Honeywell TVZ0027 A57 Limit Switch

The Honeywell TVZ0027 A57 is a Honeywell Sensing and Productivity Solutions SL1-D limit switch — a compact, panel-mount snap‑action device used to sense end‑of‑travel positions in automation equipment. It provides SPDT contacts (one normally open, one normally closed) with a 5 A at 125 VAC electrical rating, enabling reliable control circuits and interlock signaling in machines. The enclosure carries an IP67 rating for dust and water resistance, and the unit’s compact footprint measures 59.8 mm high by 44.2 mm wide by 18 mm deep. The SL1-D family is offered with multiple actuators; actuator configurations for this line include top pin plunger, top roller plunger, top cross-roller plunger, and top roller lever, allowing customization to specific mounting needs. Common applications include machine tools, conveyors, and other automated systems where precise position feedback and safe interlock signaling are required, with UL and CSA approvals noted for this class of switch.