The XB2BS142 is a 22mm mushroom head rotary push button switch with a key controlled emergency stop function. It features a 1NC contact configuration and a 2position locking mechanism, offering secure, restricted operation in industrial control panels. Key benefits Enables immediate machine stoppage in emergencies, enhancing operator safety and process protection. Keyed locking provides tamper resistance and ensures only authorized personnel can operate or reset the switch. 2position locking allows secure control of the switch state, helping prevent unintended restarts during maintenance or setup. Fits standard 22mm panel cutouts, facilitating straightforward integration into existing control panels. Key attributes Model: XB2BS142 Contact configuration: 1NC (one normally closed contact) Operation: Rotary push button switch with 2position locking Head size: 22mm mushroom head Mounting: 22mm panel cutout Type: Keyed emergency stop switch for safety and control applications Compatibility: Part of the 22mm XB2 family designed for standard industrial installations Use cases Emergency stop on conveyor lines or production equipment to halt operation quickly and reliably. Maintenance lockout: insert and use the key to lock the switch in a safe position, preventing unintended reenergization during servicing. Safety control panel on machine tools or processing equipment where restricted restart access is required. This description preserves the specified model features while outlining practical benefits, capabilities, and typical applications in a clear and professional format.