Allen-Bradley 800FM-KM22R Key Maintained Selector Switch

The Allen-Bradley 800FM-KM22R is a 22.5 mm metal-bodied, two-position key-maintained selector switch from the 800F family, designed for panel mounting in rugged industrial environments. This maintained selector provides a keyed actuator with right-side key removal to support lockout/tagout procedures and prevent unauthorized actuation while the key is retained. It ships without a power module or lamp and uses a standard keying option (key code 455 in the standard pack) to help ensure proper keying and interchangeability with other 800F KM-series devices. The rugged die-cast zinc housing, finished with chromate plating, offers durability against vibration and harsh conditions, while the device’s 22.5 mm footprint fits common 22 mm panel openings and mounting hardware. Typical applications include machine start/stop control, process sequencing, and safety interlocks where operator authorization matters; it can be paired with compatible 800F accessories for multi-position configurations in control panels.