Auxiliary switch, 1S+1Ö, accessory for main and emergency stop switches 3LD2 front mounting and for main and emergency stop switches 3LD5 UL front mounting. The SENTRON 3LD2 main and emergency stop switches are designed for the safe disconnection of loads in various applications, such as three-phase motors, climate and ventilation systems, in processing and manufacturing machines in mechanical and conveyor systems, in the chemical industry, or in the food and beverage industry. Modular design allows for quick and easy installation of auxiliary switches, N-PE terminal, or 4th pole. Optimal network separation from 16 A to 250 A is achieved through the lockable rotary drive. Protection class up to IP 65 with encapsulated housing for outdoor applications. Versatile and globally applicable thanks to international IEC, UL, CCC, and marine approvals. The 3LD main and emergency stop switches are available in a variety of versions for front mounting, mounting plate, DIN rail, or panel installation, optionally with direct or door coupling rotary drive. For the 3LD2, versions for DC applications are also available. 3LD main and emergency stop switches - providing consistent safety for users and systems.