Azbil SL1-A Limit Switch

Azbil SL1-A is a compact horizontal limit switch with a roller-plunger actuator, designed for precise position sensing in automation equipment. As part of Azbil’s SL1 general-purpose line, it delivers a rugged, maintenance-free solution for general industrial machinery, plants, and outdoor equipment. The basic SL1-A configuration (roller plunger, without connector) is rated for up to 11.8 N of operating force, with 1.5 mm pretravel, 3 mm overtravel, and a 0.1 mm movement differential, enabling reliable switching within tight tolerances. It uses a single-pole double-throw (SPDT) contact arrangement, available in standard silver contacts or low-current gold variants. The mechanism features a two-piece-spring design and supports up to 20 million mechanical operations. Certifications include UL, CSA, CE, and CCC markings for common industrial compliance. The SL1 family’s compact body supports tight gang mounting and is suitable for use on conveyors, presses, and other general industrial control panels; variants such as SL1-AK and SL1-PD expand options for wiring and accessories. These details are drawn from Azbil’s official SL1 catalog and product pages, which emphasize the compact form factor, high switching precision, and broad applicability of the SL1-A in general industrial automation.