The Y1011U6R203NQ is a 6-tumbler switchlock designed for secure key-controlled switching applications. It features 90° indexing with single-pole (SP) configuration, supporting key-pull positions at locations 1 and 2, and includes solder lug with hole termination (option 03). The switchlock is constructed with copper contacts that are silver-plated, a zinc alloy mounting nut, steel zinc-plated mounting clip, and brass nickel-plated dress nut, with an epoxy terminal seal. It delivers a contact rating of 4 amps at 125 V AC or 28 V DC, maintains contact resistance below 10 mO typical, and exceeds 20 kV DC static resistance at sea level. This switchlock is ideal for point-of-sale terminals, cash registers, and computer applications where reliable key-controlled access and anti-static protection are required.