--- product_id: 53079298 title: "500VA Variable Auto Transformer" brand: "yaeccc" price: "A$161" currency: AUD in_stock: true reviews_count: 9 category: "Yaeccc" url: https://www.desertcart.com.au/products/53079298-500va-variable-auto-transformer store_origin: AU region: Australia --- # 0-130VAC Output Range 500W Power Capacity Over-Voltage Protection 500VA Variable Auto Transformer **Brand:** yaeccc **Price:** A$161 **Availability:** ✅ In Stock ## Summary > ⚡ Transform Your Power Game! ## Quick Answers - **What is this?** 500VA Variable Auto Transformer by yaeccc - **How much does it cost?** A$161 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/53079298-500va-variable-auto-transformer) ## Best For - yaeccc enthusiasts ## Why This Product - Trusted yaeccc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Equipped with over-voltage protection for peace of mind. - • **Built to Last:** Durable copper coil construction ensures longevity. - • **User-Friendly Design:** Includes an On/Off switch and output volt meter for easy monitoring. - • **Perfect for Professionals:** Ideal for coffee roasting, motor speed control, and more! - • **Versatile Voltage Control:** Adjusts from 0-130VAC for diverse applications. ## Overview The YaeCCC Auto Voltage Transformer is a robust 500W adjustable transformer designed for a wide range of applications, featuring a 0-130VAC output, built-in safety mechanisms, and durable construction, making it an essential tool for professionals in various fields. ## Description Product description 0 - 130V Adjustable Wide voltage range (0-130V), the user can choose within the voltage range according to demand. Effective Heat Dissipation Adopts large cooling vents offering powerful cooling capacity Built-in Copper Coil Built-in high-quality copper coil，more secure and durable. High efficiency and with no waveform distortion. YaeCCC Auto Voltage Transformer AC Variable Voltage Converter Transformer 110VAC Input, 0-130VAC (500W) Specification Material: Iron (shell),Copper coil Max. 500VA Input Voltage: AC 110V/60Hz Output Voltage: AC 0-130V/60Hz Max output: 3.8 Amps Condition Temperature: <40℃ Working Hours: 8 hours Withstand Voltage: 2K V 1 minute Power Cord length: Approx. 125cm/5" Dimensions:14x11x14.5cm/5.51x4.33x5.71" Product's Description This Red Variable Voltage Converter Transformer is enclosed, non-isolated, adjustable with wide voltage range (0-130V),with an output voltmeter, on/off power switch & power cord, a built-in copper coil with high-quality material providing more secure and durable user experiences. With On/Off power switch and fuse & power cord to provide perfect overload protection, it can be used safely. Packaged included 1 x AC Power Transformer 1 x User Manual Wide Application Suit for home coffee roasting, Motor Speed control, Label Printing Machine, EE Labs, Test for Railroad Switching, Power Supplies, Satellite, Equipment, Telecommunication Equipment. Review: Good cheap Variac - I bought this to control the voltage of my guitar amps and it does the job well. The viltage regulator is accurate from 0-130VAC, with a 5A fuse. Its heavy and built well. Review: works, for the price its good. - the VU meter matches the dial labeling but nether of those match actual output voltage. the dial is labeled in increments of 13 volts and for every increment +1v or +2v is added to the actual voltage so at 13v dial setting I get 15v, at 26v dial setting I get 30v, etc. at 130v dial setting I get 148v output. output spikes -1.3v at max output (148v) and -0.6v at near min setting (2v) periodically (~2hz, smooth spike). aside from this spike voltage is +/- 0.1v for about 70% of the time, the other 30% being that spike happening. attached is a multi meter test for the dial sweep. dial was turned from min to max to min at a more or less constant rate a few times. voltage spike happens with my unit at around 25v and its significant. you can see it in the picture. the rest of the transition from min voltage to max is smooth. scale of the graph is 0v-160v mean is 80v. also attached is oscilloscope reading of the output at 2v. my scope is only rated for 10v max and im not going to push it with this unit. shows 60hz +/- 0.1hz with a periodic spike in hz every so often which makes it dip to sub 20hz. spike is super short (a few microsecond or less is my guess, didn't bother to try and catch it on the scope to measure it explicitly.) and happens less than once per second so no big deal. you can see that spike measured in the statistics frame on the oscilloscope image under the Min column, average column is still close to 60z so its not a significant spike. if you care about a spike that short you probably care about the waveform too - scope shows a pretty clean saw waveform, not sine wave. this aint guna be lab gear. all in all, for the price, its fine. its not supposed to be lab equipment and as long as you mind the actual output voltage it should work well. im pretty happy with it. UPDATE: been running 24/7 for 11 months, no issues at all. ## Features - - Enclosed, non-isolated, Adjustable transformer, with Output Volt Meter.On/Off Power Switch(Lighted),5A fuse & power cord. - - Over-voltage protection, the use of more security.Contact voltage transformer, wide voltage range (0-130V) - - Built-in copper coil, material quality, more secure and durable.High efficiency and with no waveform distortion. - - Suit for home coffee roasting,Motor Speed control,Label Printing Machine,EE Labs,Test for Railroad Switching, Power Supplies, Satellite,Equipment,Telecommunication Equipment. - Please note that most device have surge (when first turn on) much higher than operating amp rating. E.g, motor with 5 amp rating may have over 10 amp surge, and you will need 10 amp transformer. