AC Motor Speed Controller 120V SCR Variable Fan Speed Regulator

AC Motor Speed Controller – Variable Fan & Tool Speed Regulator

Take full command of your motors, fans, tools, and appliances with this heavy-duty AC Motor Speed Controller. Featuring a precision rotary knob and real-time LED display, this SCR voltage regulator lets you dial in the exact output level you need — from 0 to 220V — with effortless accuracy. Built for home workshops, factories, labs, and more, it's the versatile variable speed solution for professionals and DIYers alike.

Made in China.

Key Features

• Wide Compatibility: Controls the speed, heat, light, and power output of hand drills, electric saws, lamps, heaters, motor fans, and more — suitable for home, factory, or lab use.
• 15A Overload Protection Switch: Built-in safety switch provides 24/7 automatic monitoring, helping guard against overload and short-circuit situations for worry-free operation.
• High-Temperature-Resistant Metal Shell: Durable rust-resistant metal housing with strategically placed heat dissipation vents to maintain a safe operating temperature during extended use. Note: Proper grounding is required for safe use with the metal shell.
• Real-Time LED Display: Accurately reads your adjusted output voltage so you always know exactly what power level your tool or device is receiving.
• Easy Plug-and-Go Operation: Simply plug your tool into the output socket and adjust the rotary knob to your desired setting — no complex wiring required.
• US Plug Compatible: Designed for use in the United States, Canada, India, Mexico, Thailand, Taiwan, the Philippines, and other regions using US-style plugs.

Technical Specifications

Package Contents

• 1 × AC Motor Speed Controller / Voltage Regulator

Note: Due to lighting differences and monitor display variations, the product color may vary slightly from the images shown. Measurement tolerance is ±1–3 cm.

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Frequently Asked Questions

Q: What types of devices can I use with this AC motor speed controller?

A: This variable speed controller is compatible with a wide range of devices including hand drills, electric saws, motor fans, heaters, and lamps. It works wherever you need to regulate speed, heat, light, or power output on AC-powered tools and appliances.

Q: Is the AC motor speed controller safe to use for extended periods?

A: Yes. The controller features a 15A overload protection switch that monitors operation automatically, helping protect against overload and short-circuit conditions. The heat-resistant metal housing with ventilation slots also helps maintain a safe operating temperature during prolonged use. Always ensure the metal shell is properly grounded for maximum safety.

Q: What is the maximum power load this speed controller can handle?

A: This SCR voltage regulator supports a maximum load of 4000W, with a rated current of 9A and a maximum input current of 18A. The adjustable output ranges from 0 to 220V, giving you precise control over your connected devices.

Q: Does this controller work with US standard outlets?

A: Yes. This unit comes with a US Plug and is compatible with standard outlets in the United States, Canada, Mexico, India, Thailand, Taiwan, the Philippines, and other countries using US-style plugs.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.