803-A74WX

The Allen-Bradley 803-A74WX is a Type 4 and Type 13-enclosed Style A-rated rotating cam limit switch with 7 circuits present, as well as a double shaft extension and an external adjustment sprocket that lets the user modify the relative position between the shaft and the driving mechanism. A heavy-duty switch, it is ideally used for machines that feature repetitive operation cycles with the shaft rotation correlated to the general machine motion. When used properly, it has a long life expectancy and requires little maintenance. This switch is equipped with the standard features of a Style A switch, particularly 25 Amp. N. C. or normally closed double break contacts, a 150 RPM maximum shaft speed, and a 14 degrees minimum to 346 degrees maximum cam duration. Also, present on the 803-A74WX cam switch is internal dwell time and timing settings that can be configured when the machine is not in motion. It also has a spring-loaded cam-roller assembly that is mounted to the contact base. This switch can mount on any plane and it is capable of rotation in either direction.

The typical shaft torques of the 803-A74WX switch are 3 pounds on an inch when the cam roller rides on the lobe, 7 pounds on an inch when the cam roller rides up the cam ramp, and 0.5 pounds on an inch with the cam roller in the valley. Its non-operating temperature is from -30 to 93 degrees Celsius, while its operating temperature is -30 to 66 degrees Celsius. This switch has an approximate weight of 33 pounds or 15 kilograms.