3900 Series Metal Lever Switches 3900 Series Metal Lever Switch with IP66 Protection 200000-Cycle Life and Customizable Illumination for Industrial Control Product Parameters Parameter Specification Product Name 3900 Series Metal Lever Switches Mounting Hole Ø15±0.16mm Material Options Stainless steel/Brass clad nickel/Alumina/Custom Contact Resistance ≤50mΩ Insulation Resistance ≥1000MΩ Dielectric Strength Contact-Panel ≥2000V Contact-Contact 1500V Mechanical Life 200,000