The 803-B94X is part of Allen Bradley’s Rotating Cam Limit Switch series, which are designed for heavy and rugged applications.  The 803-B94X is from the Style “B” product line, and as such has internal timing and dwell adjustments which can only be carried out while the equipment is stationary.  It has a Type 4 & 13 enclosure, 1 N.O. – 1 N.C. snap contacts, and has 9 circuits. Its snap action contacts are single pole double throw and have a continuous current rating of 10 Amps.  With 2 to 12 autonomous cam operators and a standard left shaft extension, the 803-B94X has a shaft speed of 150 Revolutions Per Minutes (RPM) at its peak.  The cam duration ranges from a minimum of 14 degrees to a maximum of 346 degrees. However, the 803-B94X is modified to have a double shaft extension. The cam mounting plate has angular degree scales on the shaft that facilitates easy setting.

By starting functions at designated points in a machine’s operation cycle, this Condition Sensing device is able to detect a rotating machine’s movements. The 803-B94X is designed to automate machine processes and operations.  Its condition sensors are capable of providing control intelligence at significant values and communicating that information as a signal to operators for manual control or to sequence equipment automatically.  When applied as prescribed, its pristine and remarkable materials and construction ensure that it requires little maintenance, leading to impressive savings in operational costs, protecting high-value equipment, ensuring operators’ security and increasing operating hours. The 803-B94X can be applied in a wide variety of applications, from punch presses to Watergate and lock operations, packing machines, injection molding machines, and assembly machines.