--- product_id: 537532995 title: "4000W AC Variable Speed Controller" brand: "sdrgeek" price: "₹ 6579" currency: INR in_stock: true category: "Sdrgeek" url: https://www.desertcart.in/products/537532995-4000w-ac-variable-speed-controller store_origin: IN region: India --- # 15A max current 4000W max resistive load 0-220V adjustable output 4000W AC Variable Speed Controller **Brand:** sdrgeek **Price:** ₹ 6579 **Availability:** ✅ In Stock ## Summary > ⚙️ Master your motor’s rhythm with precision power control! ## Quick Answers - **What is this?** 4000W AC Variable Speed Controller by sdrgeek - **How much does it cost?** ₹ 6579 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/537532995-4000w-ac-variable-speed-controller) ## Best For - sdrgeek enthusiasts ## Why This Product - Trusted sdrgeek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Premium SMD thyristors and all-aluminum heat sinks ensure durability under high temps. - • **Safety First, Always:** Zero hysteresis with peak absorption circuit protects your device from spikes and surges. - • **Power Meets Precision:** Seamlessly control voltage from 0 to 220V for tailored motor performance. - • **Versatile Compatibility:** Perfect for fans, routers, heaters, and more—empower your workspace with reliable speed control. - • **Industrial-Grade Reliability:** Robust metal casing with double-sided copper PCB and phosphor bronze fittings for ultimate safety. ## Overview The SDRGEEK AC Variable Speed Controller offers adjustable voltage control from 0 to 220V with a maximum current of 15A and supports up to 4000W resistive loads. Engineered with high-quality SMD thyristors, aluminum heat sinks, and a durable metal casing, it ensures reliable, safe operation for various electrical appliances like fans, routers, and heaters. Designed for industrial and DIY applications, it delivers precise motor speed regulation while protecting against electrical spikes and overheating. ## Description AC Variable Speed Controller, 120V~220V 15A 4000W SCR Voltage Controller for Router Fan Electric Motor Rheostat - desertcart.com ## Features - 【Powerful Functions】Compatible with 120V/220V power input, the maximum current is 15A, the output voltage is adjustable from 0-220V, and the limit power is 400W. 4000W is the maximum power when working under a resistive load, and the inductive load is 1/3 of the resistive load. - 【High-quality Materials】 imported high-quality SMD thyristors, all-aluminum heat sinks are suitable for high-temperature circuits, FR-4 circuit boards are heat-resistant and durable, and double-sided copper layer welding increases safety. Note: The product is a metal case and must be grounded safely! - 【Safe and Reliable】 With zero hysteresis and zero delay, it has a peak absorption circuit, which can effectively protect the high power thyristor from sweat, spikes and RC absorption. It is also equipped with multifunctional industrial sockets and thickened phosphor bronze fittings. Multiple layers of fortification give you comprehensive security protect. - 【Applicable Appliances】 Our AC motor speed controllers can be widely used in fans, electric stoves, water heaters, small motors, electric irons, tungsten lamps and other electrical appliances. At present, most motors do not support voltage regulation (such as single-phase motors, asynchronous motors, dual-value capacitor motors, etc.), and are not suitable for smart home appliances with complex circuit boards. - 【Please Note】 Not suitable for smart appliances with complex circuit boards. The maximum power of connecting inductive loads (such as fans and routers) is about 1500W, and the limit power of connecting resistive loads (such as electric furnaces and heating wires) is 4000W. Resistive loads refer to tungsten lamps, heating wires, etc., and inductive loads refer to series-excited motors. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C2VLSVR5 | | Best Sellers Rank | #293,238 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #233 in Electrical Motor Controls | | Brand Name | SDRGEEK | | Color | Black | | Customer Reviews | 3.9 3.9 out of 5 stars (129) | | Display Type | LCD or LED | | Included Components | controller | | Item Dimensions L x W x H | 4.49"L x 3.94"W x 3.15"H | | Item Weight | 1.08 Pounds | | Manufacturer | SDRGEEK | | Material Type | Metal | | Model | SD-4000W-01 | | Part Number | SD-4000W-01 | | Smart Home Compatibility | Not Smart Home Compatible | | Unit Count | 1.0 Count | ## Product Details - **Brand:** SDRGEEK - **Color:** Black - **Item Weight:** 1.08 Pounds - **Material:** Metal - **Product Dimensions:** 4.49"L x 3.94"W x 3.15"H ## Images ![4000W AC Variable Speed Controller - Image 1](https://m.media-amazon.com/images/I/71Bx6q70yBL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: does support a small water pump? I already have a similar one in my water pump, but this one,in the description says it doesn't support it, why?** A: You have to start the motor at 100% and then back it down to the desired RPM. I am running a one horsepower buffer on mine and you can definitely tell when you put too much pressure on it that the motor wants to stall. I would think a water pump would take a lot of amps and not like being slowed down. **Q: does this lower the torque output of the motor?** A: Yes **Q: so i could use this to control the speed on a bench sander / grinder or a bandsaw?** A: I don't think so...I will control things like a shop vac or router...something this is a DC motor that is supplied with AC... **Q: I have an angle grinder, will this work with it? Thanks** A: Yes, the voltage of the angle grinder can be adjusted If you have any questions, please contact our email: Bosun128888@outlook.com ## Frequently Bought Together - AC Variable Speed Controller, 120V~220V 15A 4000W SCR Voltage Controller for Router Fan Electric Motor Rheostat - Leviton 3W101-E 2-Pole, 3 Wire Grounding Plug, Black --- ## 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.in/products/537532995-4000w-ac-variable-speed-controller](https://www.desertcart.in/products/537532995-4000w-ac-variable-speed-controller) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-07-21*