YF011U2C2WCNB is a 4-tumbler miniature switchlock designed for secure access control in industrial and commercial equipment. This single-pole switch features 90° indexing with key-pull capability at positions 1 and 2, utilizing a zinc alloy lock body with stainless steel facing and an integral detent mechanism. The switchlock is rated for 4 amps at 125 V AC or 28 V DC, with silver-plated copper contacts providing contact resistance below 10 mO and an electrical life of 10,000 make-and-break cycles at full load. The unit includes two nickel-plated brass keys, operates with an insulation resistance of 10? O minimum, and features a dielectric strength of 1,000 Vrms at sea level. Typical applications include computer servers, point-of-sale terminals, and cash registers where positive detent and multi-position switching are required.