Rotating cam limit switches are used for detecting and controlling the rotational movement of the heavy-duty machines and equipment carrying out a myriad of industrial applications. The Bulletin 803-B12X rotating cam limit switch can be used as a specific control device to ensure the ease of normal machine operation or even as emergency switches. Because of its specific configuration, the 803-B12X device can be used for solving a multitude of industry-specific problems, such as manufacturing, packaging, consumer applications, heavy machinery issues, motor controlling, and several others. Within the scope of these specialized applications, the 803-B12X device can be used to detect the absence, presence, range, speed, position, and travel limit to enhance the overall efficiency of operations.

The Bulletin 803-B12X device by Allen Bradley is a Style “B” device of the standard 803 series of the rotating cam limit switches. Belonging to Type 1, 4 & 13 enclosures, the 803-B12X serves the purpose of 2 to 12 independent cam operators. These belong to the category of 10 Ampere snap action 1 N.O -1 N.C setup. The double throw, single-pole snap action contact has been rated for a 10 Amperes continuous current, ensuring a NEMA rating designation of A600. The 803-B12X offers around 150 RPM of maximum shaft speed with a cam duration of minimum 14 degrees and maximum 346 degrees. In a typical 803-B12X device, the device’s shaft extension will be on the left-hand side when viewed from the front. In addition, the installation process of the 803-B12X is relatively simple. This device comes with internal timing & dwell adjustments; to make the desired adjustment, first remove the cover, slacken the bolt, and then rotate the device’s cams until they are in the required rotating position. When the required adjustments have been made, the bolts can be tightened and the cover replaced. The internal dwell & timing adjustments must be made when the device is not in motion.