803-A12RH

The Allen-Bradley 803-A12RH rotating cam limit switch has 12 available circuits and it has a right-hand shaft extension instead of the standard left-hand shaft extension. It also comes with 25A-rated N. C. or normally closed double break contacts, with a 150 RPM maximum shaft speed, and with a 14-degree minimum to 346-degree maximum cam duration, all of which are all characteristic of Allen-Bradley’s 803 series of Style A switches. It also features internal dwell adjustments and timing adjustments that the user can only set when the device is powered off and not moving, and it has a spring-loaded cam-roller assembly that is mounted on the contact base. The 803-A12RH switch can be mounted on any plane and it is capable of rotating in either the clockwise and the counterclockwise direction. These rotating switches are used for machines with repetitive operation cycles wherein their motion and shaft rotation are directly correlated. The Allen-Bradley 803-A12RH cam limit switch is capable of heavy-duty operation and it will last for a long time. With a Type 1 enclosure, the 803-A12RH switch has an operating temperature range between -30 and 66 degrees Celsius and a non-operating temperature range between -30 and 93  degrees Celsius. The 803-A12RH also has typical shaft torques of 3 lb-in when the cam roller rides on its lobe, of 7 pounds on an inch when the cam roller rides up the cam ramp, and of 0.5 pounds on an inch with the cam roller is in the valley. The estimated weight of this switch is 20.4 kilograms or 45 pounds.