This Bulletin 803 Rotating Cam Limit Switch, the 803-PL4, is an Allen Bradley product. This is a heavy-duty control circuit device is used in a variety of applications, such as assembly and packing machines, steel forming or heavy metals, punch presses, lock operations, injection molding machines, and more. The 803-PL4 is used with a type of machinery in which the machine’s motion is correlated to the shaft rotation. These Rotating Cam Limit Switches are designed for heavy-duty operations and for a long and sustained life. With six varying styles, this series of Allen Bradley products are used for comprehensive purposes. The Styles “A” and “B” both have an internal adjustment, Style “E” and “EF” have external timing and internal dwell adjustment, Style “F” modules have external timing and dwell adjustment, and the Style “P” modules have high speed and low-cost internal adjustment.

The 803-PL4 Allen Bradley product is a Style “P” Rotating Cam Limit Switch. The shaft extensions are what is seen on the front of the device. The Styles A, B, E, EF, and F have a left-hand side shaft extension, while the Style “P” modules come with a right-hand side shaft extension. The 803-PL4 has a 25 Ampere N.C. double break contact. It also has 2 to 12 independent cam operators. The Allen Bradley product, 803-PL4, has a Type 1 enclosure and an approximately 400 RPM shaft speed at maximum. The 803-PL4 is available both with and without cams. The cam duration ranges from 11 to 349 degrees. Also, this Allen Bradley product has 2 to 12 independent cam operators. Having approximately 15 pounds of weight, the 803-PL4 has four circuits in a Type 1 enclosure.