--- product_id: 1444424 title: "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]" brand: "rockstone power" price: "¥47472" currency: JPY in_stock: true category: "Rockstone Power" url: https://www.desertcart.jp/products/1444424-rockstone-power-3000-watt-voltage-converter-transformer-heavy-duty-step store_origin: JP region: Japan --- # 3000W heavy-duty power 3-mode simultaneous output full circuit breaker protection 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] **Brand:** rockstone power **Price:** ¥47472 **Availability:** ✅ In Stock ## Summary > 🌍 Power your world, anywhere, anytime! ## Quick Answers - **What is this?** 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] by rockstone power - **How much does it cost?** ¥47472 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1444424-rockstone-power-3000-watt-voltage-converter-transformer-heavy-duty-step) ## 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 - • **Built to Endure:** Robust metal casing with full fuse and overcurrent protection ensures safety and durability. - • **Ready for Anything:** Includes grounded plug adapter, spare fuses, and heavy-duty insulated power cord for instant use. - • **Trusted & Certified:** CE certified with a 3-year warranty and trusted by Tesla and the US Military since 2001. - • **Power Through Borders:** Seamlessly step up or down voltage between 110-240V for global compatibility. - • **Triple Output Convenience:** Simultaneous 110V USA socket, 220V universal socket, plus a 5V USB port for all your devices. ## Overview The ROCKSTONE POWER 3000 Watt Voltage Converter Transformer is a heavy-duty, CE-certified step up/down power converter designed for global use. It supports simultaneous 110V, 220V, and 5V USB outputs, features full circuit breaker protection, and comes with a 3-year warranty. Ideal for professionals needing reliable, versatile power conversion for electronics and industrial equipment worldwide. ## 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. ## 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 | #93,811 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #361 in Power Converters | | Brand Name | ROCKSTONE POWER | | Customer Reviews | 4.2 4.2 out of 5 stars (3,409) | | 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 Hz | | Model | 3000 Watt | | Mounting Type | Surface Mount | | Part Number | 3000 Watt | | Power Source | Corded Electric | | Specification Met | CE | | UPC | 617529014618 | | Unit Count | 1.0 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 ![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] - Image 1](https://m.media-amazon.com/images/I/71naoKv9TdL.jpg) ![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] - Image 2](https://m.media-amazon.com/images/I/71OEniQJ6cL.jpg) ![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] - Image 3](https://m.media-amazon.com/images/I/71fgs0+ZzIL.jpg) ![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] - Image 4](https://m.media-amazon.com/images/I/614V6x5NRQL.jpg) ![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] - Image 5](https://m.media-amazon.com/images/I/710FsqUP-+L.jpg) ## Available Options This product comes in different **Size** options. ## 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.jp/products/1444424-rockstone-power-3000-watt-voltage-converter-transformer-heavy-duty-step](https://www.desertcart.jp/products/1444424-rockstone-power-3000-watt-voltage-converter-transformer-heavy-duty-step) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-04*