The 803-P6LH is a Bulletin 803 Rotating Cam Limit Switch, which is manufactured by Allen Bradley. This switch, which is a 1980 device, comes with 2 to 12 independent cam operators. The 803-P6LH also has 6 circuits. This switch is rated for a NEMA Type 1 enclosure which provides protection to machines against dust and light. Similarly to other Style “P” switches, it has a maximum shaft speed of 400 Revolutions Per Minute.

The 803-P6LH has internal dwell and timing adjustments. The internal dwell and timing adjustments should be made when the appliance is not in motion. To make alterations, withdraw the cover, unfasten cam bolts, and rotate the cams to the preferred operating position. This Rotating Cam Limit Switch has double break contacts. These normally closed cam-opened double break contacts have are rated at a 25A constant current. Switches with double break contacts are known for being long-lasting and supporting better contact dependability at the same time. When normally closed contacts are used, the cam lobe activates the cam roller to open the normally closed contact. The 803-P6LH has an exact shipping weight of 24 pounds (10.9 kilograms). Its dimensions are estimated for around 2.69 x 3.81 x 3.94 x 1.5 x 4.84 inches. While most of the Style “P” rotating cam limit switches are known to have the right-hand side shaft extension standard, the 803-P6LH has been modified to also include a left-hand side shaft extension. The 803-P6LH is commonly used in appliances where consecutive, recurrent, and systematic operations are necessary to enhance control circuitry.  When the shaft rotation causes motion either through a gear train or a roller chain, the 803-P6LH enables the independent circuits to open or close at any suitable angular positions. The appliances in which the 803-PL6H can be used include injection molding machines, assembly and packing machines, and punch presses.