Frequency Inverter

View as Grid List

Sort by

Display per page

0.4 kW Single Phase Output Frequency Inverter

GK3000-1S0004

0.4 kW frequency drive for sale, capacity 1/2hp, rated current 4A, input frequency 47~63Hz. Equipped with an LED screen, the frequency drive inverter has built-in heat-dissipation aluminum fins with excellent heat-dissipation performance. With humidity 90%RH, single phase inverter operating temperature (-10℃, 40℃). The single phase output frequency drives are widely used to control the speed of motors in various equipment such as pumps, ventilation systems, elevators, machine tool drives, etc.

$162.46

0.4 kW Single Phase to Three Phase Frequency Inverter

GK3000-2S0004

0.4kw frequency inverter for sale, convert single phase to three phase for AC motor speed controls, rated current 3A, input frequency 50Hz~60Hz, and output frequency 0Hz~1000Hz. With an IP20 enclosure rating and RS485 communication mode, the inverter can work at (–10℃, 40℃). The variable frequency drive single phase to 3 phase is usually applied in CNC machine tools, water pumps, fans, air conditioners, washing machines, etc.

$149.10

0.75kw Frequency Inverter, Single Phase 120V Input, 1ph/3ph 220V Output

GK3000-SP1S1-d75

1hp (0.75kw) frequency inverter, single phase 120v input, 1 phase and 3 phase 220v output. Come with a V/F control mode, the variable frequency drive inverter drives 1ph/3ph AC motor with 120v power supply, and offers an RS485 communication interface. Frequency inverters 50hz to 60hz can work at (–10℃, 40℃), and the Interior PID controller is convenient to make a closed-loop system. The variable frequency drive inverter is widely applied in industrial manufacturing, transportation, energy, construction, etc.

$284.61

1.5kw Frequency Inverter, Single Phase 120V Input, 1ph/3ph 220V Output

EM15-SP1S1-1d5

1.5kw frequency drive inverter, single phase 120v input, single phase and three phase 220v output. 2hp variable frequency drive inverter can drive single/three AC motors with 120v power. Rated current 7 A, 50Hz/60Hz input, and V/F control mode. It offers an RS485 communication interface and supports the MODBUS-RTU communication protocol. Come with IP20 protection, the variable frequency inverter works at (–10℃, 40℃). The interior PID controller of the frequency inverter is convenient for making a closed-loop system.

$315.38

2.2kw Frequency Inverter, Single Phase 120V Input, 1ph/3ph 220V Output

GK3000-SP1S1-2d2

2.2 kW (3 hp) frequency drive inverter, single phase 120v input, single phase and three phase 220v output, with IP20 protection and RS485 communication interface. 3 hp variable frequency drive inverter can run 1ph/3ph AC motor via 120v power supply, work at (–10℃, 40℃). Equipped with an intelligent cooling fan, the 2.2kw frequency drive inverter with automatic voltage regulation can keep constant output voltage when power source voltage varies.

$346.10

0.75 kW Single Phase Output Frequency Inverter

GK3000-1S0007

0.75kW single phase output frequency inverter for sale, 1-phase input to 0~input voltage 1-phase output at 220V/230V/240V. Rated current 7A, input voltage single phase AC 220 ± 15%, and output voltage 1 phase. High-frequency inverter with output frequency 0~1000Hz has start frequency 0.40Hz~20.00Hz. Widely used in refrigeration systems, industrial equipment and mechanical engineering.

$195.82

4kw Frequency Inverter, Single Phase 120V Input, 1ph/3ph 220V Output

GK3000-SP1S1-004

4kw frequency drive inverter, single phase 110v-120v input, 1ph/3ph 220v-240v output, which drives AC motor via 120v power supply. RS485 communication interface, input frequency 50Hz/60Hz. With V/F control mode, the 5hp variable frequency inverter's start torque is 150% of the rating torque at 1 Hz. The variable frequency drive inverter with high-frequency precision, digital setting: max frequency x± 0.01%; analog setting: max frequency x± 0.2%.

$392.35

0.75 kW Single Phase to Three Phase Frequency Inverter

GK3000-2S0007

0.75kw frequency drive inverter for sale, convert single phase to three phase for AC motor speed controls, rated current 4A, speed regulation 1:100. With IP20 protection, variable frequency drive single phase to 3 phase has RS485 communication mode, and PID controller is convenient to make closed-loop system. The single phase to 3 phase inverter is usually applied in motor, pump, electric equipment and so on.

$159.32

5.5kw Frequency Inverter, Single Phase 120V Input, 1ph/3ph 220V Output

GK3000-SP1S1-5d5

5.5 kw variable frequency drive for sale, 120v input single phase, 220v output 1/3 ph, drives AC motor by 110v/120v power. Come with V/F control and RS485 communication mode, 7.5hp variable frequency inverter can work at (–10℃, 40℃), and interior PID controller of the frequency inverter is convenient to make closed-loop system. High precise speed regulation reaches 1:100 and start torque up to 150% of rating torque at 1 Hz. It is widely used in automated plant control, aerospace, building construction, renewable energy.

