Skip Content

Please Upgrade Your Browser Grainger will no longer support Internet Explorer 8 as of 07/2018. Please upgrade your browser or contact your System Administrator for support.

Mechanical Interlock Devices

67 products found

Help ensure worker safety with electrical interlock devices from Grainger. Electrical interlocks are receptacles that allow the proper plug to be attached only when the power is disconnected and disable the plug from being removed while the power is on. Keep the workplace and your employees safe with electrical interlock receptacles from Grainger.Close

Filter Results By

Branch Availability
Item
Type
Voltage
Amps
Receptacle Type
Phase
Viewing Window
Fused / Nonfused
Number of Poles
Number of Wires
Brand
Price
Shop By

Viewing as

List
  • Watertight Mechanical Interlock Device, 480VAC Voltage, 100 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    4CT27
    Mfr. Model #
    HBL4100MI7W
    Watertight Mechanical Interlock Device, 480VAC Voltage, 100 Amps
    Web Price $1,596.00 / each
  • Watertight Mechanical Interlock Device, 480VAC Voltage, 60 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    3D160
    Mfr. Model #
    HBL460MIF7W
    Watertight Mechanical Interlock Device, 480VAC Voltage, 60 Amps,
    Web Price $1,925.00 / each
  • Watertight Mechanical Interlock Device, 480VAC Voltage, 60 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    6C582
    Mfr. Model #
    HBL460MI7W
    Watertight Mechanical Interlock Device, 480VAC Voltage, 60 Amps,
    Web Price $1,446.00 / each
  • Watertight Mechanical Interlock Device, 480VAC Voltage, 30 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    6C573
    Mfr. Model #
    HBL430MI7W
    Watertight Mechanical Interlock Device, 480VAC Voltage, 30 Amps,
    Web Price $1,120.36 / each
  • Mechanical Interlock Device, 480VAC Voltage, 20 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    1TJZ3
    Mfr. Model #
    HBL420MI7W
    Mechanical Interlock Device, 480VAC Voltage, 20 Amps, Number
    Web Price $897.26 / each
  • Watertight Mechanical Interlock Device, 250VAC Voltage, 30 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    6C574
    Mfr. Model #
    HBL430MI9W
    Watertight Mechanical Interlock Device, 250VAC Voltage, 30 Amps,
    Web Price $1,061.53 / each
  • Watertight Mechanical Interlock Device, 480VAC Voltage, 30 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    3D147
    Mfr. Model #
    HBL430MIF7W
    Watertight Mechanical Interlock Device, 480VAC Voltage, 30 Amps,
    Web Price $1,869.53 / each
  • Watertight Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    6C572
    Mfr. Model #
    HBL430MI5W
    Watertight Mechanical Interlock Device, 600VAC Voltage, 30 Amps,
    Web Price $1,129.00 / each
  • Mechanical Interlock Device, 480VAC Voltage, 30 Amps, Number of Poles: 4

