Durable polypropylene and nylon clamp-on lockouts designed for 120/277V (single- and multi-pole), 480/600V, and oversize circuit breakers. All models install quickly with a thumbscrew and accommodate one padlock with shackles up to 9/32". Available in multiple sizes to fit standard, multi-pole, and oversized breakers; select models include a detachable cleat and support OSHA 1910.147 compliance.