The 35-3197 is a general-purpose SP3T (single-pole, three-throw) keylock switch designed for on/on/on switching applications. It features a 4-tumbler lock mechanism with 1-position key removal capability and a metal key actuator, providing secure and controlled switching. The switch is rated for 4 amps at 125 VAC and operates with a 45-degree index rotation. It includes solder lug terminals for reliable electrical connections and is supplied with 2 keys and mounting hardware (nut and 2 screws). This switch is commonly used in control panels, equipment access systems, and applications requiring keyed switching with multiple circuit positions.