Circuit Breaker Lockout Circuit Breaker Lockout Type Clamp-On For Circuit Breaker Type Oversized For Maximum Padlock Shackle Diameter 11/32 in For Voltage 120/277V AC Maximum Number of Padlocks 12 Overall Height 2.5 in Overall Length 4 in Overall Width 3.67 in Features Isolates and Secures Circuit Breaker Switches For Use With Three-Phase Breaker Lockout Color Red Lockout Material Polycarbonate Maximum Temperature 251.6 Degrees F Minimum Temperature -22 Degrees F