Best Plug Locks for Electrical Plugs
Keeping electrical equipment safe often requires locking out power sources during maintenance or on job sites. The following plug lockout devices are designed to secure 2- and 3-prong plugs, preventing accidental energization and meeting common safety standards. This guide highlights five top options, compares key features, and offers practical buying tips for homes, offices, and industrial environments.
| Product | Brand | Type |
|---|---|---|
| QWORK Electrical Cord Plug Lockout Device (2 Pack) | QWORK | Keyed-different lockout devices |
| TRADESAFE Lockout Tagout Plug Lock (2 Pack) | TRADESAFE | Industrial-grade lockouts |
| BOZZYS Plug Lock for Cords (2 Pack) | BOZZYS | OSHA-compliant key-retaining |
| AuRandoo 2PCS Plug Lockout Devices (2 Pack) | AuRandoo | Keyed-different lockouts |
| LOCK SOCKET Adjustable Outlet Lock | LOCK SOCKET | Adjustable universal lock |
QWORK Electrical Cord Plug Lockout Device (2 Pack)
QWORK offers durable ABS plastic lock bodies designed to insulate and resist wear, heat, and impact. The kit includes two identical devices with four keys, allowing different lockouts on shared circuits. A key-retaining safety feature helps prevent accidental removal of keys, ensuring that once a plug is locked, it remains secure until the authorized operator unlocks it. The device works with both polarized and non-polarized 2-prong plugs, as well as 3-prong configurations, making it a versatile option for various electrical shutdown scenarios. This setup supports quick installation and straightforward compliance during lockout/tagout procedures.
TRADESAFE Lockout Tagout Plug Lock
TRADESAFE’s lockout device is designed for high-traffic environments, with precision engineering that secures plugs up to 1-3/4 inches in diameter. It features two cord holes and a rugged, nonconductive polypropylene body that resists tampering and heavy use. The kit includes two red lockout plugs with a “Danger Locked Out Do Not Operate” label and a hexagon body design. The design emphasizes safety and reliability for industrial settings, helping to isolate hazardous energy and allow authorized personnel to control access during maintenance or outages. This option suits facilities seeking robust, easy-to-use lockouts with clear visual cues.
BOZZYS Plug Lock for Cords
BOZZYS combines industrial-grade materials with OSHA-compliant safety features. Constructed from impact-resistant ABS+PC plastic, these locks withstand temperatures from -30°C to 100°C, making them suitable for harsh environments. A key-retention function ensures that the plug cannot be unlocked until the key is engaged, reducing the risk of misplacing keys during shutdowns. The device installs quickly—no tools required—by sliding onto common 2- or 3-prong plugs, providing immediate visual confirmation of a secured outlet for maintenance or safety breaks.
AuRandoo 2PCS Plug Lockout Devices
AuRandoo provides a secure cord lock design using robust ABS to resist daily wear and electrical hazards. It fits both 2- and 3-prong plugs, including polarized and non-polarized variants, making it versatile for household tools or professional equipment. The integrated key-retaining safety feature helps prevent accidental key removal, keeping keys attached and accessible to authorized personnel. The lockout devices are designed for straightforward setup, enabling lockouts during maintenance, storage, or compliance checks without specialized tools.
LOCK SOCKET Adjustable Outlet Lock
LOCK SOCKET emphasizes a universal, adjustable approach to outlet locking. Made with fire-resistant ABS, the device is designed to secure 2- and 3-prong plugs and adaptors to wall plates, using a security screw and a dedicated key system. The product is 100% made in the USA, with production and assembly in Florida. Its universal design includes anti-pry features and three locking holes to support multi-person authorization. It suits data centers, security rooms, and critical infrastructure requiring strong, auditable lockout controls.
Buying Guide
- Compatibility: Ensure the lockout device fits the plug type (2- or 3-prong) and grounding (polarized or non-polarized) you use most often.
- Security features: Look for key-retaining mechanisms to prevent key loss, and multi-key or multi-authorizer designs for higher-security environments.
- Material and durability: Nonconductive plastics (ABS/PC blends) with heat and impact resistance are essential for long-term usage in various settings.
- Installation and maintenance: Quick-install devices without tools save time on routine shutdowns; check if the unit includes security screws or specific mounting hardware when needed.
- Compliance and labeling: Some products include “Danger Locked Out Do Not Operate” labels and OSHA-aligned features to meet workplace safety standards.
- Medial and environment suitability: For industrial areas, choose devices rated for higher temperatures and frequent handling; for homes, ease of use and storage capacity (2-pack vs 4-pack) may be more important.
- Legibility and visibility: Bright colors and clear warnings help ensure that a locked outlet is obvious to workers and bystanders, reducing accidental re-energization.
- Scalability: If multiple teams may access outlets, consider solutions with multiple locking holes and shared keys to coordinate lockouts without compromising safety.
When selecting a plug lockout, balance practicality with safety requirements. For smaller tasks or home use, a 2-pack with key retention and simple installation may suffice. For industrial settings, prioritize rugged construction, prominent labeling, and multi-user authorization. The options listed above provide a range of features to cover typical lockout scenarios, from quick-install models to robust industrial devices, enabling safer maintenance practices across environments.