Material And Quality Standards For Push-in Terminals

The conductive components of push in din rail terminal blocks are typically made of copper and copper alloys. According to national standards, the copper content of its conductor should reach more than 58% to ensure the excellent conductivity and corrosion resistance of push fit din rail terminals. High-purity copper has a similar coefficient of thermal expansion to the conductor, effectively preventing contact loosening in environments with temperature fluctuations. Nickel-plated steel screw components can prevent the battery effect in humid environments, extending the lifespan of push fit terminal block.

Currently, most push in terminal materials on the market are engineering plastics such as PA66 and polycarbonate (PC). PA66 material has a withstand voltage strength of up to 600 kV/cm and maintains stable performance within a temperature range of -40℃ to 100℃. These materials must meet the UL94-V0 flame retardant rating and be certified by REACH and RoHS to meet environmental standards.