The 803-B124W device is a type of high-quality rotating cam switch that is designed for the purpose of meeting a number of various demanding industrial applications. These rotating cam limit switches are heavy-duty devices, generally utilized with industrial machinery involving repetitive cyclic movements in operation, wherein motion could be correlated to the overall shaft rotation of the machine. The 803-B124W operates equally well by rotating in all possible directions, even when it is mounted on any given plane. Amongst the various styles of the standard Bulletin 803 rotating cam limit switches by Allen Bradley, the 803-B124W fall under the category of the Style “B” switch devices. These devices are known for their characteristic behavior, some of which reflects the overall efficiency of the machine. The Style “B” 803-B124W devices represent the Type 1 & 4 as well as Type 13 enclosures and offer a maximum shaft speed of 150 Revolutions Per Minute (RPM). The 803-B124W devices have 2 to 12 independent cam operators and feature the 10 A snap action 1 N.O – 1 N.C. These rotating cam switches are capable of offering the cam duration of minimum 14 degrees and a maximum 346 degrees. The 803-B124W devices have left shaft extension as standard.

Style “B” machines representing the 803-B124W devices come with both timing and internal dwell adjustments. Both dwell and internal timing adjustments must be made when the 803-B124W device is not in its moving stage. To make the proper adjustments, first, loosen the cam bolts. Then rotate the cams to the desired position. When the given cams have been set to the desired position, the cam bolts may be re-tightened and the cover carefully reinstalled. The dwell and timing setting of the 803-B124W device will determine the overall machine operation. By gaining an in-depth understanding of the 803-B124W device, it can be used to the advantage of a user’s machine operations.