--- product_id: 7392959 title: "Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles" brand: "master lock" price: "VT4594" currency: VUV in_stock: true reviews_count: 13 category: "Master Lock" url: https://www.desertcart.vu/products/7392959-master-lock-491b-lockout-tagout-circuit-breaker-lockout-tall-wide store_origin: VU region: Vanuatu --- # Fits hi-voltage/tall breakers Patented Grip Tight™ lock Durable powder-coated steel Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles **Brand:** master lock **Price:** VT4594 **Availability:** ✅ In Stock ## Summary > 🔐 Lock it tight, work with confidence—because safety never goes out of style. ## Quick Answers - **What is this?** Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles by master lock - **How much does it cost?** VT4594 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/7392959-master-lock-491b-lockout-tagout-circuit-breaker-lockout-tall-wide) ## Best For - master lock enthusiasts ## Why This Product - Trusted master lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Powder-coated steel and reinforced polymer ensure rugged durability in harsh industrial environments. - • **Secure Your Power:** Patented Grip Tight™ design locks breakers with a simple thumb turn for foolproof safety. - • **OSHA-Ready Compliance:** Integrates seamlessly into your lockout/tagout safety program to meet strict OSHA standards. - • **Universal Compatibility:** Accepts all Master Lock and American Lock safety padlocks and lockout hasps for versatile use. - • **Engineered for High Voltage:** Specifically crafted for wide and tall toggles on hi-amperage breakers—no more ill-fitting lockouts. ## Overview The Master Lock 491B Grip Tight™ Circuit Breaker Lockout is a compact, durable device designed to securely lock wide or tall breaker toggles commonly found on high-voltage and high-amperage circuit breakers. Featuring a patented thumb-turn locking mechanism and powder-coated steel construction, it ensures reliable operation in demanding environments. Compatible with all Master Lock and American Lock safety padlocks, it supports OSHA-compliant lockout/tagout safety programs, making it an essential tool for professional electrical safety management. ## Description The Master Lock 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. Device accepts all American Lock® and Master Lock® safety padlocks and most lockout hasps for full lockout. Durable construction and red color with powder coated steel and reinforced polymer stands up in harsh environments. Compact design is easy to carry and store. Review: Good for the price - Works perfectly well for my application. Should make me compliant with safety rules. Review: So Simple And Effective - I bought this breaker lock-out as a reminder to not turn this breaker on, unless you really need it. I use this on the 240V, 50 AMP, Electric Vehicle / Recreational Vehicle outlet that I installed under our breaker panel. Most of the time, this should be turned OFF, but on rare occassion it needs to be turned on. This Lock-out makes it really easy to remember to keep it turned Off when not needed and prevents people from turning it on by accident. The quality of construction is excellent and although I didn't need to use the fitment accessories that came with it, I appreciate that they were included. Nothing is as frustrating as not being able to finish a project beause of a fitment issue. Master Lock had this in mind and they have you covered. Great little product. I would definately buy it again. ## Features - Lockout tagout circuit breaker lockout is best used on wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers; Best used as part of a comprehensive OSHA compliant lockout tagout safety program - 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 - Durable construction with powder coated steel and reinforced polymer for operation in harsh environments - 5-1/8 in. (13 cm) long circuit breaker lockout with 25/32 in. (2 cm) height and 2-3/4 in. (7 cm) depth - Includes one lockout tagout circuit breaker lockout; Accepts all Master Lock and American Lock safety padlock shackles and lockout hasps (padlocks and hasps sold separately) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004J173HY | | Best Sellers Rank | #6,201 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Lockout & Tagout Devices | | Brand Name | Master Lock | | Circuit Breaker Type | Standard | | Customer Reviews | 4.6 4.6 out of 5 stars (1,668) | | Global Trade Identification Number | 00071649229718, 00712760524589 | | Included Components | Lockout | | Item Dimensions D x W x H | 2"D x 1"W x 1"H | | Item Type Name | Grip Tight Lockout for Wide/Tall Circuit Breaker | | Item Weight | 6.4 ounces | | Manufacturer | Master Lock | | Model | 491B | | Mounting Type | Panel Mount | | Number of Poles | 2 | | Part Number | 491B | | UPC | 712760524589 789164007574 094704338163 071649229718 | | Unit Count | 1.0 Count | | Voltage | 120 Volts | | Warranty Description | Manufacturer | ## Product Details - **Brand:** Master Lock - **Circuit Breaker Type:** Standard - **Mounting Type:** Panel Mount - **Number Of Poles:** 2 - **Product Dimensions:** 2"D x 1"W x 1"H ## Images ![Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles - Image 1](https://m.media-amazon.com/images/I/61GT6MscUTL.jpg) ![Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles - Image 2](https://m.media-amazon.com/images/I/71kzz4xgzxL.jpg) ![Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles - Image 3](https://m.media-amazon.com/images/I/614-FcdTokL.jpg) ![Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles - Image 4](https://m.media-amazon.com/images/I/61yEZ+0naRL.jpg) ![Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles - Image 5](https://m.media-amazon.com/images/I/61CgP7eUKAL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good for the price *by J***C on February 28, 2026* Works perfectly well for my application. Should make me compliant with safety rules. ### ⭐⭐⭐⭐⭐ So Simple And Effective *by A***Z on October 6, 2023* I bought this breaker lock-out as a reminder to not turn this breaker on, unless you really need it. I use this on the 240V, 50 AMP, Electric Vehicle / Recreational Vehicle outlet that I installed under our breaker panel. Most of the time, this should be turned OFF, but on rare occassion it needs to be turned on. This Lock-out makes it really easy to remember to keep it turned Off when not needed and prevents people from turning it on by accident. The quality of construction is excellent and although I didn't need to use the fitment accessories that came with it, I appreciate that they were included. Nothing is as frustrating as not being able to finish a project beause of a fitment issue. Master Lock had this in mind and they have you covered. Great little product. I would definately buy it again. ### ⭐⭐⭐⭐⭐ Works to cover unused breaker *by C***Y on February 15, 2026* Works on regular fuse panel ## Frequently Bought Together - Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles, Red - Master Lock Red Lockout Tagout Safety Padlock with Key, Metal Shackle and Non-Conductive Lock Body for Electrical Applications, 410RED - Master Lock Safety Series 1' Jaw Steel Lockout Hasp --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/7392959-master-lock-491b-lockout-tagout-circuit-breaker-lockout-tall-wide](https://www.desertcart.vu/products/7392959-master-lock-491b-lockout-tagout-circuit-breaker-lockout-tall-wide) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-09*