AHX671 is a protection cover for round and square head pushbuttons and selector switches manufactured by Fuji Electric. It is designed to protect against accidental operation of control switches in industrial applications such as machine tools, control panels, and instrumentation panels. The cover features dimensions of 33.2 mm outer diameter with a height of 31.5 mm, and an inner opening of 23.5 mm, making it compatible with standard 16mm and 22mm diameter command switches. The maximum applicable panel thickness is 2.6 mm, and the cover is not used for illuminated pushbuttons with guard rings. This accessory improves safety and reliability in complex multifunctional control environments by providing a physical barrier against unintended switch activation.