--- product_id: 3671934 title: "Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps" brand: "master lock" price: "KD 4.30" currency: KWD in_stock: true reviews_count: 13 category: "Master Lock" url: https://www.desertcart.com.kw/products/3671934-red-electrical-box-circuit-breaker-lockout-tagout-breaker-box-lock store_origin: KW region: Kuwait --- # Fits 120/240V breakers 24A secure lockout Durable powder-coated steel Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps **Brand:** master lock **Price:** KD 4.30 **Availability:** ✅ In Stock ## Summary > 🔐 Lock it down, power up your safety game! ## Quick Answers - **What is this?** Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps by master lock - **How much does it cost?** KD 4.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/3671934-red-electrical-box-circuit-breaker-lockout-tagout-breaker-box-lock) ## 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 - • **Rugged Durability:** Powder-coated steel and reinforced polymer built to withstand harsh industrial environments - • **Universal Compatibility:** Fits standard single & double toggles on 120V and 240V breakers—no guesswork - • **Compact & Portable Design:** Slim 5-inch profile fits easily in your toolkit for on-the-go safety assurance - • **OSHA-Ready Safety Compliance:** Integrates seamlessly into your lockout/tagout program to keep your team protected and compliant - • **Effortless Grip Tight™ Locking:** Patented thumb-turn and clamp handle for instant, secure breaker lockout ## Overview The Master Lock 493B Circuit Breaker Lockout is a compact, OSHA-compliant device designed to securely lock standard single and double toggle breakers rated up to 24 amps and 240 volts. Featuring a patented Grip Tight™ mechanism, durable powder-coated steel and polymer construction, it ensures reliable lockout in harsh environments while accepting all Master Lock and American Lock safety padlocks for versatile security. ## Description Master Lock 493B Lockout Tagout Circuit Breaker Lockout, Standard Single and Double Toggles fits standard height and tie-bar toggles typically found on 120 and 240 volt 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 circuit breaker lockout design is easy to carry and store. ## Features - Lockout tagout circuit breaker lockout is best used on standard height and tie-bar toggles typically found on 120 and 240 volt 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 1-3/16 in. (3 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 | B004J173I8 | | Best Sellers Rank | #7,356 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Lockout & Tagout Devices | | Brand | Master Lock | | Brand Name | Master Lock | | Circuit Breaker Type | Standard | | Current Rating | 24 Amps | | Customer Reviews | 4.6 out of 5 stars 1,678 Reviews | | Global Trade Identification Number | 00071649229725 | | Included Components | Unit^Instruction Guide | | Item Dimensions D x W x H | 5"D x 3"W x 1"H | | Item Type Name | Lockout Tagout Device Circuit Breaker Lockout | | Item Weight | 0.05 Kilograms | | Manufacturer | Master Lock | | Model | 493 | | Mounting Type | Tie-bar | | Number Of Poles | 1 | | Number of Poles | 1 | | Part Number | 493B | | Product Dimensions | 5"D x 3"W x 1"H | | Smart Home Compatibility | Not Smart Home Compatible | | UPC | 071649229725 | | Unit Count | 1.0 Count | | Voltage | 240 Volts | ## Product Details - **Brand:** Master Lock - **Circuit Breaker Type:** Standard - **Current Rating:** 24 Amps - **Mounting Type:** Tie-bar - **Product Dimensions:** 5"D x 3"W x 1"H ## Images ![Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps - Image 1](https://m.media-amazon.com/images/I/41KEk6QWrzL.jpg) ![Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps - Image 2](https://m.media-amazon.com/images/I/51Vts-91owL.jpg) ![Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps - Image 3](https://m.media-amazon.com/images/I/61mCMIZk02L.jpg) ![Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps - Image 4](https://m.media-amazon.com/images/I/6145enWyiQL.jpg) ![Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B, 24 Amps - Image 5](https://m.media-amazon.com/images/I/51HasiNsTJL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Will these fit double pole breakers or just single pole?** A: It would fit over one side of most 2-pole breakers, which would, in effect, lock out the breaker. This does not fit some larger 277V breakers. **Q: Can this be knocked off with a hammer or pried off with a screwdriver? I need it to be secure!** A: All the person you’re trying to prevent from using the electrical needs to do is remove the entire circuit breaker that has the lock on it and replace it with another breaker to continue to use electricity. Not even locking the wall panel will help, the cover is held on with 4 screws Your only opinion you have left is to place a metal cap over the breaker switch and connect the metal cap to the 220 feed leading into the panel **Q: how wide does the jaws open?** A: It's ment for a breaker. It will fit any breaker from the main power to the 15 and 20 amp ones **Q: i need a device to lock breaker in on position to insure our church organ is not turned off accidently can i reverce this device to use it that way???** A: This device is probably not what you want---it is intended to lock a circuit breaker in the "OFF" position for safe-maintenance situations...they make a breaker lock intended for locking a breaker in the "ON" position...it is intended for applications such as you describe---an alarm system, eg.,...the breaker will still trip if overloaded, but cannot be turned off by accident or un-authorized personnel. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***C on February 28, 2026* ### ⭐⭐⭐⭐⭐ Review *by A***Z on October 6, 2023* ### ⭐⭐⭐⭐⭐ Review *by C***Y on February 15, 2026* ## Frequently Bought Together - Master Lock Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B - TRADESAFE Circuit Breaker Lockout Device, 3 Pack, 480/600 Volt, Clamp-on Breaker Lock Out Device, OSHA Compliant, Premium Grade, Large - TRADESAFE Lockout Tagout Locks Set - 10 Red Loto Locks, Lockout Locks Keyed Different, 2 Keys Per Lock, OSHA Compliant Lock Out Tag Out Padlocks, Safety Padlocks for Electrical Lockout Tag Out Kits --- ## 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.com.kw/products/3671934-red-electrical-box-circuit-breaker-lockout-tagout-breaker-box-lock](https://www.desertcart.com.kw/products/3671934-red-electrical-box-circuit-breaker-lockout-tagout-breaker-box-lock) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-17*