0.4 kW Mini VFD, Single to 3 Phase, Non-Enclosure

$137.68

| 0 review(s) | Add your review

Rated at 3A, this 0.4 kW (1/2 hp) mini VFD runs small three-phase motors from a standard 220–240V single-phase supply, with 1:100 speed regulation and 150% starting torque at 1Hz. It is supplied as an open-frame board (151 × 104 × 73mm, 665g) for mounting in your own control cabinet, where several drives can sit side by side. Built-in PID, automatic energy-saving mode, and RS-485 communication.

Free shipping

Delivery date: 6-12 days

SKU: GK3300-2S0004

increase decrease

Overview
Details
FAQ
Reviews

Overview

The product is the 0.4 kW rating of our non-enclosure mini VFD range. It ships without a housing, so the host cabinet provides the protection, and the drive adds only a small board to the panel layout. Its compact, lightweight build lets you house several drives in one cabinet.

It suits small fans, pumps, and light-duty machine drives where the motor is rated up to 0.4 kW, and the available supply is single-phase. Install it inside a closed cabinet that keeps out dust, moisture, and accidental contact. Keep the ambient temperature between –10℃ and +40℃; above 40℃, derate output by 5% per 1℃, and derate at altitudes above 1000m.

Specifications

Basics	Model	GK3300-2S0004
	Capacity	0.4 kW (1/2 hp)
	Shipping Weight	665 g
	Dimension	(15110473) mm
I/O Feature	Rated Current	3 A
	Input Voltage	1-phase 220~240V AC
	Input Frequency	50Hz/ 60Hz
	Output Voltage	3-phase AC 0~input voltage
	Output Frequency	0Hz~1000Hz
	Overload Capacity	150% of rated current for 1 minute, 180% of rated current for 3 seconds
Control Feature	Control Mode	V/F control
	Control Mode	Sensorless vector control
	Communication	RS485
	Speed Regulation	1:100
	Start Torque	150% of rated torque at 1 Hz
	Speed Control Accuracy	≤±0.5% of rated synchronous speed
	Frequency Precision	Digital setting: max frequency x ±0.01%
	Frequency Precision	Analog setting: max frequency x ±0.2%
	Frequency Resolution	Analog setting: 0.1% of max frequency
	Frequency Resolution	Digital setting: 0.01Hz
	Torque Boost	Automatic torque boost, manual torque boost 0.1%~30.0%
	Interior PID Controller	Convenient for making a closed-loop system
	Automatic Energy-Saving Running	Optimizes the V/F curve automatically based on the load to achieve power-saving running
	Automatic Voltage Regulation (AVR)	Can keep constant output voltage when power source voltage varies
	Automatic Current Limiting	Limits running current automatically to avoid frequent overcurrent, which will cause tripping
Environment	Enclosure Rating	Open frame, no enclosure — install inside a protective cabinet
	Temperature	–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
	Humidity	5%~95%, without condensation
	Altitude	≤1000m; VFD will be derated if above 1000m
	Impingement and Oscillation	Normal running:<5.9m/s^² (0.6g); Transportation:<15m/s^² (1.5g)
	Store Environment	–20℃ to +60℃; no dust, no corrosive gas, no direct sunlight

Note: inverter.com VFD Cannot be used as a power source; it Can only be directly connected to an induction motor to control the motor speed.

Details

Power Terminals

The single-phase supply and the three motor leads connect at the power terminals along the bottom edge of the board. At a rated current of 3A, size the conductors for at least that load and follow local electrical code. Use ferrules on stranded wire, and route power cables away from signal cables to limit interference.

Aluminum Heatsink

The aluminum heatsink releases the drive's heat into the cabinet air. The 0.4 kW model carries 3A, almost twice the current of the 0.2 kW model, so thermal planning matters more. Mount the board upright, leave clear space around the heatsink, and keep it away from other heat sources inside the cabinet.

Control Board

The control terminals carry the signal-level connections: digital inputs, analog speed reference, and RS-485. Keeping signal wiring on these terminals, separate from the power terminals, lets you run the drive from a local switch, a speed-setting signal, or a PLC. Use shielded cable for long signal runs, and route it away from the power and motor leads.

Features

3A Output for 0.4 kW Motors: Drives three-phase induction motors up to 0.4 kW (1/2 hp) from single-phase 220–240V, with 150% overload for 1 minute and 180% for 3 seconds to ride through loaded starts.
Cabinet-Friendly Open Frame: The (151 × 104 × 73)mm, 665g board needs no housing of its own, and several drives can be installed in one cabinet.
Energy-Saving and Protection Functions: Automatic energy-saving mode adjusts the V/F curve to the load. The AVR holds the output voltage steady when the supply varies, and automatic current limiting reduces overcurrent trips.
Strong Low-Speed Torque: 150% starting torque at 1 Hz, with automatic or manual torque boost (0.1%–30.0%), and speed accuracy within ±0.5% in sensorless vector mode.
Modbus Multi-Drive Control: RS-485 lets a PLC or host controller start, stop, and edit parameters on several drives together instead of one at a time.

Use Cases

Pumps with Stop Interlocks: Small circulation and transfer pumps can use a float or pressure switch on a digital input to stop the drive, and adjustable speed ramps avoid hard starts.
Fans and Blowers: Ventilation and exhaust fans on a 0.4 kW motor can run at reduced speed, and the power they draw falls steeply as speed drops.
Light-Duty Conveyors and Feeders: Strong low-speed torque keeps belts and feeders moving smoothly at slow speeds without stalling.
Multi-Drive OEM Cabinets: Several small drives can sit side by side in one panel and be commanded together over Modbus, which suits multi-motor machines and production lines.

Application Scenarios

Packaging Machinery

Non-enclosure mini VFD for texile and garment machinery

Textile & Garment Machinery

Printing Machinery

Non-enclosure mini VFD for pharmaceutical and food machinery

Pharmaceutical & Food Machinery

FAQ

Q1: Which motors can I connect to this 0.4 kW VFD?

Use a three-phase induction motor rated 0.4 kW (1/2 hp) or less, wired for 220–240V, with a rated current within 3A. Output voltage rises from 0 up to the input voltage, so the drive cannot supply a motor that needs 380V or 460V.

Q2: Can I install and control several of these drives together?

Yes. The open-frame board is small enough for several units to share one cabinet, and RS-485 Modbus allows a host controller to start, stop, or change parameters on multiple drives at once. Leave clearance around each heatsink so heat can escape, and derate output if cabinet temperature rises above 40℃.

Q3: When should I choose this model over an enclosed single-to-three-phase VFD?

Choose this model when your equipment already provides an enclosure and panel space is limited. The enclosed single- to three-phase frequency inverters come in a finished housing for standalone mounting, so they suit installations where the drive is mounted on its own.

Write your own review

Review title: *

Review text: *

Rating:

1 2 3 4 5