--- product_id: 97166192 title: "3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty]" brand: "goldsource" price: "€ 112.42" currency: EUR in_stock: false url: https://www.desertcart.at/products/97166192-3000w-st-pro-auto-step-up-and-step-down-voltage store_origin: AT region: Austria --- # 3000W max load power Step-up & step-down voltage 4 versatile AC outlets + USB 3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty] **Brand:** goldsource **Price:** € 112.42 **Availability:** ❌ Out of Stock ## Summary > ⚡ Power your world, anywhere you go! ## Quick Answers - **What is this?** 3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty] by goldsource - **How much does it cost?** € 112.42 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/97166192-3000w-st-pro-auto-step-up-and-step-down-voltage) ## Best For - goldsource enthusiasts ## Why This Product - Trusted goldsource brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Soft-Start Safety:** Built-in easy start function prevents circuit breaker trips and protects your home’s electrical system. - • **Dual Voltage Mastery:** Seamlessly converts 110V to 220V and vice versa, perfect for global gadget compatibility. - • **Powerhouse Performance:** Handles up to 3000W max load for heavy-duty appliances without breaking a sweat. - • **Plug & Play Versatility:** Equipped with US, Universal, Schuko AC outlets plus a 5V USB port for all your device needs. - • **Built to Last with Warranty:** Backed by a 3-year warranty, ensuring reliable power conversion for years to come. ## Overview The Goldsource 3000W ST-Pro Voltage Transformer is a heavy-duty, CE-certified step-up and step-down converter designed for professional-grade appliance use. Featuring a 3000W maximum load capacity, four diverse AC outlets including US, Universal, and Schuko types, plus a 5V USB port, it supports a wide range of devices. Its soft-start circuit prevents electrical surges, ensuring safe operation without tripping breakers. Ideal for millennial professionals who demand reliable, versatile power solutions for both home and travel, all backed by a 3-year warranty. ## Description Buy 3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty]: Power Converters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - ★EASY START FUNCTION: This premium and highly functional transformer converter has a soft-start circuit is built inside to prevent an inrush current at the starting moment. Home circuit breaker not trip off at the starting moment. It comes with four input voltages selectable: 110V/200V/220V/240V. - ★HIGHLY FUNCTIONAL CONVERTER: This CE Certified step-up and step-down AC voltage transformer has the ability to convert from 110V up to 220V or from 200/220/240V down to 110V. (Please note a voltage converter does NOT change the frequency, in another word, what goes in is what comes out, either 50 Hz or 60Hz) - ★BEST EFFECTIVE TRANFORMER CONVERTER: Unlike other converters, we have designed this one with 3,000 watts Maximum Load Capacity (MLC), most suitable and cost-effective for devices such as rice cookers, hot water pots, household food mixers, blenders with the Maximum Power Consumption (MPC) between 1050 and 2250 watts. - ★QUALITY STABLE OUTPUT CONSUMPTION: This voltage transformer has 100% loading capacity. It has 4 AC outlets including two 110V US standard, one 220V Universal and one German/French Schuko plus one DC 5V USB which makes it work perfectly well. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07KGMK47S | | Best Sellers Rank | #924,889 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,365 in Power Converters | | Brand | Goldsource | | Brand Name | Goldsource | | Customer Reviews | 4.3 out of 5 stars 184 Reviews | | EU Spare Part Availability Duration | 3 Years | | Manufacturer | Goldsource | | Maximum Frequency | 60 Hz | | Minimum Frequency | 50 Hz | | Model | ST-Pro 3000W | | Mounting Type | Plug Mount | | Part Number | ST | | Power Source | Corded Electric | ## Product Details - **Brand:** Goldsource - **Manufacturer:** Goldsource - **Mounting Type:** Plug Mount - **Power Source:** Corded Electric ## Images ![3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty] - Image 1](https://m.media-amazon.com/images/I/61oyq4ePV0L.jpg) ![3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty] - Image 2](https://m.media-amazon.com/images/I/71RpUY7Q23L.jpg) ![3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty] - Image 3](https://m.media-amazon.com/images/I/71pVV27WqOL.jpg) ![3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty] - Image 4](https://m.media-amazon.com/images/I/61aT-kwYK3L.jpg) ![3000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty] - Image 5](https://m.media-amazon.com/images/I/81DxYoA1KyL.jpg) ## Questions & Answers **Q: In countries with 220 v ac, is it safe to use this 3000 w 50 hz step up & step down converter to my keurig coffee maker 1470 w 60 hz 120 v ac?** A: The problem is that most countries will not have circuit breakers That could take 3000 W draw when you initially turn on this unit. That was the exact problem I had in Tel Aviv. Every time I plugged in the unit and switched it on it popped the circuit breakers in my house. I would do research but I wouldn’t go above 1500 W max to run a coffee maker. **Q: I need 12.5 amps (3000w) 240vac output. By my math, that's a 25 amp input of 120vac which exceeds my 15 amp input circuit - is that right?** A: Yes **Q: On the 3000w model does it have terminals to connect bare wire on 120v input? From the pictures it shows a 15 amp 3-prong plug, it needs 30a** A: Yes it does **Q: Will this work with a 120V 1050W espresso machine in Australia?** A: I don’t think so. I’ve uses it for an European espresso machine with similar specks and it failed after a few days. I think you need at least 3000W to 5000W --- ## 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.at/products/97166192-3000w-st-pro-auto-step-up-and-step-down-voltage](https://www.desertcart.at/products/97166192-3000w-st-pro-auto-step-up-and-step-down-voltage) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-10*