Extremely versatile - works on wide range of single-pole and internal-trip multi-pole breakers.
Aplicable on 120 / 277 V breakers.
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).