$453.86

0.75 kW Frequency Inverter, 3 Phase 240V, 415V, 480V

GK3000-4T0007G

Affordable price 0.75kw (1 hp) frequency drive inverter, 3 phase inverter 240V, 415V, 480V to be optioned. Rated current 21A at 380v~ 480V, 3.8A at 220V~240V. 3 phase inverter with sensorless vector control can work at (–10℃, 40℃). Come with RS485 communication mode, vfd inverter 3 phase has IP20 enclosure rating.

$206.49

1.5 kW Single Phase Output Frequency Inverter

GK3000-1S0015

1.5kW 2 hp single phase output frequency inverter with favorable price, Rated current 9.6A, output frequency 0~ 1000Hz. 1-phase 220v, 230v, 240v 50 Hz/60 Hz input, single phase 0-220v output. Equipped with a cooling fan, the variable frequency inverter shell is made of solid material and has good heat dissipation performance. The single phase inverter can work at (-10℃, 40℃), and the LED screen can monitor value changes in real-time.

$243.08

1.5 kW Single Phase to Three Phase Frequency Inverter

GK3000-2S0015

1.5kw variable frequency inverter, converting single phase to 3 phase, rated current 7 A, input voltage 1 phase 220V AC ±15%. With RS485 communication mode, inverter single phase to three phase has an input frequency of 50Hz/ 60Hz, and speed regulation reaches 1:100. Come with IP20 enclosure protection, variable frequency drive single phase to 3 phase is widely applied in motor, pumps, and fans.

$183.16

1.5 kW Frequency Inverter, 3 Phase 230V, 400V, 480V

GK3000-4T0015G

1.5kw variable frequency inverter for sale, vfd inverter 3 phase 230V, 400V, 480V, rated current 3.8A at 380V ~ 480V, 5.1A at 220V ~ 240V. Control mode includes V/F or sensorless vector. Come with an IP20 enclosure rating, 3 phase variable frequency drive has cooling fans to keep the interior temperature. and power a wide variety of equipment, such as three-phase motors, pumps, and fans.

$218.41

2.2 kW Single Phase Output Frequency Inverter

GK3000-1S0022

2.2kW 3hp frequency inverter with rated current 17A for sale, input voltage single phase AC 220V±15%, input frequency 47~63Hz. With a start frequency of 0.4Hz~20.00Hz, the inverter's speed adjustment range reaches 1:50. By changing the frequency and voltage supplied to the motor, the variable frequency inverter can achieve stepless speed regulation of the motor.

$379.23

2.2 kW Single Phase to Three Phase Frequency Inverter

GK3000-2S0022

2.2kw frequency drive inverter for sale, converting single phase to 3 phase, IP20 enclosure rating, RS485 communication. Rated current 9.6A, input voltage 1 phase 220V AC ±15% and output voltage 3 phase AC 0~input voltage. The single phase to 3 phase inverter work at (–10℃, 40℃), humidity 5%-95%.

$238.14

2.2 kW Frequency Inverter, 3 Phase 208V, 380V, 480V

GK3000-4T0022G

2,2kw 3 phase inverter, variable frequency inverter 208V, 380V, 480V. Equipped with IP20 enclosure protection, the vfd inverter 3 phase has strong impact resistance and high safety performance. With RS485 communication, the PID controller of frequency drive inverter is convenient to make closed-loop system. Easy to install and use.

$280.48

3.7 kW Single Phase Output Frequency Inverter

GK3000-1S0037

3.7kW inverter with rated current 25A, input frequency 47~63Hz, starting frequency 0.40Hz~20.00Hz. With 220/230/240V AC single phase input for household supply, single phase output to drive single phase asynchronous motors.Equipped with an LED display, a 5 hp VFD driver can display real-time changes in data. The sturdy housing material and cooling fan enhance the inverter's heat dissipation capacity. Frequency inverter is usually used to control the speed of motors precisely.

$649.59

3.7 kW Single Phase to Three Phase Frequency Inverter

GK3000-2S0037

3.7kw variable frequency inverter for sale, converting single phase to three phase, apply for motors, pumps, washing machines, refrigerators, fans, and so on. Come with RS485 communication mode and IP20 enclosure protection, single phase to 3 phase inverter works at (–10℃, 40℃). The shell is hard and can protect the internal components of the inverter.

$294.31

3.7 kW Frequency Inverter, 3 Phase 220V, 380V, 480V

GK3000-4T0037G

Favorable price 3.7 kW vfd inverter, 3 phase variable frequency drive 220V, 380V, 480V. Input frequency 50Hz/ 60Hz, output frequency 0~1000Hz, current vector control, and V/F control mode for 3 phase motor speed control. With RS485 communication mode, the frequency drive inverter has an IP 20 enclosure rating, durable and rugged.

