The 803-A94RH is a rotating cam switch manufactured by Allen Bradley from the 803 series. It has 9 internal circuits for rotation and comes with N.C. (Normally Closed) contacts. The 803-A94RH comes in either Type 4 or Type 13 industrial enclosures, which are watertight, dust tight, and oil-protected. The approximate weight of the 803-A94RH is 56 pounds or 24.4 kilograms, and it is categorized as a Style A – NC Cam Opened Contacts. The shaft of the rotating cam switch for the 803-A94RH is located on the right-hand side and this is identified in the code by “RH” in the part number. The 803-A94RH without its shaft is 17.38 inches (441.3 millimeters) long and 18.44 inches (468.33 millimeters) high, with a depth of 6.81 inches (173 millimeters). The length of the shaft itself 2 inches (50.8 millimeters).

The recommended operating temperature for the 803-A94RH is -22 degrees Fahrenheit to 150 degrees Fahrenheit (-30 to 66 degrees Celsius) while the storage temperature range is around -22 to 200 degrees Fahrenheit (-30 to 93 degrees Celsius). The 803-A94RH comes with a 25 Amp N..C. double break contact; the maximum shaft speed is 150 RPM The 803-A94RH is normally used in assembly and packaging applications, injection molding applications, punch presses, and many more. They are also used for applications in which the machines require a repetitive cycle of operation and where the motion can be combined to the shaft rotation. The shaft rotates internally, in turn rotating the cam roller, which pushes the lobe and activates the circuit. The timing of activation of the switch is determined by the size of the lobe and the cam segment positions. The timing of the machine operations is thus controlled or determined by setting the timing and the dwell of the switches.