Circuit Breaker Lockout Circuit Breaker Lockout Type Clamp-On For Circuit Breaker Type Single Pole For Maximum Padlock Shackle Diameter 5/16 in For Voltage 480/600V AC Maximum Number of Padlocks 1 Overall Height 2.5 in Overall Length 4 in Overall Width 3.67 in Features Thumb Screw Tightening Mechanism For Use With Circuit Breaker Switches Includes Cleat Lockout Color Red Lockout Material Polycarbonate Mount Type Clamp-On with Screw