Allen-Bradley 800T-H31A Selector Switch Cylinder Lock

Allen-Bradley 800T-H31A is a 30 mm, non-illuminated two-position selector switch with a cylinder lock designed for panel mounting in industrial control enclosures. It provides two distinct positions and uses a pair of contacts: one normally open (NO) and one normally closed (NC), enabling simple logic such as start/stop or forward/reverse in a single actuator. The unit is supplied with a D018 key for left-hand key removal, corresponding to the H31 code, which supports keyed access to the operator and enhances safety by allowing the switch to be secured in a given position when servicing or maintaining equipment. This cylinder-lock variant belongs to Allen-Bradley’s 800T family, which is optimized for rugged industrial environments where durable, keyed operation is required in a compact 30 mm footprint. In typical panel installations, the 800T-H31A serves as a straightforward control interface for basic circuits, lockout scenarios, and safety interlocks, providing reliable mechanical action and predictable electrical behavior without illumination.