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440P Interlocks

Allen-Bradley 440P Safety Limit Switches

Allen-Bradley 440P safety limit switches are mechanical safety devices used to monitor machine guard positions and control access to hazardous equipment. These switches are commonly installed on protective machine enclosures and access doors to ensure machinery operates only when guards are properly positioned.

Mechanical safety limit switches are widely used across industrial automation systems because of their simple design, reliability, and compatibility with many machine safety circuits. The 440P series is frequently found on manufacturing equipment, conveyor systems, and assembly machinery.

This category includes refurbished Allen-Bradley 440P safety switches used for maintenance replacement and spare parts inventory. Keeping compatible replacement safety components available helps facilities minimize downtime and maintain safe machine operation.

Common 440P applications

  • Mechanical guard door monitoring
  • Industrial conveyor safety systems
  • Machine enclosure safety monitoring
  • Packaging equipment safety switches
  • OEM machine guarding systems

Related categories

When replacing a safety limit switch, confirm actuator style, mounting dimensions, and electrical ratings to ensure compatibility with the machine safety circuit.

  • Allen-Bradley 440P-SCM22 440P Interlock (Refurbished)
    In Stock

    Allen-Bradley

    Allen-Bradley 440P-SCM22 440P Interlock (Refurbished)

    About Allen-Bradley 440P-SCM22Product Overview Allen-Bradley 440P-SCM22 is a refurbished 440P 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 440P-SCM11 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440P-SCM11 440P Interlock (Refurbished)

    About Allen-Bradley 440P-SCM11Product Overview Allen-Bradley 440P-SCM11 is a refurbished 440P 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 440P-SCI37 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440P-SCI37 440P Interlock (Refurbished)

    About Allen-Bradley 440P-SCI37Product Overview Allen-Bradley 440P-SCI37 is a refurbished 440P 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 440PSCI27 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440PSCI27 440P Interlock (Refurbished)

    About Allen-Bradley 440PSCI27Product Overview Allen-Bradley 440PSCI27 is a refurbished 440P safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring doors,...

    $97.50
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  • Allen-Bradley 440PSCI24 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440PSCI24 440P Interlock (Refurbished)

    About Allen-Bradley 440PSCI24Product Overview Allen-Bradley 440PSCI24 is a refurbished 440P safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring doors,...

    $97.50
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  • Allen-Bradley 440P-SCI17 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440P-SCI17 440P Interlock (Refurbished)

    About Allen-Bradley 440P-SCI17Product Overview Allen-Bradley 440P-SCI17 is a refurbished 440P 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 440P-SCI16 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440P-SCI16 440P Interlock (Refurbished)

    About Allen-Bradley 440P-SCI16Product Overview Allen-Bradley 440P-SCI16 is a refurbished 440P safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring...

    $120.00
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  • Allen-Bradley 440P-SCI14 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440P-SCI14 440P Interlock (Refurbished)

    About Allen-Bradley 440P-SCI14Product Overview Allen-Bradley 440P-SCI14 is a refurbished 440P 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 440P-SC127 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440P-SC127 440P Interlock (Refurbished)

    About Allen-Bradley 440P-SC127Product Overview Allen-Bradley 440P-SC127 is a refurbished 440P 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 440P-NX9 440P Interlock

    Allen-Bradley

    Allen-Bradley 440P-NX9 440P Interlock (Refurbished)

    About Allen-Bradley 440P-NX9Product Overview Allen-Bradley 440P-NX9 is a refurbished 440P safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring doors,...

    $232.50
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  • Allen-Bradley 440P-NX8 440P Interlock (Refurbished)

    Allen-Bradley

    Allen-Bradley 440P-NX8 440P Interlock (Refurbished)

    About Allen-Bradley 440P-NX8Product Overview Allen-Bradley 440P-NX8 is a refurbished 440P safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring doors,...

    $165.00
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  • Allen-Bradley 440P-NX7 440P Interlock

    Allen-Bradley

    Allen-Bradley 440P-NX7 440P Interlock (Refurbished)

    About Allen-Bradley 440P-NX7Product Overview Allen-Bradley 440P-NX7 is a refurbished 440P safety interlock designed for industrial machine guarding and access control. It is commonly used to help prevent access to hazardous motion by monitoring doors,...

    $165.00
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