Specifications Of Connector Lugs

The core parameters of the connector lug include the compatible cable cross-sectional area (0.5-630mm²), rated current rating (10-1000A), inner diameter, total length, wall thickness, and bolt hole diameter. Its specifications must strictly comply with standards such as GB/T 14315, IEC 61238, and DIN 46235.

An example of model naming logic is as follows: "OT-35/8" indicates a 35mm² cable with an 8mm bolt hole diameter; "SC-50-TIN" indicates tin plating and salt spray resistance ≥96 hours. The rated current is calculated based on an ambient temperature of 40℃ and a temperature rise ≤50K. In actual applications, derating should be considered (typically 15%-20%).

Size matching principles include the wire-to-hole matching principle (the inner diameter must be 0.2-0.5mm larger than the cable's outer diameter), and the bolt compatibility verification principle (the bolt hole diameter should be 0.2-0.5mm larger than the bolt diameter).

Common surface treatment methods include pickling (preserving the natural color of red copper and enhancing oxidation resistance), tin plating (a silvery-white surface that improves conductivity and oxidation resistance, with salt spray resistance ≥96 hours), and silver plating (used in high-frequency or high-conductivity applications).