Allen-Bradley 800FM-SM22 NSNBC01 Programmable Logic Controller Module

Allen-Bradley 800FM-SM22 is a rugged 22mm selector switch head from the 800F family designed for two-position, maintained operation in industrial control panels. This head uses a metal front ring and metal knob, with a black control element and no built-in illumination, and fits a 22.5 mm mounting hole. It is rated IP66 and Type 4/13 for harsh environments, with enclosure compatibility to withstand dust, water ingress, and washdown where required; it is supplied with front ring and configured for standard orientation. The switch offers 2 positions in a maintained (non-spring-return) configuration, with a mechanical design life of 1,000,000 cycles, and supports shock of 100 g and vibration of 10 g. Operating conditions include -25 °C ambient and up to 95% relative humidity from 25 to 60 °C (77–140 °F). This 800FM-SM22 part is typically used to manually select control sources or modes in automation equipment and control panels, providing a robust, non-illuminated manual operator that survives demanding industrial use in environments requiring IP66 protection. Compatible accessories in the 800FM line broaden mounting options and allow customization within standard 22 mm operator assemblies.