Product Details
The Mater Lock® No. 491B Grip Tight™ circuit breaker lockout device is designed to fit both wide and tall breaker toggles typically found on high-voltage and high-amperage breakers. Its innovative patented Grip Tight™ design allows for effective locking of circuit breakers through a simple thumb turn, followed by closing the clamping handle to ensure a tight grip on the toggle. This device boasts great strength with a universal fit and is compact for easy carrying and storage. It is compatible with all American Lock® and Master Lock® safety padlocks, as well as most lockout hasps, and features durable construction with powder-coated steel and reinforced polymer to withstand harsh environments.








