--- product_id: 740359733 title: "QNK 3KW 4HP 220V AC 14A VFD Converter Single to 3 Phase Inverter Variable Fre..." brand: "qnk" price: "¥49710" currency: JPY in_stock: true reviews_count: 2 category: "Qnk" url: https://www.desertcart.jp/products/740359733-qnk-3kw-4hp-220v-ac-14a-vfd-converter-single-to store_origin: JP region: Japan --- # 3KW Power Output 0-1000 Hz Variable Frequency Range Multi-layer Protection System QNK 3KW 4HP 220V AC 14A VFD Converter Single to 3 Phase Inverter Variable Fre... **Brand:** qnk **Price:** ¥49710 **Availability:** ✅ In Stock ## Summary > ⚙️ Power your CNC and industrial motors with precision and peace of mind! ## Quick Answers - **What is this?** QNK 3KW 4HP 220V AC 14A VFD Converter Single to 3 Phase Inverter Variable Fre... by qnk - **How much does it cost?** ¥49710 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/740359733-qnk-3kw-4hp-220v-ac-14a-vfd-converter-single-to) ## Best For - qnk enthusiasts ## Why This Product - Trusted qnk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Flame-retardant ABS chassis with copper coil internals and efficient cooling fan - • **Smart Connectivity:** RS-485 MODBUS communication for seamless integration with PLC/DCS systems - • **Precision Speed Control:** 8/16-stage speed settings for tailored motor performance - • **Robust & Silent Operation:** Low-noise PWM tech with advanced electromagnetic interference reduction - • **Comprehensive Safety Suite:** Overload, overheat, short circuit, and voltage protections for worry-free use ## Overview The QNK 3KW 4HP 220V VFD Converter transforms single-phase input into a stable 3-phase output with a wide 0-1000 Hz frequency range, enabling precise motor speed control. Engineered with advanced PWM technology, it ensures low noise and minimal electromagnetic interference. Featuring robust safety protections and a durable flame-retardant casing, this inverter is ideal for CNC spindles, pumps, compressors, and more. Its RS-485 communication port allows smart integration into automated systems, making it a must-have for professionals upgrading or optimizing motor-driven equipment. ## Description Product description 3KW 220V Variable Frequency Drive This VFD converter can be used for constant-torque loads ( air compressors, HVAC units, and other hard-start kits.) and variable-torque loads (pumps, fans, etc.). It can also be used as a motor speed controller and phase converter. This VFD features 1- or 3-phase input and 3-phase output, and you can adjust the speed as needed. Adopting sine wave PWN, this inverter’s control system features high torque drive, high-accuracy wide-range speed regulation that has 8-stage / 16-stage speed control, program operation, four settings of acceleration/deceleration time, and more. NOTE 1. The VFD can’t be used as a power source for other equipment, or to drive a motor with a supply voltage lower than 90V. 2. Do not connect the VFD’s output terminals with capacitive loads. 3. Choose a VFD with a larger power output when operating heavy equipment like the crane and compressor, e.g.,a 5.5 Kw motor should be connected to a 7.5 Kw VFD. 4. If a generator is used to power the VFD, ensure that the generator's output voltage level is within +/-15%. Specifications Power:3KW Input Voltage: 220V(+/-15%)/ 180V-250V Output Voltage: 0-220V Input Current: 0-14A Output Current: 0-14A Input Phase: 1 or 3 Phase Output Phase: 3 Phase Input Frequency: 50/60 Hz Output Frequency: 0-1000 Hz Package Includes 1* 3KW VFD 1* Operation Manual 1* Extension Wire Powerful Cooling Fan The fan adopts an independent air duct design for efficient heat dissipation, ensuring that the internal temperature of the inverter is suitable for long-term stable operation. Braking Resistance The VFD can be connected with an external braking resistor (not included), which can consume the energy generated by the motor with an energy feedback device, such as the motor of lifting equipment or centrifugal equipment, and allows for fast braking of the motor, e.g., enabling the spindle of an engraving machine with a peed of 24,000 rpm/min stop within 0.5s-2s.) High-Quality Material The ABS VFD chassis is flame retardant, anti-impact, and corrosion-free. It performs well in protecting the breaker from tripping and has good anti-jamming performance of temperature, humidity, and dust. RS-485 Communication Function With RS-485, a single controller, e.g. a PLC or DCS, can control multiple inverters. Also, this VFD's start, stop, frequency setting, status monitoring and feedback, etc., are all controllable through RS-485. Dual-Chip