

🔐 Lock it tight, work with confidence — never worry about accidental power-ups!
The Master Lock 491B Circuit Breaker Lockout features a patented Grip Tight™ mechanism designed for wide and tall breaker toggles commonly found in high-voltage and high-amperage applications. Constructed from powder-coated steel and reinforced polymer, it offers durable, OSHA-compliant lockout/tagout safety. Compact and compatible with all Master Lock and American Lock safety padlocks, it ensures secure, reliable breaker isolation in demanding industrial environments.

| ASIN | B004J173HY |
| Best Sellers Rank | #8,209 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Lockout & Tagout Devices |
| Brand | Master Lock |
| Circuit Breaker Type | Standard |
| Current Rating | 2 Amps |
| Date First Available | October 9, 2008 |
| Department | unisex-adult |
| Global Trade Identification Number | 00071649229718, 00712760524589 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.6 ounces |
| Item model number | 491B |
| Manufacturer | Master Lock |
| Mounting Type | Snap-In Mount |
| Number Of Poles | 1 |
| Product Dimensions | 2"D x 1"W x 1"H |
| UPC | 712760524589 789164007574 094704338163 071649229718 |
| Voltage | 120 Volts |
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