About This Precision Engineered Breaker Lock - Circuit breaker clamp on style engineered to lock out single- and multi pole breakers with toggles up to 1-inch by 2-3/4 inch, isolates hazardous energy and prevents unauthorized access Rugged Circuit Breaker Locks - Extra large breaker lockout made of impact-resistant, non-conductive red polypropylene and black nylon, suitable for heavy industrial use Premium Breaker LOTO Devices - (3) red 480/600 amp breaker locks with 19/64-inch diameter padlock shackle hole, thumbscrew that has a stainless steel screw and nylon knob for fast and firm deployment, no tools required OSHA Compliant - Oversized breaker lockout developed and tested to help businesses exceed compliance with standards Trusted Safety Supplier - TRADESAFE is an established USA based and owned industry expert and reliable safety partner for LOTO compliance supplies Overview Brand : TRADESAFE Current Rating : 600 Amps Circuit Breaker Type : Standard Mounting Type : Panel Mount Number Of Poles : 1