803-F312

The Allen-Bradley 803-F312 is a Style F rotating cam limit switch that has 3 circuits available and that has enclosure ratings of Type 1 and Type 13. Users can mount this switch on any plane without affecting its rotation, as it works well in either direction and at any angle for maximum flexibility. The heavy-duty 803-F312 switch also features external dwell time and timing settings that the user can adjust by using a screwdriver when the device is in motion. This switch comes with standard features like a left shaft extension, 10 Amp. snap action N. O. (normally open) and N. C. (normally closed) contacts, a cam duration of a minimum of 12 degrees and a maximum of 348 degrees, and a maximum shaft speed of 150 RPM. Also installed on this switch, like all other Allen-Bradley 803 series switches, is a spring-loaded cam-roller assembly mounted to the contact base.

Machines compatible with the 803-F312 switch are those with repetitive operation cycles where the general machine motion is correlated to the shaft rotation, and these include waterway gate or lock operations, injection molding machines, steel forming/heavy metals, punch presses, and assembly and packing machines. The 803-F312 switch has a non-operating temperature of -30 to 93 degrees Celsius and an operating temperature that ranges from -30 to 66 degrees Celsius. The typical shaft torques of this switch are 0.5 pounds on an inch with the cam roller in the valley, 7 pounds on an inch when the cam roller rides up on the cam ramp, and 3 pounds on an inch when the cam roller rides on the lobe. The 803-F312 measures approximately 7.06 x 4.81 x 2.41 inches and weighs 12 pounds or 5.4 kilograms.