Master Lock 491B Grip Tight™ Circuit Breaker Lockout Device fits wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers.
- Effectively locks out circuit breakers with a simple thumb turn and then close clamping handle for a tight grip on the toggle.
- Device fits all American Lock & 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.
- 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
- Compact lockout device is easy to carry and easy to store









