What Are Safety Interlocks?

Safety interlock switches are used as interlock devices that can prevent machine operation or startup in an unsafe situation, such as when a door or guard is open. Interlock devices with a locking function can also prevent doors or guards from being opened while the machine is in operation.

How does a safety interlock work?

Noncontact safety interlock switches work by coupling a moveable door guard with the power source of the hazard. In most applications an interlock is a device used to help prevent a machine from harming its operator or damaging itself by stopping the machine when tripped.

What is a safety interlock example?

Interlock Examples

Examples of consumer products incorporating interlocks are: Removal of a guard on a food processor prevents the operation of the motor and blade, thereby reducing the opportunity for spinning blade injury (example of guard).