Professional VFD Solutions & MPPT Solar Pump Inverters
0.75–800kW Industrial VFD, AC Drive & MPPT Solar Pump Inverter Manufacturer | Factory Direct to 50+ Countries
More than VFDs — engineering support based on real project requirements
CE Certified | 100% Full-Load Tested | OEM from 50 Units | 18-Month Warranty
Industrial VFD
Three-phase & single-phase variable frequency drives for pumps, fans, conveyors, CNC machines, HVAC, and heavy industry. 0.75kW to 800kW.
MPPT Solar Pump Inverter
PV-dedicated VFD with MPPT/CVT dual-mode solar tracking. Drive water pumps directly from solar panels — no batteries, no grid required.
See SHZK in Action
From company overview to manufacturing details — experience our quality firsthand
Company Overview
Learn about SHZK’s mission, capabilities, and global reach
UV Conformal Coating Process
Precision coating ensures durability and reliability in harsh environments
Our Most Popular Products
Factory-direct VFDs certified to international standards (CE, RoHS, LVD), built & 100% full-load tested in our own production line. OEM from 50 units, backed by an 18-month warranty and real engineering support on every project.
- 300N T4 Series — Three Phase 380-480V
- 300N S2 Series — Single to Three Phase 220V
- 300N S3 Series — Single Phase 220V In
- 300N H2 Series — Single Phase 220V In
- MPPT Solar Pump Inverter — PV Direct Drive
- ZK Series Intelligent Soft Starter
Why Use a Variable Frequency Drive (VFD)?
Variable frequency drives (VFDs) are commonly used to control motor speed based on actual load demand. By adjusting motor output, they help improve system efficiency, reduce mechanical stress, and maintain stable operation across applications such as HVAC systems, pumps, and industrial machinery.
Sensorless Vector Control
Provides stable speed and torque regulation without requiring encoder feedback. Reliable operation is maintained even when load conditions change.
Smart Protection Logic
Multiple protection functions monitor abnormal voltage and fault conditions in real time. Thermal monitoring shuts the system down before damage occurs.
Modbus RS485 Communication
Remote monitoring and data exchange are supported through RS485 communication, allowing connection with external control systems.
Energy Efficient Operation
When load demand changes, motor output adjusts accordingly to reduce unnecessary power consumption in fan and pump applications.
Digital Keypad Interface
Simple parameter setup and real-time operating status are available through the keypad interface, helping reduce commissioning time.
Compact Modular Design
A compact modular structure fits easily into standard electrical cabinets and supports both new installations and retrofit projects.
Why Choose SHZK
Trusted by industrial customers worldwide for quality, reliability, and value
Premium IGBT Core
High-quality IGBT power module with SVPWM control technology, ensuring stable output and long service life.
6-Fold Protection
Comprehensive protection against over-current, over-voltage, under-voltage, over-heat, overload, and short-circuit.
UL94 V-0 Housing
Flame-retardant enclosure rated UL94 V-0 for maximum operational safety in industrial environments.
Factory Direct
Manufactured in Yueqing, China with 10+ years of VFD expertise. Competitive factory-direct pricing with no middleman.
Fast Delivery
Standard models in stock for immediate shipment. Custom orders fulfilled within 7–15 business days.
Technical Support
Complete documentation package including wiring diagrams, parameter manuals, and application guides for every model.
VFD Application Guide
SHZK Variable Frequency Drives efficiently control AC motors and PMSM motors across a wide range of industrial and commercial applications—crane systems, fresh air ventilation, water pumps, and food processing machinery—delivering precise speed control, energy savings, and reliable performance.
Choose the right VFD model based on your specific application requirements.
Belt Conveyor
Belt conveyors require smooth acceleration to reduce belt slippage and mechanical impact during startup. Adjustable speed control matches the conveying rate to production requirements, improving efficiency and reducing mechanical wear.
Electric Wire Rope Hoist
Wire rope hoists need controlled acceleration and deceleration for stable lifting. Sudden starts and stops create mechanical stress and load swing. A VFD reduces impact on components and improves positioning accuracy during repeated lift cycles.
Centrifugal Water Pump
Centrifugal pumps run under changing demand. Continuous full-speed operation wastes energy. Matching motor speed to demand via VFD cuts power use, maintains stable flow, and reduces pressure spikes that cause pipeline stress and water hammer.
