--- product_id: 4100264 title: "943121 440mA 1000-V Replacement Fuse,White,Small" brand: "fluke" price: "£15.54" currency: GBP in_stock: true reviews_count: 8 url: https://www.desertcart.co.uk/products/4100264-943121-440ma-1000-v-replacement-fuse-white-small store_origin: GB region: United Kingdom --- # 440mA Fast Acting Compact 2x0.4x0.4 in 1000V Voltage Rating 943121 440mA 1000-V Replacement Fuse,White,Small **Brand:** fluke **Price:** £15.54 **Availability:** ✅ In Stock ## Summary > ⚡ Power Up Your Projects with Fluke's Fast-Acting Fuse! ## Quick Answers - **What is this?** 943121 440mA 1000-V Replacement Fuse,White,Small by fluke - **How much does it cost?** £15.54 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/4100264-943121-440ma-1000-v-replacement-fuse-white-small) ## Best For - fluke enthusiasts ## Why This Product - Trusted fluke brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Brand:** Fluke is synonymous with quality and precision in electrical components. - • **Compact Design:** Measuring just 2 x 0.4 x 0.4 inches, it fits seamlessly into your projects. - • **Easy Installation:** Through-hole mounting makes it a breeze to integrate into your systems. - • **Unmatched Performance:** Experience the reliability of a fast-acting fuse designed for high voltage applications. - • **Single Pack Convenience:** Comes as a single unit, perfect for quick replacements without bulk. ## Overview The Fluke 943121 440mA 1000-V Replacement Fuse is a high-performance, fast-acting cartridge fuse designed for reliable protection in electrical applications. With a compact size of 2 x 0.4 x 0.4 inches and a voltage rating of 1000V, this fuse is perfect for professionals seeking efficiency and safety in their projects. ## Description Product Description Value-priced, high quality tools - leading the market by ensuring that products are rugged, reliable and reasonably priced. From the Manufacturer Fluke Corporation is the world leader in the manufacture, distribution and service of electronic test tools and software. Since its founding in 1948, Fluke has helped define and grow a unique technology market, providing testing and troubleshooting capabilities that have grown to mission critical status in manufacturing and service industries. From industrial electronic installation, maintenance and service, to precision measurement and quality control, Fluke tools help keep business and industry around the globe up and running. As electrical systems grow more and more complex, spikes, transients, surges, and sudden over voltage events become more common. These can trigger a sequence of events that may lead to serious injury. This is why test equipment must be designed to protect people who work in this high-voltage high-current environment. Fluke digital multimeters have been designed to meet the new IEC-1010 standards. More importantly, they have been approved by CSA as actually making these standards, which means they are designed to protect you against transients in three-phase distribution systems. Now you can stock up on Fluke 943121 440 amp 1000-volt replacement fuses for Fluke digital multimeters. This cartridge fuse has a fast acting blow characteristic, a current rating of 440 milliamp, and a 1000-volt rating. The Fluke 943121 440 milliamp 1000-volt replacement fuse comes one item per package, and are not covered by a warranty. ## Features - Current Rating: 440 ma - Blow Characteristic: Fast Acting - Voltage Rating, VAC: 1000V - Cartridge Fuse - 1 per Pack ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Fluke | | Voltage | 1000 Volts | | Item dimensions L x W x H | 2 x 0.4 x 0.4 inches | | Specification Met | csa | | Mounting Type | Through-Hole Mount | | UPC | 095969089906 631908879780 | | Global Trade Identification Number | 00095969089906 | | Manufacturer | Fluke | | Color | White | | Unit Count | 1.0 Count | | Part Number | 943121-FLUKE | | Item Weight | 0.176 ounces | | Product Dimensions | 2 x 0.4 x 0.4 inches | | Item model number | 943121 | | Is Discontinued By Manufacturer | No | | Size | Small | | Power Source | Hand Powered | | Item Package Quantity | 1 | | Included Components | Fluke - Fuse 406X1 375 0 440A 1000V Fast (943121) | | Batteries Included? | No | | Batteries Required? | No | | Warranty Description | No warranty | ## Product Details - **Brand:** Fluke - **Voltage:** 1000 Volts - **Item dimensions L x W x H:** 2 x 0.4 x 0.4 inches - **Specification Met:** csa - **Mounting Type:** Through-Hole Mount ## Images ![943121 440mA 1000-V Replacement Fuse,White,Small - Image 1](https://m.media-amazon.com/images/I/61NG-i28ciL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great, until intern used meter. *by D***R on June 10, 2023* Replaced my dvom fuse. Used it for a week then the intern asked to use it. Now the fuse doesn't work. Just don't understand why. The intern says it's not his fault so I guess I'll need a new one now.. 😄 ### ⭐⭐⭐⭐⭐ Right fuse for my Greenlee *by R***N on December 31, 2013* It's the right part, right price. I haven't blown a fuse yet, but wanted a backup. Local electronics store wanted 17$ for the same fuse (not radio shack). Feels like flat out robbery at that price.I have a Greenlee DM-65, and it uses the same small amp fuse as many flukes, the 1000V, 440 mA, 10kA IR. From the product details, I wasn't clear on IR rating. Didn't seem to say. Although it may be overkill, I wanted to stay with manufacturer recommendations. Turns out this is in fact 10 kA IR. ### ⭐⭐⭐⭐⭐ Fluke 88v fuses *by A***N on December 31, 2023* I have Fluke 88v (an automotive version of the 87v more common meter).To be safe, I replaced both fuses. I was only drawing 10-20A. This is in range of ok, for very short durations. At least for the 88v. ## Frequently Bought Together - Fluke 943121 440mA 1000-V Replacement Fuse,White,Small - DMM-11A Fast Acting Digital Multi-Meter Fuse 11 Amp 1000 Volt 803293 (2 Pack) QSU - Qytos Appliances New DMM-11AR 11A 1000V Fast Acting Fuse 10 x 38mm --- ## 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.co.uk/products/4100264-943121-440ma-1000-v-replacement-fuse-white-small](https://www.desertcart.co.uk/products/4100264-943121-440ma-1000-v-replacement-fuse-white-small) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-13*