--- product_id: 312329399 title: "Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm" brand: "master lock" price: "FREE" currency: EUR in_stock: false reviews_count: 5 category: "Master Lock" url: https://www.desertcart.pt/products/312329399-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical store_origin: PT region: Portugal --- # Fits 120V & 240V breakers Universal padlock compatibility Durable powder-coated steel Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm **Brand:** master lock **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🔐 Lock it down, power up your safety game! ## Quick Answers - **What is this?** Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm by master lock - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/312329399-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical) ## 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 - • **Compact & Portable Design:** Slim 13 x 7 x 3 cm size fits easily in your toolkit or pocket for on-the-go lockout needs. - • **Secure Grip, Zero Slippage:** Patented Grip Tight™ clamp locks toggles with a simple thumb turn for ultimate safety. - • **Versatile Voltage Coverage:** Engineered to fit standard single and double toggles on 120V and 240V circuit breakers. - • **Universal Lock Compatibility:** Works seamlessly with all American Lock® and Master Lock® padlocks plus most lockout hasps. - • **Built to Brave Harsh Conditions:** Powder-coated steel and reinforced polymer ensure long-lasting durability in any environment. ## Overview The Master Lock 493B Grip Tight™ Circuit Breaker Lockout is a compact, durable device designed to securely lock out standard single and double toggle circuit breakers operating at 120V and 240V. Featuring a patented thumb-turn clamp mechanism, it ensures a tight grip on breakers and accepts a wide range of safety padlocks for full lockout compliance. Built with powder-coated steel and reinforced polymer, it withstands harsh environments while remaining portable and easy to use. ## Description Product Description The Mater Lock No. 493B Grip Tight™ Circuit Breaker Lockout Device 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 stands up in harsh environments and compact design is easy to carry and store. Set Contains: 1 x Master Lock Lockout Circuit Breaker Large Review: It's a breaker lockout, does what's its meant to. - It fits great on Siemens and Square-D breakers, locks them out, not much more I could ask for. Doesn't work on Stab-Lock, but if you sill have those, you should change your breaker box. Review: Bien material - Me parece de buena calidad y robusto. un poco caro pero contento con la compra ## Features - Fits standard height and tie-bar toggles typically found on 120 and 240 volt breakers - Adjust to breaker with 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004J173I8 | | Best Sellers Rank | #267,054 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #695 in Keyed Padlocks | | Brand | Master Lock | | Brand Name | Master Lock | | Circuit Breaker Type | Standard | | Circuit breaker type | Standard | | Current Rating | 1 Amps | | Current rating | 1 Amps | | Customer Reviews | 4.6 out of 5 stars 1,318 Reviews | | Global Trade Identification Number | 00071649229725 | | Included Components | Electrical Lockout Device | | Item Dimensions D x W x H | 7D x 13W x 3H centimeters | | Item Type Name | 493B Grip Tight™ Circuit Breaker Lockout | | Item Weight | 0.05 Kilograms | | Manufacturer | Master Lock | | Model | 493 | | Mounting Type | Panel Mount | | Mounting type | Panel Mount | | Number of Items | 1 | | Number of Poles | 1 | | Number of poles | 1 | | Part Number | 493B | | Product dimensions | 7D x 13W x 3H centimeters | | UPC | 071649229725 | | Unit Count | 1 Count | | Voltage | 240 Volts | ## Product Details - **Brand:** Master Lock - **Circuit breaker type:** Standard - **Current rating:** 1 Amps - **Mounting type:** Panel Mount - **Product dimensions:** 7D x 13W x 3H centimeters ## Images ![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 1](https://m.media-amazon.com/images/I/41KEk6QWrzL.jpg) ![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 2](https://m.media-amazon.com/images/I/51Vts-91owL.jpg) ![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 3](https://m.media-amazon.com/images/I/61mCMIZk02L.jpg) ![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 4](https://m.media-amazon.com/images/I/6145enWyiQL.jpg) ![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 5](https://m.media-amazon.com/images/I/51HasiNsTJL.jpg) ## 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 ### ⭐⭐⭐⭐⭐ It's a breaker lockout, does what's its meant to. *by S***F on 22 June 2026* It fits great on Siemens and Square-D breakers, locks them out, not much more I could ask for. Doesn't work on Stab-Lock, but if you sill have those, you should change your breaker box. ### ⭐⭐⭐⭐⭐ Bien material *by E***A on 3 April 2023* Me parece de buena calidad y robusto. un poco caro pero contento con la compra ### ⭐⭐⭐⭐⭐ Muy bien *by A***. on 7 February 2026* Tenía duda si servía para pastillas normales o comunes, pero si le queda. Cumple su función ## 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.pt/products/312329399-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical](https://www.desertcart.pt/products/312329399-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-11*