Allen Bradley manufactures the 803-B44, a rotating cam limit switch that is also part of the Bulletin 803 switch product line. This module’s user can adjust the contacts at any angular position of this switch, which can handle any speed between zero and 150 RPM, in either direction. In addition, contact setting is allowed between 14 degrees to 346 degrees. This rotating cam limit switch comes with heavy-duty snap action contacts. Its contacts provide actuation at a uniform rate, allowing users to depend on the precision and accuracy of the contacts in terms of opening and closing circuits while the shaft is rotating. This model is often times preferred over other models, especially in applications that require repetition, sequence action, and accuracy. The user can also adjust each switch setting based on the requirement of the circuit. The 803-B44 is a custom Bulletin 803 model from Allen Bradley. This module requires little maintenance as long as it was installed properly. It uses durable precision bearings on a switch shaft to ensure smooth performance of the assembly.

The “B” in the catalog number of this module (803-B44) indicates that the switch is a Style “B” internal adjustment model. Before one can modify the dwell time, the operator must first remove the cover. Some of its features include four independent cam operators, Type 1 and 4 enclosures, and a standard left shaft. To ensure the optimum performance level of the rotating cam switch, ensure that the ambient temperature is within this module’s specified limits. Its operating temperature should be between 22 and 150 degrees Fahrenheit. When not in use, the switch should be stored within a temperature range of 22 to 200 degrees Fahrenheit. When installing the 803-B44, ensure that the machine is in its start cycle position.