The Allen-Bradley 803-F1212X Style F switch is a rotating cam limit switch that is equipped with 12 circuits and a double shaft extension. Users can use this switch for machines which work with repetitive operation cycles, with the machine’s motion correlated to the switch’s shaft rotation. The 803-F1212X switch also allows the user to adjust its external dwell and timing while the device is in motion with the use of a screwdriver, and it has a spring-loaded cam-roller assembly that is mounted to the switch’s contact base. Style F switches like this one come with a maximum shaft speed of 150 RPM, with 10 Amp. snap action contacts (1 N. O. or normally open and 1 N. C. or normally closed), and a cam duration that ranges from a minimum of 12 degrees to a maximum of 348 degrees.

The typical shaft torques of this rotating cam limit switch are 3 pounds on an inch when the cam roller rides on the lobe, 7 pounds on an inch when the cam roller rides up the cam ramp, and they are 0.5 pounds on an inch with the cam roller in the valley. Its non-operating temperature range -30 to 93 degrees Celsius and its operating temperature is -30 to 66 degrees Celsius. Suitable for heavy-duty use, the 803-F1212X switch has enclosure ratings of Type 1 and 13 and a long lifespan. It can be mounted on any type of plane and its mounting does not affect its rotation, which works well in either a clockwise or a counterclockwise direction. This switch has an approximate weight of 9.1 kilograms or 20 pounds and measures 17.56 x 15.31 x 7.66 inches in dimensions.