When electrical conductors are connected in terminal blocks or screw clamps, the choice of materials is critical for long service life and safety. The wrong combination can lead to corrosion, increased contact resistance, and in the worst case overheating. Here is what you need to know. Materials in our terminal blocks The terminal block we use in OTAC-SW22T is built with:Screws: Steel, zinc-platedSpring: Phosphor bronze, nickel-platedConductor clamp: Brass, nickel-platedPlastic: PBT, flame-retardant UL94V-0Nickel-plated brass is a stable combination with copper conductors. The zinc-plated ...
