NKK Switches - 65 Years, Over 4 Million Products Over its 65-year history, NKK has designed and manufactured the industry’s most extensive selection of electromechanical switches setting the standard for quality, stability and reliability in switch solutions. Available in a variety of actuator types including toggle, rocker, pushbutton, slide, rotary and keylock switches to illuminated, process-sealed, miniature, surface-mount, touch screen and programmable switch devices.