The Master Lock No. 491B Grip Tight™ Circuit Breaker Lockout Device fits wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers.

The innovative patented Grip Tight™ design effectively locks out circuit breakers with a simple thumb turn and then close clamping handle for a tight grip on the toggle.

The device accepts all American Lock® and Master Lock® safety padlocks and most lockout hasps for full lockout.

Durable construction stands up in harsh environments and compact design is easy to carry and store.

• Grip Tight™ Circuit Breaker Lockout
• Fits wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers
• Innovative patented Grip Tight™ design effectively locks out circuit breakers
• Adjust to breaker with simple thumb turn and then close clamping handle for a tight grip on the toggle
• Great strength with universal fit
• The compact lockout device is easy to carry and easy to store
• Accepts all American Lock and Master Lock safety padlock shackles and lockout hasp diameters
• Durable construction with powder-coated steel and reinforced polymer for operation in harsh environments