Design The motor program of the VFD frequency converter is independent from the control program, which features redundant computation, strong anti-interference ability, high-speed running, and stable operation. Multiple Protection Overload protection Overheat protection Over-voltage protection Low-voltage protection Fuse protection Stall protection Short circuit protection Restart protection Review: Works beautifly. - Needed this to control a new motor for my lathe to give me variable speed without moving the drive belt (DIY upgrade). The instructions on how to program it are pretty good - no trouble following them. Combined with an RPM sensor, I have exactly what I need. Review: Works great, and easy setup. - Works great! ## Features - 【3KW (4HP) Variable Frequency Drive 】Input: 1-phase 220 VAC (+/- 15%), 0-14 A, and 50/60 Hz. Output: 3-phase 220 VAC, 0-14A, and 0-1,000 Hz. - 【Low-Noise Operation & Low Electromagnetic Interference】 The PMW control technology and a component compatibility design allow this VFD for low-noise operation and low electromagnetic interference. - 【V/F Control & Vector Control】 The VFD frequency setting mode includes digital setting, analog setting, serial communication setting (RS485 communication port, adopting standard international MODBUS main circuit control), PID setting (advanced calculus PID closed-loop arithmetic, quick responding speed, and high suitability), etc. - 【Improved Safety & Durability】QNK VFD features protective functions for overload, fuse, over voltage (DC voltage>400V) or under voltage (DC voltage<200V), restart, stall, short circuit, and overheat. Moreover, it comes with copper coil internals and a nonflammable exterior for durability and a multi-grid design with enough cooling space between the electronic components and the case for fast heat dissipation.It also can prevent dust, water mist entering the circuit board section effectively. - 【Wide Application】The VFD can be used in various types of equipment such as Spindle Motors, CNC Routers, Milling Machines, Pumps, Compressors, Grinders, among others. - 【Attention】Please Note:1.This VFD surpport external resistor!!! If your motor is heavy load, pls choose a higher power level VFD or contact sales for model selection suggestion. 2.The VFD can’t be used as a power source for other equipment, or to drive a motor with a supply voltage lower than 90V. 3.Do not connect the VFD’s output terminals with capacitive loads.4.Choose a VFD with a larger power output when operating heavy equipment like the crane and compressor, e.g.,a 5.5 Kw motor should be connected to a 7.5 Kw VFD. 4.If a generator is used to power the VFD, ensure that the generator's output voltage level is within +/-15%. - 【Customer Service】If there is an error code in the product and you do not know how to operate,or other questions of this product,pls feel free to contact us. Customer Support Team will help you as soon as we can within 24h. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0F5W8FDPQ | | Antenna Location | Home | | Battery Capacity | 14 Amp Hours | | Best Sellers Rank | #107,507 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #36 in Electrical Motor Controls | | Brand | QNK | | Built-In Media | 3KW220V-W | | Color | White | | Customer Reviews | 4.7 out of 5 stars 10 Reviews | | Input Voltage | 220 Volts | | Manufacturer | China | | Mfr Part Number | 3KW220V-W | | Model Number | 3KW220V | | Power Source | AC (220 VAC) | | Recommended Uses For Product | Home | | Voltage | 220 Volts | | Wattage | 3 KW | ## Product Details - **Brand:** QNK - **Recommended Uses For Product:** Home - **Power Source:** Battery Powered - **Wattage:** 3 KW - **Battery Capacity:** 14 Amp Hours ## Images ![QNK 3KW 4HP 220V AC 14A VFD Converter Single to 3 Phase Inverter Variable Fre... - Image 1](https://m.media-amazon.com/images/I/61774+n4WnL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works beautifly. *by J***. on January 10, 2025* Needed this to control a new motor for my lathe to give me variable speed without moving the drive belt (DIY upgrade). The instructions on how to program it are pretty good - no trouble following them. Combined with an RPM sensor, I have exactly what I need. ### ⭐⭐⭐⭐⭐ Works great, and easy setup. *by J***6 on April 30, 2026* Works great! --- ## 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.jp/products/740359733-qnk-3kw-4hp-220v-ac-14a-vfd-converter-single-to](https://www.desertcart.jp/products/740359733-qnk-3kw-4hp-220v-ac-14a-vfd-converter-single-to) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-21*