This Allen Bradley product, the 803-B44RHRA, is a Rotating Cam Limit Switch. These products are offered in six different styles (in order to remain suitable for various applications); these styles are Style A, B, E, EF, F, and P. The 803-B44RHRA limit switch product is a Style B product specifically, as it has gone through the slight modifications of both group 1 and group 2. The 803-B44RHRA exhibits single pole double throw snap action contacts, which are rated for the 10A continuous current and four circuits.

This Style B device is equipped with 2 to 12 independent cam operators, while this particular device has four independent cam operators; this can be seen in the module’s part number. With a 150 RPM maximum shaft speed, the 803-B44RHRA is contained in Type 1, Type 4, and Type 13 enclosures. The Type 1 enclosure is a general-purpose enclosure, while the Types 4 and 13 are dust-tight, water-tight, and oil-tight industrial grade enclosures. The “RH” in this product’s catalog number signifies a modification only to the basic device selected from the Modification Group 1. Usually, a left shaft extension is present for the Style B version of this module. However, the modifications from the Group 1 turn it into a right-hand shaft extension; additionally, the 803-B44RHRA is modified for a variety of speed reducers, giving it a gear ratio of 40:1; this feature is signified by the “RA” at the end of this product’s catalog number. The Cam duration of the 803-B44RHRA product lies somewhere between 14 and 346 degrees and the 803-B44RHRA has both internal dwell and timing adjustment options. These internal dwell and timing adjustments must be made while the device is static.