The model BD-3 Belt Damage Detector switches are conveyor safety accessories designed to interlock with the conveyor shut down systems in the event of a damaged belt.  They are mounted in pairs, one on each side of the belt with the cables crossing in the middle.  In the event where something is sticking through the belt or a splice has failed it will come in contact with these cables pulling the ball out of the socket at the switch.  This will cause the red actuator arm to displace from its normal position tripping both micro switches inside.  One switch for shut down and the other for alarm annunciation.  This simple system will protect conveyor belts from costly repairs and downtime due to belt damage.  The BD-3 Belt Damage Detector can be ordered in standard, CE and CSA approved versions.  The CSA approved version is also approved for Class II, Div. 1 & 2, Groups E, F & G.