--- product_id: 1444424 title: "3000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty]" brand: "rockstone power" price: "€ 442.41" currency: EUR in_stock: true reviews_count: 10 category: "Rockstone Power" url: https://www.desertcart.fr/products/1444424-3000-watt-voltage-converter-transformer-heavy-duty-step-up-down store_origin: FR region: France --- # 3000W heavy-duty power Step up/down 110-240V Full fuse & overcurrent protection 3000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty] **Brand:** rockstone power **Price:** € 442.41 **Availability:** ✅ In Stock ## Summary > 🌍 Power Up Anywhere, Anytime — Because Your Devices Deserve the Best! ## Quick Answers - **What is this?** 3000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty] by rockstone power - **How much does it cost?** € 442.41 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/1444424-3000-watt-voltage-converter-transformer-heavy-duty-step-up-down) ## Best For - rockstone power enthusiasts ## Why This Product - Trusted rockstone power brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted & Certified:** CE certified with a 3-year warranty, backed by a brand that supports the US Military since 2001—reliability you can count on. - • **Plug & Play Anywhere:** Includes American to European grounded Schuko adapter and spare fuses, making global power conversion effortless and worry-free. - • **Triple Output Convenience:** Simultaneous 5V USB, 120V USA, and 220V universal sockets keep all your essential gadgets powered without compromise. - • **Power Your Global Lifestyle:** Seamlessly convert voltage from 110-120V to 220-240V and vice versa, perfect for international professionals and travelers. - • **Built to Last, Built for Safety:** Robust metal casing with full-range fuse and overcurrent protection ensures your devices and workspace stay secure. ## Overview The ROCKSTONE POWER 3000 Watt Voltage Converter Transformer is a heavy-duty, CE-certified step up/down power converter designed for professional and industrial use. It supports voltage conversion between 110-120V and 220-240V, features a durable metal casing, full fuse and overcurrent protection, and offers simultaneous 5V USB, 120V USA, and 220V universal outputs. With a 3-year warranty and included international plug adapter, it’s engineered for seamless global power compatibility and safety. ## Description ROCKSTONE POWER? takes pride in being an industry leader in Quality, Technology and Innovation, our factory is the global leader and one of the largest manufacturers in the industry. Product Features 3000 Watts Heavy Duty Step Up/Down Voltage Transformer Converter. Step Up Voltage from 110-120 Volts to 220-240 Volts. Or Step Down Voltage from 220-240 Volts to 110-120 Volts. Patented Simultaneous 3-Mode Output: 5V USB Port / 120V USA Output Socket / 220V Universal Output Socket. Metal Casing. ON/OFF Switch with LED indicator light. Hardwired heavy-duty insulated power cord with USA Grounded 3-Prong Plug. CE Certified. Full Range Fuse Protection. Full Range Over Current Protection. Purchase Guide ROCKSTONE POWER? Heavy Duty Step Up/Down Transformers aka Voltage Converters, Voltage Transformers, Power Converters, Step Up Converters, Step Down Converters, Dual Voltage Transformers, are meant for worldwide use for all electronics, heavy duty machines, or household & industrial applications. For safety reasons, it?s recommended to use a Voltage Converter / Transformer that's max watts is at least 50% higher than your appliance. For example, if your appliance is rated at 1000 watts, you need to buy a Transformer with a max power of at least 1500 watts or greater. Some appliances, such as heating appliances, power tools, motors, laser printers and TVs, require 2-4 times more watts at start up than the printed rated wattage. What's in the Box - ROCKSTONE POWER? 3000 Watt Heavy Duty Step Up/Down Voltage Transformer Converter - American to European Grounded Schuko Wall Outlet Plug Adapter - 2 PCS Spare Fuses - Instruction Manual Warranty Manufacturer 3-year limited warranty. Please contact us via email if you have any questions. Review: Going strong since 2016 - We purchased this on our return from Europe to power a Jura S9 Coffee Machine. It runs 24/7 (short break during a move) and has been working superbly. No noise. Steady power. We use the 220v side for the coffee machine and the 110v side for some Hue light strips. It sits tucked behind the Jura on the counter. A few things to note: It's pretty bulky. It's about 10" deep, 8" wide, 6"high and really heavy. There are different voltage plugs to connect to on the face so be aware of what you are plugging in. If you have a 110v item plugged into the 220v outlet, you'll have issues (like other reviews showed above). Using a smart plug may save you money in the long run as you can schedule it to turn on/off. I haven't done that because of