Siemens 3SE5112-0BH01 Limit Switch Rotary Lever

Siemens 3SE5112-0BH01 Sirius position switch with a 40 mm metal enclosure delivers robust end-of-travel sensing in automation equipment. It uses a rotary actuator with a 27 mm metal lever and a 19 mm plastic roller, adjustable to the left or right to fit mounting geometry, and a rear M20 x 1.5 conduit entry for wiring. The head carries a 1 NO/1 NC slow-action contact arrangement, enabling simple signaling of the detected position, and it is designed for industrial environments. Siemens’ specification for this model lists a mechanical service life of about 15 million switching cycles and electrical endurance up to 10 million cycles when used with appropriate control gear, making it suitable for high-cycle limit-switch duties such as conveyors, presses, or packaging lines.