The Model PS-3 Position Switch is utilized to monitor the position of heavy moving machinery. The roller actuator arm on the switch is design to make contact with moving machinery and once it is moved from its normal position two micro switches are tripped. These switches can be used to send an alarm to the control system or operator. It notifies the control system or operator that the machinery has hit its limit of travel so steps can be taken to stop the machinery or start the process. It basically operates as a heavy duty limit switch. For example PS-3 switches can be used to notify the control system or operator of the position of a tripper car, gravity take up or stacker conveyor. The are unlimited possibilities to use this switch in your operation. The PS-3 Position Switch can be ordered in standard and CSA approved versions. The CSA approved version is also approved for Class II, Div. 1 & 2, Groups E, F & G.