the light strip but I haven't really seen an impact on our electricity bill. Overall a great, reliable (if used correctly) product that allowed us to keep our $2k+ Jura (did not pay close to that!) for a very fair price which made my German wife extremely happy in turn improving my quality of life. Review: Excellent converter — works perfectly with our European coffee machine! - This converter has been a lifesaver for us. We brought our coffee machine from Europe to the U.S. a few years ago, and thanks to this transformer, we’ve been able to use it every day without any issues. The quality has been great so far, and it hasn’t let us down at all. We’re still enjoying our machine just like back home. Highly recommend! ## Features - Package Contents: Rockstone Power® 3000 Watt Heavy Duty Voltage Transformer Converter, American to European Grounded Schuko Wall Outlet Plug Adapter, 2 PCS Spare Fuses, and Instruction Manual. - 3000 Watts Heavy Duty Step Up/Down Voltage Transformer Converter. Step Up Voltage from 110-120 Volts to 220-240 Volts. Step Down Voltage from 220-240 Volts to 110-120 Volts. - CE Certified. 3-Year Manufacturer's Limited Warranty. Metal Casing. Full Range Fuse Protection. Full Range Over Current Protection. - RockStone Power® proudly supports the United States Military since 2001. Shipping is available to all Overseas Military APO/FPO/DPO addresses. - 3-Year Manufacturer's Limited Warranty. CE Certified. Full Range Fuse Protection. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00CLYMMCC | | Best Sellers Rank | #123,743 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #479 in Power Converters | | Brand | ROCKSTONE POWER | | Brand Name | ROCKSTONE POWER | | Customer Reviews | 4.2 out of 5 stars 1,002 Reviews | | Global Trade Identification Number | 00617529014618 | | Included Components | Power Converter;American to European Grounded Schuko Wall Outlet Plug Adapter;2 PCS Spare Fuses;Instruction Manual | | Item Weight | 26 pounds | | Manufacturer | E Depot Express | | Minimum Frequency | 50 hertz | | Model | 3000 Watt | | Mounting Type | Surface Mount | | Number of Items | 1 | | Part Number | 3000 Watt | | Power Source | Corded Electric | | Specification Met | CE | | UPC | 617529014618 | | Unit Count | 1 Count | | Warranty Description | 3 year manufacturer | ## Product Details - **Brand:** ROCKSTONE POWER - **Item Weight:** 26 pounds - **Mounting Type:** Surface Mount - **Power Source:** Corded Electric - **Specification Met:** CE ## Images ![3000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty] - Image 1](https://m.media-amazon.com/images/I/71naoKv9TdL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Going strong since 2016 *by J***O on February 21, 2022* We purchased this on our return from Europe to power a Jura S9 Coffee Machine. It runs 24/7 (short break during a move) and has been working superbly. No noise. Steady power. We use the 220v side for the coffee machine and the 110v side for some Hue light strips. It sits tucked behind the Jura on the counter. A few things to note: It's pretty bulky. It's about 10" deep, 8" wide, 6"high and really heavy. There are different voltage plugs to connect to on the face so be aware of what you are plugging in. If you have a 110v item plugged into the 220v outlet, you'll have issues (like other reviews showed above). Using a smart plug may save you money in the long run as you can schedule it to turn on/off. I haven't done that because of the light strip but I haven't really seen an impact on our electricity bill. Overall a great, reliable (if used correctly) product that allowed us to keep our $2k+ Jura (did not pay close to that!) for a very fair price which made my German wife extremely happy in turn improving my quality of life. ### ⭐⭐⭐⭐⭐ Excellent converter — works perfectly with our European coffee machine! *by A***L on November 19, 2025* This converter has been a lifesaver for us. We brought our coffee machine from Europe to the U.S. a few years ago, and thanks to this transformer, we’ve been able to use it every day without any issues. The quality has been great so far, and it hasn’t let us down at all. We’re still enjoying our machine just like back home. Highly recommend! ### ⭐⭐⭐⭐⭐ Going strong for 5 yrs *by L***L on September 8, 2026* Still going strong after 5 yrs. ## Frequently Bought Together - ROCKSTONE POWER 3000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty] - 8 Pack Universal Adapter, UK to US Adapter, Europe to US Plug Adapter, Travel Adapters, European to USA General Adapter, American Outlet Plug Adapter (White) --- ## 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.fr/products/1444424-3000-watt-voltage-converter-transformer-heavy-duty-step-up-down](https://www.desertcart.fr/products/1444424-3000-watt-voltage-converter-transformer-heavy-duty-step-up-down) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-10-06*