Hinged Single-Pole Breaker Lockouts by IDEAL are crafted with locking post design, and locks lever in off position to isolate and prevent the use of breaker. It has a voltage rating of 120/277 Volts and has 0.28-Inch shackle diameter. It features a universal model that has unique screw clamp to lockout all Single-Pole Breakers, and is ideal for applications where panel closure is preferred. Meets RoHS standards.