The Allen-Bradley 803-A124 switch is a rotating cam limit switch that has 12 available circuits. The switch is also equipped with a spring-loaded cam-roller assembly that is mounted on its contact base, and it comes with internal dwell time and timing adjustments. Note that adjustments to the internal dwell time and the timing can only be done when the device is at a standstill. The 803-A124 switch is typically used for machines that need a repetitive cycle of operation where the mechanical motion is correlated with the shaft’s rotation. This switch is also ideal for heavy-duty use and it will last for a long time. The Allen-Bradley 803-A124 switch is a Style A switch, so it also comes with a 150 RPM maximum shaft speed, a minimum cam duration of 14Ëš and a maximum duration of 346 degrees, 25-Amp. N. C. (normally-closed) double break contacts and a standard left shaft extension. Its operating temperature range is -30 to 66 degrees Celsius, while its non-operating temperature range is -30 to 93 degrees Celsius. Mountable on any plane and mountable in Type 4 and Type 13 enclosure ratings, Allen-Bradley 803-series switches like the 803-A124 switch have the capacity to rotate in either direction. They also have typical shaft torques per cam of 0.5 pounds on an inch with the cam roller in the valley, 7 lb-in when the cam roller rides up the cam ramp, and 3 lb-in when the cam roller rides on the lobe. The 803-A124 switch weighs approximately 45 pounds or 20.4 kilograms.