Belt sway switches, also known as conveyor belt alignment switches or run-off switches, are safety devices used in conveyor belt systems and material handling equipment to prevent the belt from misaligning or running off its intended path. These switches are crucial for maintaining safe and efficient conveyor operations, and they play a critical role in preventing conveyor belt damage and potential accidents. Here are the key features and functions of belt sway switches.

For normal running of the belt with acceptable swaying, the belt-sway switch is generally mounted on both sides and near the edge of the conveyor belt. A is generally mounted on the both sides and near the edge of the conveyor belt. A small clearance is allowed between contact roller and the belt edge to allow the normal running of the belt with acceptable swaying. When swaying exceeds normal limit, the belt edge pushes the contact roller, which drives the switch and operates the contacts.