Extremely versatile - works on wide range of single-pole and internal-trip multi-pole breakers.
Small will be aplicable on 120 / 277 V breakers, medium for 480 / 600 V & the large lockout fits on breaker switches up to 21 / 4" wide and 7 / 8" thick.
Made of rugged polypropylene and impact modified nylon.
Use twister screw to clamp lockout securely onto switch tongue, then pull cover over thumbscrew and lock in place to prevent clamp from being loosened.
Detachable cleats expand the range of applicable breakers (order separately).