Multi-Pole Breaker Lockout Circuit Breaker Lockout Type Clamp-On For Circuit Breaker Type Multipole For Maximum Padlock Shackle Diameter 9/32 in For Voltage 120/277V AC Maximum Number of Padlocks 2 Overall Height 1.05 in Overall Length 2.25 in Overall Width 2.45 in Features Isolates and Secures Circuit Breaker Switches For Use With Three-Pole Breakers with Tie-Bar Two-Pole Breakers with Tie-Bar Lockout Color Red Lockout Material Glass-Filled Nylon Maximum Temperature 248 Degrees F