Best Electrical Plug Lockout Devices for Safe Lockout Tagout
When working with electrical systems, proper lockout tagout (LOTO) devices are essential to prevent accidental energization. This guide highlights reliable plug lockout devices designed for 110–220V plugs, focusing on industrial-grade construction, ease of use, and compliance with safety standards. The selections below cover a range of sizes and configurations to fit most common plugs and cords in industrial and workshop environments.
| Product | Brand | Key Features |
|---|---|---|
| WUWEOT 3 Pack Plug Lock | WUWEOT | Up to 6 1/2″ length, 3″ diameter plugs; two locking holes; durable nonconductive polypropylene |
| TRADESAFE Lockout Tagout Plug Lock | TRADESAFE | 1-3/4″ diameter plugs, two holes; durable; DIN style hexagon body |
| TRADESAFE Plug Lock (220V) | TRADESAFE | Up to 3″ diameter; two holes; includes “Danger Locked Out Do Not Remove” label |
| RealPlus Plug Lock | RealPlus | Up to 4-3/8″ length, 2-1/8″ diameter; two holes; industrial-grade |
| Jucoan 2 Pack Electrical Lockout | Jucoan | 3″ x 2.25″ cavity; two padlocks; fits most plugs; includes 2 keys each |
Note: All products listed are designed to secure electrical plugs against accidental energization, supporting safer maintenance and repair work in industrial and commercial settings.
WUWEOT 3 Pack Plug Lockout

The WUWEOT plug lockout device is designed for industrial use, offering a hexagon body and two 1-inch cord holes. It secures plugs up to 6 1/2 inches long and 3 inches in diameter and supports locking up to two plugs at once. Made from nonconductive polypropylene, it resists tampering and harsh environments, helping to prevent accidental energization during maintenance. The included red lockout locks bear the label “Danger Locked Out Do Not Remove.”
TRADESAFE Lockout Tagout Plug Lock

This precision-engineered device secures plugs up to 1-3/4 inch in diameter and features two cord holes of 1/2 inch. It isolates hazardous energy and prevents unauthorized access. Constructed from rugged, nonconductive polypropylene, it is built for heavy industrial use and includes two red plug locks with a “Danger Locked Out Do Not Operate” label, plus a hexagon body design and four LOTO lock holes (5/16 inch).
TRADESAFE 220V Plug Lockout

Designed for larger plug profiles, this TRADESAFE device fits up to a 3-inch diameter and provides two lock holes at 1 inch each. It locks out up to two plugs simultaneously and uses industrial-grade polypropylene for resilience in demanding environments. The kit includes a red plug cover with a visible danger label and a hexagon body, plus four lock holes (5/16 inch).
TRADESAFE Lockout Tagout Electric Plug Lock

This large, 2-plug lockout device supports plugs up to 3 inches in diameter with two 1-inch cord holes. It is built to withstand heavy industrial use and includes a red cover with the “Danger Locked Out Do Not Remove” label, a rugged hexagon body, and four LOTO lock holes (5/16 inch). The durable polypropylene construction provides reliable insulation and tamper resistance.
RealPlus Plug Lock

RealPlus offers an industrial-grade lockout device with two padlock holes sized at 11/32 inch. It secures plugs up to 4-3/8 inches long and 2-1/8 inches in diameter, with a durable nonconductive polypropylene body and a bold “Danger Locked Out Do Not Operate” label on the hexagonal design.
Jucoan 2 Pack Electrical Lockout

Jucoan’s 2-pack provides a compact plug lockout solution suitable for 110V and 220V plugs. Each unit includes two safety padlocks with two keys, and a simple three-step operation: insert the plug, close the device, and secure with a padlock. The cavity measures 3″ length by 2.25″ diameter and fits most standard plugs under this size, with an emphasis on portability for home and factory use.
Buying Guide: Key Purchase Considerations
- Plug size compatibility: Verify maximum plug diameter and length to ensure a proper fit for your equipment and cords. Larger plugs require bigger lockouts with dual holes.
- Locking capacity: If you need to secure multiple plugs at once, choose devices with 2 or more locking holes to prevent accidental energization across multiple lines.
- Material and durability: Look for nonconductive polypropylene or similar rugged plastics rated for industrial environments and resistant to chemicals, heat, and tampering.
- Labeling and visibility: A clearly labeled “Danger Locked Out Do Not Remove” tag improves compliance and safety awareness among workers.
- Ease of use: Consider devices with simple insertion and locking procedures and compatible with common padlock sizes used in your facility.
- Compliance and standards: Ensure devices meet OSHA lockout/tagout guidelines and are compatible with your company’s LOTO program.
When selecting a plug lockout device, balance size, durability, and ease of use with the specific energy sources in your operation. For facilities with frequent maintenance across multiple machines, a multi-plug solution can streamline compliance. For smaller workshops, compact options with quick-lock features may be preferable.