AutomationDirect: SSP Safety Enabling Switches
AutomationDirect has added SSP safety enabling switches, also known as “hold-to-run” or “dead man’s” switches. When used in conjunction with a properly designed safety system, they provide the operator with a special control mode for tasks such as maintenance or debugging of hazardous equipment. These switches consist of a spring-return three-position (N.O.-N.C.-N.O.) grip button that must be maintained by the operator in the middle position for the machinery to continue operating.