Allen-Bradley 801-ASA11 Limit Switch

The Allen-Bradley 801-ASA11 is a general-purpose limit switch with a roller lever actuator, designed for reliable end-of-travel sensing in light-to-medium duty industrial equipment. Housed in a Type 1 enclosure, this slow-action, spring-return switch is configured as Arrangement A, meaning it provides a single normally open (Form A) contact. The roller lever enables precise actuation by small mechanical movements, with a travel-to-operate specification of up to 3 degrees and a minimum over-travel of 8 degrees, enhancing repeatability in cycling machinery. The unit is typically rated for 120 VAC at 3 A, making it suitable for simple control circuits and interlock functions. The 801-ASA11 is part of Allen-Bradley’s 801 family of general-purpose limit switches and is commonly used on conveyors, presses, and assembly-line equipment to detect limits and trigger machine controls. This model is designed for indoor environments (NEMA 1 enclosure) and delivers dependable performance with slow-action, spring-return operation that helps suppress chatter and false trips in regular motion systems.