Best Electrical Plug Lockout Device Guide for Safer Worksites and Homes
If you need a reliable plug lockout device, you’re looking for a safety tool that prevents accidental energizing of equipment during maintenance or repair. This guide covers five top options suited for a variety of plugs (2-prong, 3-prong, and larger industrial configurations). It highlights who each product is best for, how they work, and practical cautions to help you choose confidently. The following table summarizes the key picks and their ideal use cases to speed your decision.
| Product | Best For | Key Benefit | Notes |
|---|---|---|---|
| QWORK Electrical Cord Plug Lockout Device (2-Pack) | Small shops and DIYers | Keyed different locks for two plugs | Includes 4 keys; key-retaining feature |
| 7397 Electrical Plug Lockout Device | General maintenance techs | Simple slide-on design for 2–3 prong plugs | Includes 1 device and 2 keys |
| Plug Locks for Power Cords (BoZZYS) | Industrial or multi-scene use | Self-locking with no padlock; three sizes | High-temp tolerance; OSHA-aligned |
| TRADESAFE Lockout Tagout Plug Lock | Industrial environments | Compact, rugged construction for cords | Two cord holes; red labeling |
| TRADESAFE Plug Lock for 220V | High-voltage or large equipment | Large plug lockout with up to 2 plugs | Durable polypropylene; OSHA-aligned |
QWORK Electrical Cord Plug Lockout Device (2-Pack)
The QWORK lockout set is designed for two-prong plugs, including polarized and non-polarized plugs, with or without ground. It is made from insulated ABS, offering heat, wear, and impact resistance. The kit includes two lockout devices and four keys, each keyed differently to reduce cross-access. This makes it well-suited for shared workspaces where multiple technicians require independent lockout control. A key-retaining safety feature helps ensure the plug remains securely locked when not in use.
Best for: small workshops and maintenance tasks where two different users operate adjacent equipment. The keyed-different design helps avoid key reuse and confusion. If you need separate control for two separate circuits, this set is a practical choice. A potential limitation is that it only fits two-prong plugs; for larger industrial gear, another option may be preferable.
7397 Electrical Plug Lockout Device
The 7397 lockout device is a straightforward option that fits standard 2- and 3-pronged American plugs. It includes one device and two keys, with packaging indicating item number #7397. Its simple-to-use design makes it a reliable choice for a broad range of applications where the primary goal is preventing accidental operation. The device slides over the plug and grips snugly for compliance with basic safety protocols.
Best for: technicians who want a straightforward, widely compatible lockout without extra complexity. It’s a good fit for facilities that operate primarily with standard household and light industrial plugs. A possible limitation is that it provides a single device per purchase, so larger teams may require multiple units to cover more circuits concurrently.
Plug Locks for Power Cords with Keys (BoZZYS)
BoZZYS offers a self-locking, no-padlock plug lockout with three size options (S, M, L) to fit a wide range of household and industrial plugs. The design emphasizes a built-in buckle locking mechanism that completes closure without requiring a separate padlock, saving time and reducing the risk of losing keys. Constructed from high-strength engineering plastics, it withstands harsh environments and temperature ranges from -20°C to 120°C. It has passed extensive plug-in and pull-out testing and aligns with OSHA 1910.148 standards for industrial safety.
Best for: facilities needing quick, padlock-free locking across multiple cord sizes. It’s especially suitable for environments where speed and reliability are prioritized, and where color-coding can help with quick identification. A caveat is that the device’s effectiveness relies on its proper size selection for the plug; choosing the wrong size can compromise safety.
TRADESAFE Lockout Tagout Plug Lock
The TRADESAFE Lockout Tagout Plug Lock is designed for 110–125 Volt plugs and offers a compact, durable build. It features two cord holes and a hexagonal body with two LOTO lock holes. The kit includes red lockout covers with a “Danger Locked Out Do Not Operate” label, which helps operators identify locked circuits quickly. This option is well-suited to environments where tight control over multiple cords is essential and where clear labeling enhances safety compliance.
Best for: industrial settings requiring a robust, dual-hole locking mechanism with clear danger labeling. It is a solid choice for teams that lock out several small to medium-diameter cords. A limitation is that it is sized for standard 110–125 V use, so high- or variable-voltage applications may necessitate other equipment or sizes.
TRADESAFE Plug Lock for 220 Volt
This larger TRADESAFE plug lockout is designed for 220-volt power cords and can secure up to two plugs at once. It emphasizes industrial-grade rigidity with non-conductive polypropylene, capable of withstanding heavy use and tampering. The included red lockout cover carries a “Danger Locked Out Do Not Remove” label and a hexagon body design, featuring four LOTO lock holes for versatility in multi-cord applications. It’s ideal for high-demand environments with larger plugs and higher voltage safety needs.
Best for: high-voltage or larger equipment lockouts where multiple plugs must be secured simultaneously. Choose this if you need a rugged, scalable solution for industrial electrical systems. A potential drawback is its larger size, which may not be ideal for compact setups or home-use scenarios.
Buying Guide: How to Pick the Right Plug Lockout Device
What plug type do you mainly lock out? Most devices fit standard American 2- or 3-prong plugs, but some options extend to larger industrial plugs. Measure plug diameter and check the number of lock holes the device provides to determine compatibility with multiple cords.
Do you need keys, or is a padlock unnecessary? Some models are keyed-different or include multiple keys, which helps prevent cross-access. If you work in a shared space, a keyed system or a padlock-compatible design may be preferable to avoid mix-ups.
Will you operate in harsh environments? Look for high-temperature plastics or other durable materials if you expect exposure to heat, chemicals, or extreme temperatures. Ensure the device meets relevant safety standards such as OSHA alignment for industrial use.
Is quick deployment important? Self-locking designs without separate padlocks can save time and reduce key management overhead. If your operation prioritizes speed, this can be a meaningful benefit.
How many circuits need coverage? For multi-cord or multi-plug operations, select a device with multiple lock holes or accommodate more than one plug to maximize efficiency and safety.
Frequently Asked Questions
- What is a plug lockout device? It is a safety device used to physically prevent the energization of electrical plugs during maintenance or repair, often including a lockout cover and keys or a padlock.
- Who should use plug lockout devices? Technicians, maintenance crews, and facilities managers who work with electrical equipment and need to prevent accidental startup.
- Do these devices work with all plug types? Most are designed for standard 2- and 3-prong American plugs; some models also support larger or 220-volt plugs. Check compatibility before purchase.
- Are lockout devices compliant with safety standards? Many products advertise OSHA-aligned or industrial-safety compatibility; verify the specific model’s certifications if needed for your site.
- Should I buy multiple devices? If your workspace has several active circuits, purchasing a multi-pack or devices with multiple lock holes can reduce setup time and increase safety.
- Can lockout devices be reused? Most are reusable after removing the lockout, but keys or padlocks may need to be retained securely to avoid loss.