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Interlocks & Guard Switches

Interlocks and Guard Switches (Industrial Machine Safety Interlocking)

Interlocks and guard switches are critical components in industrial machine safety systems. These devices monitor the position of safety gates, guard doors, and protective barriers to ensure machinery operates only when safe conditions are met. When a guard is opened or removed, the interlock switch signals the safety circuit to stop machine motion and prevent hazardous operation.

Industrial interlocks are widely used in automated production lines, packaging equipment, robotic cells, conveyors, and assembly systems. Using the correct interlock series ensures compatibility with existing machine guarding hardware and helps maintain reliable safety performance in demanding industrial environments.

This category includes refurbished interlock switches and guard monitoring devices used for maintenance replacement and spare inventory. Maintaining compatible replacement hardware allows facilities to repair machines quickly and minimize production downtime.

Typical interlock applications

  • Safety gate monitoring for robotic cells
  • Guard door monitoring on packaging equipment
  • Access control for automated production lines
  • Protective enclosure monitoring for hazardous machinery
  • OEM machine safety integration

Shop by interlock series

Related categories

When replacing an interlock device, verify mounting orientation, actuator compatibility, electrical connections, and application requirements before installation to ensure the safety system functions correctly.

  • Allen-Bradley 440K-T11224 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11224 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11224Product Overview Allen-Bradley 440K-T11224 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $187.50
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  • Allen-Bradley 440K-T11216 440K Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440K-T11216 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11216Product Overview Allen-Bradley 440K-T11216 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $165.00
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  • Allen-Bradley 440K-T11215 440K Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440K-T11215 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11215Product Overview Allen-Bradley 440K-T11215 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $187.50
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  • Allen-Bradley 440K-T11214 440K Interlock
    In Stock

    Allen-Bradley

    Allen-Bradley 440K-T11214 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11214Product Overview Allen-Bradley 440K-T11214 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $175.50
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  • Allen-Bradley 440K-T11213B 440K Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440K-T11213B 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11213BProduct Overview Allen-Bradley 440K-T11213B is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $20.00
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  • Allen-Bradley 440K-T11213 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11213 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11213Product Overview Allen-Bradley 440K-T11213 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $20.00
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  • Allen-Bradley 440K-T11212 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11212 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11212Product Overview Allen-Bradley 440K-T11212 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $20.00
    Ask for Quote
  • Allen-Bradley 440K-T11211 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11211 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11211Product Overview Allen-Bradley 440K-T11211 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $172.50
    Ask for Quote
  • Allen-Bradley 440K-T11210 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11210 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11210Product Overview Allen-Bradley 440K-T11210 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $180.00
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  • Allen-Bradley 440K-T11209 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11209 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11209Product Overview Allen-Bradley 440K-T11209 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $172.50
    Ask for Quote
  • Allen-Bradley 440K-T11208 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11208 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11208Product Overview Allen-Bradley 440K-T11208 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $20.00
    Ask for Quote
  • Allen-Bradley 440K-T11207 440K Interlock

    Allen-Bradley

    Allen-Bradley 440K-T11207 440K Interlock (Refurbished)

    About Allen-Bradley 440K-T11207Product Overview Allen-Bradley 440K-T11207 is a refurbished 440K safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $210.00
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