PE "earth" busbar on DIN-insulator SHNI-6x9-4 NO-222-89-1 is nickel-plated. Yellow. Era B0044138

Busbars with an insulator of the ShNI type are designed for the electrical and mechanical connection of neutral, protective, and phase conductors. They are made of high-quality brass, mounted on a plastic insulator or in an insulator made of self-extinguishing plastic.