The Definition of Trapped Key Interlocking

“A means of ‘Physical Insurance' that is employed by industry to guard against operator error. It is a simple sequencing of events using a system of key transference, to ensure personnel safety”.  

Trapped Key Interlocks are mechanical or electro-mechanical devices that are used to ensure the safe operation of plant and equipment in a predetermined fashion. Teksal Controls is your specialist local supplier of Fortress, Castell and Ronis interlocks.  

Typical applications of trapped key interlocks include:

• Machine Guarding – manufacturing, mining, utilities, oil & gas, robotics
• Isolation & Access Control – ensures isolations are complete before allowing personnel access
• Switchgear interlocking and HV switching – helps minimize risks in complicated distribution systems

For examples of typical applications, please visit our applications page.

To download datasheets for the latest “CL” style Fortress Interlocks, click here .