Allen-Bradley 800MR-H33B Key Switch

Allen-Bradley 800MR-H33B Key Switch is a key-operated control device from Rockwell Automation, offered here without a key and shown as pictured. This model is part of the Allen-Bradley 800MR family and functions as a mounted switch that provides operator access control for a circuit in industrial equipment. The listing includes the switch body only; no key is included, and the item is presented in the configuration shown in the product image. The 800MR-H33B designation identifies the specific hardware variant within the 800MR series. Typical applications include panel-mounted control points in manufacturing automation where a keyed input is used to enable or disable a machine function, such as start/stop or mode selection. In practice, a key switch helps restrict operation to authorized personnel, supporting safer and more controlled equipment use in industrial environments. When selecting a replacement, verify that the 800MR-H33B matches the mounting and interface of your existing 800MR hardware and consult Rockwell Automation documentation for installation guidance.