Master Lock Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B

Works on residential breakers. Make sure you use the included bands to make sure the device has enough surface friction to grip. Great for locking out a breaker that leads outside during a project

I'm an electrician, I use these whenever I work on a job. It keeps someone from flipping on the breaker while I'm working on the circuit. They work perfectly.

Literally, this device can be a life saver. It will prevent unauthorized energization of a circuit. A must have for anyone working on a circuit or on a circuit that needs to remain de-energized.

Thanks to you, City permit inspector guy! Thanks to you I bought one of these to lock off a breaker. If it were up to you, I’d have one on every breaker “just in case!!!”

Simple to use and reliable. Turn to knob until the pads touch both sides of the breaker, close the cover and it clamps down. Simply, easy, reliable.

I was very pleased this was adjustable enough to fit this breaker handle. Was a 480Vac 3ph panel board. I found it fits a variety of BKRs from ABB, Siemens, Eaton, Sqr-D, LS-Electric & others. Don’t panic if the angle of the grippers doesn’t perfectly align with the angle pitch of your breaker handle, just tighten it down, lock it, & you’re good to go. I trust it on the job. Great value, easy to use, it’s worth 30-seconds to keep me alive.

As described

Works with all single, double and triple pole standard breakers. Adjustable finger screw allows for a snug fit on all types and brands.