Best Screw Circuit Breakers of 2025

The QWORK Lockout Device offers versatile protection by effectively preventing accidental switch-ons, ensuring safety during maintenance. Its universal design allows it to lock out nearly all miniature ISO/DIN circuit breakers worldwide, giving you peace of mind. Made from durable glass-filled nylon, it withstands the rigours of industrial use, making it a reliable choice for your needs. Additionally, its easy installation means you can set it up quickly using a screwdriver or the included dandy twisted screw, accommodating padlock shackles up to 1/2" in diameter.

The Legrand DNX 4500 Breaker is a reliable circuit breaker designed for ease of use. Its grey colour provides a neutral aesthetic that fits well in various settings. Sold individually, it's convenient for specific needs or projects. This circuit breaker operates at 230 V with a capacity of 4.5 kA, ensuring it can handle substantial electrical loads safely. With its straightforward installation process, users can enjoy peace of mind knowing their electrical systems are protected efficiently.

The LT Easiyl Lockout is designed for safe isolation of micro circuit breakers with handles less than 8mm in diameter. This product provides versatile protection, ensuring that accidental switch-ons are effectively prevented. With its durable reinforced nylon construction, you can rely on its sturdiness for long-term use. Additionally, installation is tool-free, thanks to the lockable copper screw, allowing you to secure the lockout without any extra tools, making it convenient for you to use.

The DIYhz 50A Circuit Breaker is designed for reliable protection in various applications, operating up to 32 volts DC and 250 volts AC. With a power rating of 50A, it ensures efficient performance. The included waterproof button cover adds durability, safeguarding against environmental elements. Quick connect terminals facilitate faster installation, allowing you to complete your projects with ease. This circuit breaker features a reset button that pops out during overloads, making it simple for you to reset it by just pushing it back in.

The Bwintech Circuit Breaker Lockout is an essential safety device designed to prevent accidental switch activation. With a lock hole of 9mm and a maximum clamping size of 8mm, it fits a variety of miniature ISO/DIN circuit breakers worldwide, ensuring broad compatibility. Made from high-quality engineering plastic strengthened nylon PA, this lockout is sturdy and durable, able to withstand temperatures ranging from -20°C to 120°C. Its easy installation process allows you to secure your circuit breakers quickly using just a screwdriver, providing you with peace of mind in power isolation.

The TeSys Motor Circuit Breaker by Schneider Electric is designed to enhance control for TeSys K contactors and control relays. This product is ideal if you require additional control contacts, ensuring that your applications operate smoothly. It is particularly useful for simple applications, providing you with an easy choice that meets your needs. With its screw clamp terminals, installation becomes straightforward, allowing you to connect components quickly and efficiently.

The Yuehuabao Circuit Breaker Box is designed with premium materials, ensuring durability and resistance to impact. Its IP65 waterproof rating makes it suitable for both indoor and outdoor use, providing peace of mind in wet conditions. The 8-way configuration allows you to manage multiple circuits efficiently, while the transparent window design lets you easily monitor the switch status. Installation is a breeze, thanks to the included screws and sealing caps, making it a convenient choice for various settings.

The VOANZO Circuit Breaker Lockout is a universal safety device designed to lock out nearly all miniature ISO/DIN circuit breakers globally. Its construction from glass-filled nylon ensures durability, minimising the chance of workplace injuries. You will find it easy to apply, eliminating the need for additional tools, which makes the process hassle-free. This lockout device effectively prevents accidental switch activation, providing peace of mind while you work. It is compatible with all Lockout Safety padlocks and most hasps for added security.

The URAQT DC Circuit Breaker is designed to protect your circuits from overcurrent damage, ensuring safety in your electrical systems. With high sensitivity and fast response, it quickly reacts to faults, enhancing the reliability of your load operations. Its robust performance at a rated voltage of DC500V and current of 63A guarantees longevity and stability. Made from premium materials, including silver-plated contacts for improved electrical life, this breaker is a reliable choice for your photovoltaic systems.

The ABB S201-C13 Breaker offers a wide range of applications, making it an excellent choice for various installations. You can benefit from its compliance with worldwide standards, ensuring reliable performance across different settings. The MCB is equipped with a range of accessories that allow for enhanced control and monitoring, providing you with versatile options. Additionally, its unique bottom-fixing auxiliary contact saves you both space and time during installation, thus streamlining your setup process.