Miniature circuit breaker lockout device locks out miniature ISO/ DIN pin-out circuit breakers. Fits breakers with standard toggle openings 11mm or less. Device works with all Master Lock and American Lock safety padlocks and most hasps. Plastic Body Weather-Resistant Max. Shackle Diameter: 6mm Fits Openings Up to 11mm Isolate Energy Sources in Your Plant Ensure Your Employees Safety Adapted for ATEX Sites Locks Out Most Miniature ISO/DIN Circuit Breakers Use With Any Master Lock Safety Padlock Plastic Body Weather-Resistant Max. Shackle Diameter: 6mm Fits Openings Up to 11mm Isolate Energy Sources in Your Plant Ensure Your Employees Safety Adapted for ATEX Sites Locks Out Most Miniature ISO/DIN Circuit Breakers Use With Any Master Lock Safety Padlock