CS-4 Rotary Switches Nidec Components CS-4 Rotary Switches have a stainless steel cover, epoxy housing, and a polyphenylene sulfide rotor with a silicone rubber 'O' ring. These switches are compatible with most automatic pick and place machinery (J-hook and Gull wing types only). CS-4 Rotary Switches are compatible with reflow and wave soldering and provide protection against dust, and are washable after soldering. These rotary switches have high reliability due to precious metal contacts, and their resin materials are UL Recognized 94V-0 or 94V-1 equivalent. Nidec Components CS-4 Rotary Switches are designed for high-density board mounting applications.