The Allen-Bradley 803-F812P3 is a Style F rotating cam limit heavy duty switch with a Type 1 and 13 enclosure ratings, 8 circuits, and 3 substituted internally adjustable cams. It is capable of rotating well in either a clockwise or counterclockwise direction and it has external dwell and timing adjustments that the user can configure even while the machine is moving by using a screwdriver. This Style F switch also comes with a standard left-hand shaft extension, 10 Amp. snap action N. O. (normally open) and N. C. (normally closed) contacts, and a cam duration that ranges from a minimum of 12 degrees and a maximum of 348 degrees, and a maximum shaft speed of 150 RPM. The 803-F812P3 switch is also equipped with a spring-loaded cam-roller assembly which is mounted to the contact base and which is mountable on any plane for maximum flexibility. People can use this switch on machines with repetitive operation cycles that have correlated machine motion and shaft rotation.

With its long life expectancy, the 803-F812P3 rotating cam limit switch has an approximate measurement of 12.31 x 10.06 x 5.03 inches and weight of 14 pounds or 6.4 kilograms. It has typical shaft torques of 0.5 pounds on an inch with the cam roller in the valley, of 7 pounds on an inch when the cam roller rides up the cam ramp, and of 3 pounds on an inch when the cam roller rides on the lobe. The operating temperature of the 803-F812P3 switch ranges from 30 to 66 degrees Celsius and its non-operating temperature ranges from -30 to 93 degrees Celsius.