Electrical Plug Lockout
2 sizes to choose from
- Item #:
- C3104-487, C3105-488
- Electrical Plug Lockout Reads:
- Danger Do Not Remove (English and Spanish Labels)
- Compliance:
-
- OSHA
Other configurations of this product

Master Lock Part# 487, 488. The electrical plug lockout is available in two sizes. The smaller size is designed for 110 and 220 volt plugs and accepts cords with up to a 3/4" (19 mm) diameter and an electrical plug up to 2-1/4" (57 mm) diameter x 3-1/4" (83 mm) in length. The larger size is designed for 220-550 volt plugs and accepts cords with up to 3/4" (19 mm) diameter and an electrical plug up to 3" (76mm) diameter x 6" (152 mm) in length. This plug lockout device works by surrounding the electrical plug and protecting against unwanted or accidental reconnection. The rotating design allows for easier installation in confined space applications and it comes with a high visibility safety label to remind others not to try and remove the device.
Danger Do Not Remove (English and Spanish Labels)
For Up to ¾″ Diameter Cords and 3¼″ Long Plugs
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Material | Sku | Quantity/Price | |||
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Zenex™ Thermoplastic | C3104-487 | $14.00 | $13.45 | $12.90 |
For Up to ¾″ Diameter Cords and 6″ Long Plugs
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Material | Sku | Quantity/Price | |||
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Zenex™ Thermoplastic | C3105-488 | $14.75 | $14.15 | $13.60 |
Special Freight Arrangement:
Due to the size of this product, freight shipping will be required. You may contact our customer service team for a quote or you can place your order and a customer service representative will contact you about freight shipping charges.
If you would like to use your own freight carrier, please include your freight carrier account in the special instructions box at the bottom of the checkout page before placing your order. A customer service representative will be in contact with you if there are any questions.
Phone: 800-274-6271
Fax: 800-279-6897
Phone: 800-274-6271
Fax: 800-279-6897
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Master Lock Electrical Plug Lockout
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SafetySign Part#: | C3104 | C3105 | |
Master Lock Part#: | 487 | 488 | |
Fits Plug Type: | 110 Volt Plugs | 240 – 600 Volt Plugs | |
Fits Plug Size: | 2¼″ diameter × 3¼″ length (57mm × 82mm) |
3″ diameter × 6″ length (76mm × 152mm) |
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Fits Cord Size: | Up to ¾″ (19mm) | ||
Max. Number of Padlocks or Hasps: | 1 padlock or hasp | ||
Max. Padlock Shackle Diameter: | 9/32″ (7mm) | ||
Material: | Zenex™ Thermoplastic body that withstands chemicals and performs effectively in extreme conditions | ||
Benefits: | Surrounds the electrical plug and protects against accidental reconnection | ||
Outward/inward rotation allows for easier application and storage | |||
Complete with high visibility permanent safety labels (English & Spanish) | |||
Lockout Function: | Surrounds the electrical plug and protects against accidental reconnection | ||
OSHA 1910.147(b) Compliance: | Capable of being locked out. An energy isolating device is capable of being locked out if it has a hasp or other means of attachment to which, or through which, a lock can be affixed, or it has a locking mechanism built into it. Other energy isolating devices are capable of being locked out, if lockout can be achieved without the need to dismantle, rebuild, or replace the energy isolating device or permanently alter its energy control capability. | ||
Application: | ![]() |
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PDF Instructions: | Download Instructions |