The Allen-Bradley 803-B64RY35TO1 is a Rotating Cam Limit Switch from the series 803 of drives. This heavy-duty designed device is intended for use on industrial machinery with a repetitive cycle of the machine process. These industrial machines are the ones with relatively slower speeds and applications that include press machines, injection and blow molding machines, rubbery products machines, and steel-forming machines. The 803-B64RY35TO1 tracks machine movement, which is correlated with its shaft rotation, and opens or close independent circuits at any user-defined angular position. The device is equally effective and performs its function regardless of whether its shaft rotates clockwise or counterclockwise and its installation is permitted in any plane. This drive is composed of high-quality materials in order to provide it with a long lifetime, even in rough working conditions.

The 803-B64RY35TO1 rotating cam limit switch is packaged in the "B Style" casing. Its enclosure can be either Type 4 or 13. Six separate cam-rollers are mounted on a shaft, where they perform the opening and closing of six independent single pole double throw contacts (10A rated contacts). Each cam assembly can switch contact states in the desired position from the angular range of 14 to 346 degrees. This model has a single-ended shaft (with a shaft extension on the left-hand side). The suffix code 35TO1 shows that this product has a non-standard gear ratio of 35:1.The 803-B64RY35TO1 rotating cam limit switch has the following dimensions: 13.44 x 14.5 x 6.81 inches (341.3 x 368.3 x 173.0 millimeters). The product’s weight is approximately 53 pounds (24 kilograms) and its acceptable working temperature range is -22 to 150 degrees Fahrenheit (-30 to 66 degrees Celsius). Allen-Bradley ceased production of the 803-B64RY35TO1 in the year 2007.