Schneider Electric, Harmony, ZB4BG7, Key Switch

Amazon

Progress with confidence designed for industry Flexibility and a robust construction An ingenious locking system consisting of a snap-fit head and body, tightened with a single screw, ensures easy yet secure mounting

Zoro Tools

Head for key selector switch. 22mm mounting diameter. Angle of throw: 45 degrees. Non-illuminated. Type Ronis 455 keylock.