803-F312T

The Allen-Bradley 803-F312T is a rotating cam limit Style F switch that is heavy-duty and comes with Type 1 and Type 13 enclosure ratings, 3 circuits, and cams that are internally adjustable. The external dwell time and timing settings of this switch are adjustable and users can do so by using a screwdriver even while the switch is operating and it can rotate in either direction without issue. Like all 803 switches, the 803-F312T switch comes with a spring-loaded cam-roller assembly that is mounted to the switch’s contact base. Features specific to this style of the switch include a cam duration ranging from a minimum of 12 degrees and a maximum of 348 degrees, 10 Amp snap action N. O. (normally open) and N. C. (normally closed) contacts, a standard left shaft extension and a maximum shaft speed of 150 RPM.

Compatible with this switch are machines that have repetitive operation cycles where the machine’s motion correlates to the shaft rotation. Machines for steel forming, assembly and packing, punch pressing, and injection molding machines, are among the types of machines that the 803-F312T is made for. The 803-F312T switch measures 7.06 x 4.81 x 2.41 inches and it weighs 5.4 kilograms or 12 pounds. Users can mount it onto any plane. Its storage temperature is from -22 to 200 degrees Fahrenheit, while its operating temperature is -22 to 151 degrees Fahrenheit. The 803-F312T has typical shaft torques of 0.5 pounds on an inch with the cam roller in the valley, 3 pounds on an inch when the cam roller rides on the lobe, and 7 pounds on an inch when the cam roller rides up the cam ramp.