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B076Y2XHRS | | Best Sellers Rank | #106,304 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #396 in Power Converters | | Brand | Yaeccc | | Brand Name | Yaeccc | | Current Rating | 10 Amps, 5 Amps | | Customer Reviews | 4.5 out of 5 stars 349 Reviews | | Item Dimensions D x W x H | 4.33"D x 5.51"W x 5.7"H | | Item Weight | 8.4 Pounds | | Manufacturer | Yae First Trading Co.,Itd | | Maximum Frequency | 60 Hz | | Minimum Frequency | 60 Hz | | Model | 0.5KVA | | Mounting Type | Wall Mount | | Part Number | TEK-AB-0308 WI-0048 AB-0379 AB-0378 | | Power Source | Corded Electric | | Product Dimensions | 4.33"D x 5.51"W x 5.7"H | | UPC | 602989770891 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Yaeccc - **Power Source:** Corded Electric - **Product Dimensions:** 4.33"D x 5.51"W x 5.7"H - **Mounting Type:** Wall Mount - **Current Rating:** 5 Amps, 10 Amps ## Images ![500VA Variable Auto Transformer - Image 1](https://m.media-amazon.com/images/I/619aUaerb5L.jpg) ![500VA Variable Auto Transformer - Image 2](https://m.media-amazon.com/images/I/7142i5R6bXL.jpg) ![500VA Variable Auto Transformer - Image 3](https://m.media-amazon.com/images/I/81vpbKGdEBL.jpg) ![500VA Variable Auto Transformer - Image 4](https://m.media-amazon.com/images/I/71h+amTPnBL.jpg) ![500VA Variable Auto Transformer - Image 5](https://m.media-amazon.com/images/I/71m4ERVp-vL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good cheap Variac *by T***Y on January 13, 2026* I bought this to control the voltage of my guitar amps and it does the job well. The viltage regulator is accurate from 0-130VAC, with a 5A fuse. Its heavy and built well. ### ⭐⭐⭐⭐⭐ works, for the price its good. *by W***T on December 31, 2018* the VU meter matches the dial labeling but nether of those match actual output voltage. the dial is labeled in increments of 13 volts and for every increment +1v or +2v is added to the actual voltage so at 13v dial setting I get 15v, at 26v dial setting I get 30v, etc. at 130v dial setting I get 148v output. output spikes -1.3v at max output (148v) and -0.6v at near min setting (2v) periodically (~2hz, smooth spike). aside from this spike voltage is +/- 0.1v for about 70% of the time, the other 30% being that spike happening. attached is a multi meter test for the dial sweep. dial was turned from min to max to min at a more or less constant rate a few times. voltage spike happens with my unit at around 25v and its significant. you can see it in the picture. the rest of the transition from min voltage to max is smooth. scale of the graph is 0v-160v mean is 80v. also attached is oscilloscope reading of the output at 2v. my scope is only rated for 10v max and im not going to push it with this unit. shows 60hz +/- 0.1hz with a periodic spike in hz every so often which makes it dip to sub 20hz. spike is super short (a few microsecond or less is my guess, didn't bother to try and catch it on the scope to measure it explicitly.) and happens less than once per second so no big deal. you can see that spike measured in the statistics frame on the oscilloscope image under the Min column, average column is still close to 60z so its not a significant spike. if you care about a spike that short you probably care about the waveform too - scope shows a pretty clean saw waveform, not sine wave. this aint guna be lab gear. all in all, for the price, its fine. its not supposed to be lab equipment and as long as you mind the actual output voltage it should work well. im pretty happy with it. UPDATE: been running 24/7 for 11 months, no issues at all. ### ⭐⭐⭐⭐⭐ Love it *by J***R on March 13, 2026* Works as described - just be sure to check the AC output for fluctuations as this is AC so incoming power affects the output ## Frequently Bought Together - YaeCCC Auto Voltage Transformer AC Variable Voltage Converter Transformer 110VAC Input, 0-130VAC (500W) - Xytronic ITR300 Jameco Valuepro Isolation Power Transformer, 120VAC, 300Va, 3.2" Width, 4.6" Length, 4.2" Height - WGGE WG-026 10 Pieces and 5 Colors Test Lead Set & Alligator Clips,20.5 inches / 22 AWG Copper Wire. The Clips soldered and Stamping to The Wires. (1 Pack) --- ## 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.com.au/products/53079298-500va-variable-auto-transformer](https://www.desertcart.com.au/products/53079298-500va-variable-auto-transformer) --- *Product available on Desertcart Australia* *Store origin: AU* *Last updated: 2026-05-22*