🔐 Lock in safety, unlock peace of mind.
The Master Lock 491B Grip Tight Circuit Breaker Lockout is a compact, durable safety device designed to securely lock out high-voltage and high-amperage breaker toggles. Featuring an adjustable clamp with a simple thumb turn, it fits a wide range of breakers and accepts all American and Master Lock padlocks. Constructed from powder-coated steel, reinforced polymer, and a Zenex composite body, it withstands harsh environments and extreme temperatures from -57°C to 182°C, ensuring reliable lockout/tagout protection wherever you work.
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