Rotary Screw Air Compressor
Screw compressors run long shifts while air consumption varies. Speed adjustment based on real-time demand reduces idle losses and improves energy efficiency, while stable pressure protects downstream pneumatic equipment.
HVAC Fan
HVAC fans face continuously changing airflow demand. Constant-speed running wastes energy; speed adjustment matches airflow to actual ventilation needs, improving comfort and cutting operating costs while reducing duct vibration.
Our engineers will help you match the right drive to your application
Model Comparison
Complete range of Variable Frequency Drives for every industrial application
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| Parameter | 300N T4 | 300N S2 | 300N S3 | 300N H2 |
|---|---|---|---|---|
| Application | General Machinery / Conveyor | Small Motor / Light Load | Pump / Fan | Crane & Hoist |
| Power Range | 0.75 – 800 kW | 0.75 – 5.5 kW | 0.75 – 18.5 kW | 0.75 – 3 kW |
| Input Voltage | 3PH 380V | 1PH 220V | 1PH 220V | 1PH 220V |
| Output Voltage | 3PH 380V | 3PH 220V | 3PH 380V | 1PH 220V |
| Control Mode | V/F, SVC, FVC | V/F, SVC | V/F, SVC, FVC | V/F, SVC |
| Communication | Modbus RTU | Modbus RTU | Modbus RTU | Modbus RTU |
| Output Frequency | 0 – 500 Hz | 0 – 400 Hz | 0 – 400 Hz | 0 – 400 Hz |
SHZK VFD Solutions
Solutions for every motor-control & pumping application — factory-direct drives engineered for energy efficiency, reliability, and long service life in demanding industrial environments.
Professional VFD, AC Drive & Frequency Inverter Solutions
SHZK is a leading variable frequency drive (VFD) and AC drive manufacturer from China, specializing in frequency inverters and motor speed controllers for industrial applications worldwide. Our product range covers 0.75kW to 800kW, serving customers in Southeast Asia, Middle East, South Asia and beyond.
VFD Applications
Power Ratings
Regions We Serve
- VFD Supplier in UAE / Dubai
- VFD Supplier in Saudi Arabia
- VFD Supplier in Philippines
- VFD Supplier in Pakistan
- VFD Supplier in Southeast Asia
Featured Projects
Proven track record in delivering reliable power solutions for industrial and renewable energy applications
New Energy Technology — Solar PV Power Generation Solutions
Industrial PV Substation Installation — Reliable Power Distribution
What Our Customers Say
Real results from real industrial users around the world
Our maintenance tech went through two drives in 3 months with the old brand. A total headache. Been running the SHZK 300N T4 800kW for over a year now — no problems at all.
We’ve been using the SHZK 300N on our fans and pumps for over a year now. Energy consumption is down by 25%, and the electricity bill has dropped by 20%. Paid for itself in under 18 months. Planning to add more next quarter.
Our control cabinet was already packed and we really didn’t have room left for anything bigger. The SHZK 300N H2 is small enough that we squeezed it into the last bit of space. For a small conveyor motor that’s all we needed. Been running fine so far.
Need Technical Help?
Real fault codes, wiring and parameter guidance from the engineers who build and full-load test every SHZK drive
Fault Codes (Err01–71)Full alarm-code list with cause and fix.
Overcurrent FaultErr02/03/04 diagnosis and fix.
Overvoltage FaultErr05/06/07 and brake resistor.
Wiring GuideMain circuit and control terminals.
Parameters & TuningSetup and motor auto-tuning.
VFD FAQ20 most-asked questions.
Soft Starter TechZKRZ-N wiring, terminals & fault codes E01–E12.
Engineering Track Record
SHZK is a factory-direct manufacturer of VFDs, solar pump inverters and motor soft starters. From a single CE-certified drive to OEM production, every unit is 100% full-load tested before shipping — and backed by real engineering support based on your actual project requirements.
VFD & Solar Pump Applications
The Latest News
VFD Selection & Application
Engineering Support
Need help choosing the right variable frequency drive for your motor, pump, or HVAC system? Our engineering team clarifies project requirements, supports drive and filter selection, and assists with special operating conditions.
Send us your project details & operating parameters, and an SHZK application engineer will reply with practical, application-focused advice.
Request Engineering Support
Typical info: motor power & voltage, phase, application, operating parameters or drawing (if any)