$293.51

5.5 kW Single Phase Output Frequency Inverter

GK3000-1S0055

5kw (7.5 hp) frequency drive inverter for sale, single phase inverter with rated current 32A, 1 phase input to single phase output. Input voltage single phase AC 220V±15%, output voltage 1 phase 0～rated input voltage. Equipped with an LED display and cooling fan, the 5.5kw frequency inverter's speed adjustment range reaches 1:50. The variable frequency inverters are widely applied in power industrial, chemical industrial, oil extraction, and so on.

$996.86

A frequency inverter — also called a variable frequency drive (VFD) or AC drive — controls the speed of an AC motor by adjusting the frequency and voltage of its power supply. Rather than running a motor at fixed speed, a VFD lets you set precise RPM for your application, cutting energy use by up to 50% compared to direct-on-line starting.

Internally, a frequency inverter works in three stages: a rectifier converts incoming AC to DC, a DC bus filters and stores that energy, and an inverter stage converts it back to AC at the target frequency. This AC-DC-AC process enables variable-speed control without mechanical components.

Inverter.com offers frequency inverters from 0.4kW to 220kW across four input/output configurations: single-phase in/out, single-phase to three-phase, three-phase to three-phase, and 120V input models for the North American market. All in-stock units ship from our Los Angeles warehouse.

The Difference between a Power Inverter and a Frequency Inverter

A power inverter and a frequency inverter serve fundamentally different purposes, even though both deal with AC power.
A power inverter converts DC input — from a battery, solar panel, or other DC source — into AC output at a fixed frequency (50 Hz or 60 Hz depending on region). It is used to run household appliances or equipment from a DC power source when grid power is unavailable.
A frequency inverter (VFD) takes AC input and outputs AC at a variable frequency and voltage, allowing precise control of motor speed. It does not change DC to AC — it reshapes AC to AC through a three-stage process: rectification (AC to DC), DC bus filtering, and inversion (DC back to AC at the target frequency).
The key distinction: a power inverter is an energy source converter; a frequency inverter is a motor speed controller.

Difference	Power Inverter	Frequency Inverter (VFD)
Input	DC (battery/solar)	AC (grid power)
Output	AC at fixed frequency (50/60 Hz)	AC at variable frequency (0–400 Hz)
Primary Uses	Run AC devices from a DC source	Control AC motor speed & torque
Working Principle	DC → AC	AC → DC → AC (AC-DC-AC)
Tipical Applications	Off-grid power, vehicle power	Pumps, fans, CNC, conveyors

Why Choose a Frequency Inverter?

Adjustable torque limit: A VFD lets you set a precise torque ceiling to protect motors from overload — control accuracy typically reaches ±3–5%, far tighter than thermal protection alone.
Energy savings up to 50%: Fan and pump loads follow the Affinity Laws — reducing motor speed by 20% cuts power consumption by nearly 50%. A VFD eliminates the wasted energy of throttling valves and dampers.
Controllable stopping mode: VFDs support multiple deceleration profiles (ramp-to-stop, free-coast, DC braking) — reducing mechanical stress on motors and extending equipment service life.
Reversible operation control: Reversing motor direction requires only a phase-sequence change in software, with no additional contactors or mechanical reversing switches needed.
Reduce mechanical transmission: When combined with synchronous motors, vector-controlled VFDs eliminate gearboxes and mechanical couplings, reducing system footprint and maintenance requirements.

How to Select a Frequency Inverter?

Input voltage and phase: Match the VFD's input voltage and phase configuration to your available power supply. Size the VFD's rated current at least 10% above the motor's nameplate current — but avoid oversizing beyond one step, which adds cost without improving control accuracy.
Load type: For constant-torque loads (hoists, compressors, extruders), choose a heavy-duty rated VFD and verify the drive's overload capacity — typically 150% for 60 seconds. For variable-torque loads (fans, pumps), standard duty is sufficient.
Braking requirements: If your application involves frequent start/stop cycles or requires holding a load in position (hoists, cranes), look for a VFD with a built-in braking unit or dynamic braking resistor support. Regenerative braking recovers energy but adds upfront cost.
Sensor and PID support: Applications like pumps and HVAC systems benefit from VFDs with built-in PID control, which can close the loop directly with a pressure or temperature sensor — eliminating a separate controller and reducing wiring complexity.
Communication ports: For SCADA integration or PLC control, verify the VFD supports the required protocol — RS-485/Modbus is standard; some applications require CANopen or Profibus. All GK3000-series VFDs include RS-485 Modbus as standard.
Environment rating: Check the VFD's IP rating against your installation environment. Standard IP20 suits clean indoor panels; washdown or outdoor installations require IP54 or higher. Operating temperature range and altitude derating should also be confirmed before ordering.