The 1SFA611930R1003 is a key-operated selector switch from the ABB 22mm modular pilot device range. This three-position switch provides momentary action, with a spring return from positions A and C to the center position B. Security is enhanced as the key (Ronis 3433-E, code 73) can only be removed in the center position. As a modular component, it requires a holder and contact blocks to form a complete unit, and it offers a high degree of protection (IP66) and a mechanical life of 100,000 operations. It is designed for applications requiring secure, key-actuated momentary control in industrial environments.