In Stock Industrial Automation Parts   |   Fast Shipping Across USA

Control Relays

Control Relays for Industrial Automation

Control relays are used in industrial automation systems for switching, interlocks, signaling, and auxiliary control functions. They are commonly installed in control panels, OEM machinery, and industrial equipment where dependable logic switching and control circuit isolation are required.

Different control relay families support different contact arrangements, coil voltages, socket styles, and mounting methods. Organizing relays by series helps maintenance teams and engineers locate compatible replacements quickly and maintain consistency with installed panel designs. Whether you are replacing a failed relay or building out spare inventory, matching the correct relay family is important for reliable operation and easier maintenance.

Common applications

  • Interlocks and control circuit logic
  • Status signaling and pilot circuits
  • OEM machinery and industrial control panels
  • Auxiliary switching and interface functions
  • Maintenance replacement and spare inventory planning

Control relay families

Related categories

If you need help selecting the correct relay, confirm your coil voltage, contact arrangement, socket or mounting style, and any indicator or test-button requirements before installation.

  • Allen-Bradley 700-RM530A1 700R Control Relay New Surplus
    In Stock

    Allen-Bradley

    Allen-Bradley 700-RM530A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM530A1Product Overview Allen-Bradley 700-RM530A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $2,808.00
    Buy Now
  • Allen-Bradley 700-RM500A1 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-RM500A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM500A1Product Overview Allen-Bradley 700-RM500A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,625.00
    Ask for Quote
  • Allen-Bradley 700-RM440A2 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-RM440A2 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM440A2Product Overview Allen-Bradley 700-RM440A2 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $2,015.00
    Ask for Quote
  • Allen-Bradley 700-RM440A1 700R Control Relay New Surplus
    In Stock

    Allen-Bradley

    Allen-Bradley 700-RM440A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM440A1Product Overview Allen-Bradley 700-RM440A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,033.41
    Buy Now
  • Allen-Bradley 700-RM421A1 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-RM421A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM421A1Product Overview Allen-Bradley 700-RM421A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,885.00
    Ask for Quote
  • Allen-Bradley 700-RM420A1 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-RM420A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM420A1Product Overview Allen-Bradley 700-RM420A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,755.00
    Ask for Quote
  • Allen-Bradley 700-RM410A1 700R Control Relay New Surplus
    In Stock

    Allen-Bradley

    Allen-Bradley 700-RM410A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM410A1Product Overview Allen-Bradley 700-RM410A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,984.00
    Buy Now
  • Allen-Bradley 700-RM400A24 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-RM400A24 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM400A24Product Overview Allen-Bradley 700-RM400A24 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,495.00
    Ask for Quote
  • Allen-Bradley 700-RM400A2 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-RM400A2 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM400A2Product Overview Allen-Bradley 700-RM400A2 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,625.00
    Ask for Quote
  • Allen-Bradley 700-RM400A1 700R Control Relay New Surplus
    In Stock

    Allen-Bradley

    Allen-Bradley 700-RM400A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM400A1Product Overview Allen-Bradley 700-RM400A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $332.44
    Buy Now
  • Allen-Bradley 700-RM340A1 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-RM340A1 700R Control Relay (New Surplus)

    About Allen-Bradley 700-RM340A1Product Overview Allen-Bradley 700-RM340A1 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,950.00
    Ask for Quote
  • Allen-Bradley 700-rm330a2 700R Control Relay New Surplus

    Allen-Bradley

    Allen-Bradley 700-rm330a2 700R Control Relay (New Surplus)

    About Allen-Bradley 700-rm330a2Product Overview Allen-Bradley 700-rm330a2 is a 700R control relay used for switching and control functions in industrial automation systems. Control relays are commonly installed in control panels and OEM equipment for...

    $1,755.00
    Ask for Quote
Compare Selected