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    21XL25
    Mfr. Model #
    HBL530MI7W
    Mechanical Interlock Device, 480VAC Voltage, 30 Amps, Number
    Web Price $1,195.00 / each
  • Mechanical Interlock Device, 250VAC Voltage, 20 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    1TJZ4
    Mfr. Model #
    HBL420MI9W
    Mechanical Interlock Device, 250VAC Voltage, 20 Amps, Number
    Web Price $901.34 / each
  • Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y477
    Mfr. Model #
    WSRD63542
    Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number
    Web Price $2,026.00 / each
  • Mechanical Interlock Device, 600VAC/250VDC Voltage, 60 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    1TKA1
    Mfr. Model #
    HBL460MIS2W
    Mechanical Interlock Device, 600VAC/250VDC Voltage, 60 Amps,
    Web Price $1,528.00 / each
  • Mechanical Interlock Device, 600VAC/250VDC Voltage, 60 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    1TJZ8
    Mfr. Model #
    HBL460MIFS2W
    Mechanical Interlock Device, 600VAC/250VDC Voltage, 60 Amps,
    Web Price $1,920.00 / each
  • Mechanical Interlock Device, 120/240VAC Voltage, 100 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    21XL19
    Mfr. Model #
    HBL4100MI12W
    Mechanical Interlock Device, 120/240VAC Voltage, 100 Amps,
    Web Price $1,703.00 / each
  • Mechanical Interlock Device, 250VAC Voltage, 100 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    2EAU8
    Mfr. Model #
    HBL4100MI9W
    Mechanical Interlock Device, 250VAC Voltage, 100 Amps, Number&#x
    Web Price $1,620.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    21XL20
    Mfr. Model #
    HBL4100MI5W
    Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number&#x
    Web Price $1,820.00 / each
  • Mechanical Interlock Device, 600VAC/250VDC Voltage, 30 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    1TJZ9
    Mfr. Model #
    HBL430MIS2W
    Mechanical Interlock Device, 600VAC/250VDC Voltage, 30 Amps,
    Web Price $1,047.00 / each
  • Mechanical Interlock Device, 480VAC Voltage, 60 Amps, Number of Poles: 2

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    3D722
    Mfr. Model #
    HBL360MI7W
    Mechanical Interlock Device, 480VAC Voltage, 60 Amps, Number
    Web Price $1,422.00 / each
  • Mechanical Interlock Device, 250VAC Voltage, 100 Amps, Number of Poles: 4

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    21XL24
    Mfr. Model #
    HBL5100MI9W
    Mechanical Interlock Device, 250VAC Voltage, 100 Amps, Number&#x
    Web Price $1,892.00 / each
  • Mechanical Interlock Device, 120/240VAC Voltage, 60 Amps, Number of Poles: 3

    Brand
    HUBBELL WIRING DEVICE-KELLEMS
    Item #
    21XL22
    Mfr. Model #
    HBL460MI12W
    Mechanical Interlock Device, 120/240VAC Voltage, 60 Amps, N
    Web Price $1,469.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y472
    Mfr. Model #
    WSRD6352
    Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number
    Web Price $2,107.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y454
    Mfr. Model #
    WSR33542
    Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number
    Web Price $3,668.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y459
    Mfr. Model #
    WSRD10352WSQ
    Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number&#x
    Web Price $3,266.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y455
    Mfr. Model #
    WSR6352
    Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number
    Web Price $4,276.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number of Poles: 3

    Brand
    HUBBELL KILLARK
    Item #
    2NVY8
    Mfr. Model #
    VWSQ3023
    Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number
    Web Price $1,340.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y453
    Mfr. Model #
    WSR3352
    Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number
    Web Price $3,865.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y458
    Mfr. Model #
    WSRD10352SQ
    Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number&#x
    Web Price $3,278.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number of Poles: 4

    Brand
    HUBBELL KILLARK
    Item #
    2NVZ2
    Mfr. Model #
    VWSQ6034
    Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number
    Web Price $1,550.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y452
    Mfr. Model #
    WSR10352
    Mechanical Interlock Device, 600VAC Voltage, 100 Amps, Number&#x
    Web Price $7,843.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number of Poles: 3

    Brand
    HUBBELL KILLARK
    Item #
    2NVZ1
    Mfr. Model #
    VWSQ6023
    Mechanical Interlock Device, 600VAC Voltage, 60 Amps, Number
    Web Price $1,524.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number of Poles: 4

    Brand
    HUBBELL KILLARK
    Item #
    2NVY9
    Mfr. Model #
    VWSQ3034
    Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number
    Web Price $1,371.00 / each
  • Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number of Poles: 4

    Brand
    APPLETON ELECTRIC
    Item #
    11Y471
    Mfr. Model #
    WSRD33542WSQ
    Mechanical Interlock Device, 600VAC Voltage, 30 Amps, Number
    Web Price $2,170.00 / each
View More
Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More