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