--- product_id: 43764338 title: "500 Watt Step Up and Down Electrical Power Voltage Converter Transformer Heavy Duty" brand: "topow" price: "β‚©194507" currency: KRW in_stock: true reviews_count: 2 category: "Topow" url: https://www.desertcart.kr/products/43764338-500-watt-step-up-and-down-electrical-power-voltage-converter store_origin: KR region: South Korea --- # 500W heavy-duty power Dual voltage step up/down Fuse protection + 2 spares 500 Watt Step Up and Down Electrical Power Voltage Converter Transformer Heavy Duty **Brand:** topow **Price:** β‚©194507 **Availability:** βœ… In Stock ## Summary > πŸ”Œ Transform your power gameβ€”never get caught powerless again! ## Quick Answers - **What is this?** 500 Watt Step Up and Down Electrical Power Voltage Converter Transformer Heavy Duty by topow - **How much does it cost?** β‚©194507 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/43764338-500-watt-step-up-and-down-electrical-power-voltage-converter) ## Best For - topow enthusiasts ## Why This Product - Trusted topow brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built-in safety first:** All-range fuse protection with two spare fuses ensures worry-free operation. - β€’ **Dual simultaneous outputs:** Run two devices at once with dedicated 120V US and 220V universal outlets. - β€’ **Power your world seamlessly:** 500W capacity handles most home & industrial devices with ease. - β€’ **Trusted durability & warranty:** CE certified with a 2-year limited warranty for long-term peace of mind. - β€’ **Universal voltage compatibility:** Switch effortlessly between 110V and 220V outputs for global use. ## Overview The Topow ST-500 is a robust 500-watt step up/down voltage transformer designed for both home and industrial use. It supports selectable input voltages (110/120V or 220/240V) and provides dual simultaneous outputs (120V US standard and 220V universal). Equipped with all-range fuse protection and two spare fuses, it ensures safe and reliable operation. CE certified and backed by a 2-year limited warranty, this heavy-duty transformer is your essential travel and power backup companion. ## Description Made by one of the leading manufacturers in the industry, the Topow ST Series step up / step down voltage transformers offer you a safe, reliable, affordable and convenient solution to converting voltages from 110-120 volts up to 220-240 volts, or from 220-240 volts down to 110-120 volts for both home use and industrial applications. The ST-500 is rated at 500 watts maximum. It features a heavy-duty cord with a standard round prong plug plus a free American Flat outlet plug adapter. There are a total of two outputs on the front panel. Two are grounded outputs, one designated for 110 volts with a US standard outlet, the other for 220 volts only with a universal outlet. Also uses a protective standard fuse for extra safety. The manufacturer recommends you purchase a transformer that is 25% higher then the wattage you need. You should know that you will never damage your appliance with a higher voltage transformer, however if you buy one that is not powerful enough, it will not work. Remember to leave at least a 100% slack for the transformer. Using them to maximum capacity will eventually burn the transformer out after prolonged use. Some items, such as laser printers and power tools spike when you turn them on. For these types of situations you need to buy a transformer that is at least 3 times the items capacity. UseAmps to calculate Watts: Volts (times) Amps=WattsFor example 110Vx 5A = 550W Review: Good - Excellent Review: Four Stars - Great product ## Features - Input Voltage: 110/120/220/240 Volt AC Selectable - Output Voltage: 110 Volt or 220 Volt AC Selectable - Simultaneous 2-Mode Output 120V (Standard US Outlet) / 220V (Universal Outlet) - All Range Fuse Protection With Two Spare Fuses Included And Universal Plug Adapter - CE Certified And Two Year Manufacturer's Limited Warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0722GWNWJ | | Best Sellers Rank | #376,158 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,582 in Power Converters | | Brand | TOPOW | | Brand Name | TOPOW | | Current Rating | 5 A | | Customer Reviews | 4.6 out of 5 stars 2 Reviews | | Manufacturer | Topow | | Maximum Frequency | 60 hertz | | Minimum Frequency | 50 hertz | | Model | ST-500 | | Number of Items | 1 | | Part Number | ST-500 | | Power Source | Corded Electric | | Specification Met | CE | | UPC | 606682992956 | | Unit Count | 1 Count | ## Product Details - **Brand:** TOPOW - **Current Rating:** 5 A - **Number of Items:** 1 - **Power Source:** Corded Electric - **Specification Met:** CE ## Images ![500 Watt Step Up and Down Electrical Power Voltage Converter Transformer Heavy Duty - Image 1](https://m.media-amazon.com/images/I/418U0QYvO9L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by A***R on December 16, 2018* Excellent ### ⭐⭐⭐⭐ Four Stars *by R***L on July 28, 2017* Great product --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/43764338-500-watt-step-up-and-down-electrical-power-voltage-converter](https://www.desertcart.kr/products/43764338-500-watt-step-up-and-down-electrical-power-voltage-converter) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-11-01*