Miniature Circuit Breaker (MCB) LockoutA safe and effective method for locking out DIN Miniature Circuit Breakers. Unique! requires no tools to install. The lockout easily installs with the aid of a push button. Overview Improve your business's Electrical Lockout Program with these DIN style circuit breaker lockout devices. They are easily installed with no tools required and can be partnered with our range of Safety Lockout Padlocks and Hasps to ensure the safety of your workers whilst