applications, featuring a standard HB 4-pin connector on one end and an O-type (ring-shaped) ground terminal on the other. It is widely used in household appliances, industrial equipment, new energy vehicles, power supply enclosures, distribution cabinets, and various electrical systems requiring reliable grounding protection. The HB series connector offers strong versatility and stability within the industry, with a well-designed internal structure and moderate insertion/removal feel, allowing it to match well with most standard HB female sockets or corresponding receptacles available on the market. Insertion and removal are smooth and free of sticking, and the terminal resists poor contact or loosening even after repeated long-term use, fully ensuring the reliability of electrical connections in actual applications.
The O-type ring terminal is one of the most common and widely used ground terminal formats, with a structural design that facilitates secure fastening to equipment housings, ground bars, or grounding studs using bolts or screws. Compared with open-ended U-shaped or fork-shaped terminals, the O-type terminal is far less prone to detachment due to external vibration or loosening once fastened, providing more stable and lasting grounding protection — particularly suitable for industrial equipment, power equipment, and outdoor installations where grounding reliability is critical. The terminal is stamped from high-quality copper alloy and surface-treated with tin plating, offering excellent conductivity and oxidation resistance that effectively reduces contact resistance, ensuring the low-impedance characteristics required of a grounding circuit and fully delivering the safety protection that grounding is intended to provide.
The wire section of the harness uses high-quality copper core conductors, with cross-sectional area selectable according to the customer's actual current-carrying and grounding current requirements, wrapped in a wear-resistant, aging-resistant, and flame-retardant insulation sheath capable of withstanding a variety of demanding environments, including humidity, alternating high and low temperatures, and dusty or oily conditions. We support in-depth customization of overall harness length, conductor wire gauge, sheath color, terminal hole diameter (to match different bolt/screw sizes), and the specific HB terminal model according to each customer's device interface standards and installation requirements, fully accommodating diverse customer needs. During production, we strictly implement continuity testing, tensile strength testing, terminal crimp strength testing, and visual inspection as part of a multi-layered quality control process, ensuring every harness meets relevant industry standards before shipment. This allows us to provide customers with a safe, reliable, and long-lasting grounding connection solution, serving industries such as appliance manufacturing, industrial automation, new energy, and power equipment.