Key facts
- Power range: 0.75 kW to 18.5 kW
- Input: single-phase 220V (200-240V); output: three-phase 380V
- Converts a single-phase 220V supply into a three-phase 380V motor supply
- Control: sensorless vector control (SVC) and V/F control, built-in PID and multi-speed / simple PLC
- Communication: Modbus RTU over RS485; enclosure IP20 standard, IP54 optional
- Certifications: CE (EU LVD 2014/35/EU and EMC 2014/30/EU), ISO 9001:2015, RoHS
- OEM/ODM supported (logo, packaging, voltage, firmware); sample orders accepted
- Factory: Yueqing, Zhejiang, China; contact mail@shzkvfd.com or WhatsApp +86 13757750205
300N S3 Series – Single Phase 220V Input / Three Phase 380V Output
The 300N S3 Series converts single-phase 220V input to three-phase 380V output, providing a cost-effective solution for running three-phase 380V motors where only single-phase power is available.
Key Features
- Output Frequency: 0-500Hz
- Overload Capacity: 150% rated current for 1 minute, 180% for 3 seconds
- Control Method: Optimized SVPWM control
- Control Mode: Sensorless vector control
- Frequency Resolution: Digital 0.01Hz; Analog max frequency ×0.025%
- Automatic torque boost: 0.1%-30.0%
- Built-in PID closed-loop control
- Multi-speed operation via built-in PLC
- RS485 communication support
- Comprehensive protection functions
Model Specifications
| Model | Rated Current | Dimensions (H×W×D mm) | Shell Type |
|---|---|---|---|
| 300N-0.75PB-S3 | Input 8A / Output 2.5A | 165×98×128 | Plastic (S) |
| 300N-1.5PB-S3 | Input 14A / Output 3.8A | 165×98×128 | Plastic (S) |
| 300N-2.2PB-S3 | Input 23A / Output 5.1A | 165×98×128 | Plastic (S) |
| 300N-003PB-S3 | Input 27A / Output 7.2A | 165×98×128 | Plastic (S) |
| 300N-004PB-S3 | Input 39.7A / Output 9A | 187×100×137.5 | Plastic (S) |
| 300N-5.5PB-S3 | Input 41.3A / Output 13A | 187×100×137.5 | Plastic (S) |
| 300N-7.5PB-S3 | Input 44A / Output 17A | 220×130×177.5 | Plastic (S) |
| 300N-011PB-S3 | Input 59A / Output 25A | 220×130×177.5 | Plastic (S) |
Y-Series Black Enclosure Option
The same 300 S3 Series (single-phase 220V to three-phase 380V) is also available in the Y-series black-enclosure variant with its own model lineup — identical electrical performance in a black-moulded housing. Ratings & dimensions below.
| Model | Rated Current | Dimensions (H×W×D mm) | Shell Type |
|---|---|---|---|
| 300-0.75KWG-S3 | In 4.5A / Out 2.5A | 164×88×125 | Plastic (Y Black) |
| 300-1.5KWG-S3 | In 8A / Out 3.7A | 164×88×125 | Plastic (Y Black) |
| 300-2.2KWG-S3 | In 12A / Out 5A | 164×88×125 | Plastic (Y Black) |
| 300-3KWG-S3 | In 15A / Out 6.8A | 164×88×125 | Plastic (Y Black) |
| 300-4KWG-S3 | In 18A / Out 9A | 184×97×135 | Plastic (Y Black) |
| 300-5.5KWG-S3 | In 25A / Out 13A | 184×97×135 | Plastic (Y Black) |
| 300-7.5KWG-S3 | In 34A / Out 17A | 219×95×171 | Plastic (Y Black) |
| 300-11KWG-S3 | In 50A / Out 25A | 219×95×171 | Plastic (Y Black) |
Full Y-series black-enclosure selection details: Download the 300 Y-Series Black Enclosure Selection Manual (PDF)
Enclosure Options — S / Y / D / Z
This series offers four enclosure styles — S, Y, D and Z. For ratings up to 11 kW, all four are made of durable plastic housing, and the drive electronics inside are identical — only the housing shape, form factor and dimensions differ, so you can pick the enclosure that best fits your installation.
Compact Enclosure
Compact, lightweight plastic housing for small power ratings — ideal for tight panel spaces.
Black Enclosure
Black plastic moulded housing — a clean, discreet look with identical performance.
Rugged Plastic Enclosure
Robust, rugged plastic enclosure with a sturdy industrial appearance.
Standard Enclosure
Standard plastic housing for ratings up to 11 kW with consistent performance.
Enclosure selection manuals (dimensions, panel cut-outs & terminals):
Electrical Specifications
| Power Range | Input Voltage | Output Voltage | Output Frequency |
|---|---|---|---|
| 0.75kW – 18.5kW | Three Phase 380V 50/60Hz | Three Phase 0-380V | 0-500Hz |
Why Choose 300N S3 Series?
Drive standard 380V three-phase motors from a regular 220V single-phase outlet — perfect for workshops without 3-phase supply.
Variable speed matches actual process demand. Payback typically within 12 months for pump and fan applications.
0.01Hz frequency resolution and sensorless vector control deliver smooth spindle speed for CNC machines.
Pre-configured V/F curves for common applications. Most setups running within 30 minutes.
Quick Selection Guide — S3 Series
| Your Application | Recommended Model | Key Tip |
|---|---|---|
| CNC Machine Spindle | G Type | Add braking unit for fast deceleration |
| Small Water Pump | P Type | PID pressure control; soft start protects pipes |
| Workshop Fan / Exhaust | P Type | Variable torque; multi-speed for shift changes |
| Mixed Loads | G Type | Safe default for unknown load types |
Quick Specs at a Glance
| Input Voltage | 1PH AC 200V ~ 240V |
| Output Voltage | 3PH AC 0 ~ 440V |
| Power Range | 0.75kW – 18.5kW |
| Output Frequency | 0 – 600Hz |
| Control Mode | Sensorless Vector / V/F |
| Overload Capacity | G: 150%/60s, P: 120%/60s |
| Best For | Driving standard 380V motors from 220V single-phase supply |
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Output Frequency | 0-500Hz |
| Carrier Frequency | 1.0-15.0kHz, automatically adjusts based on temperature and load |
| Control Method | Optimized space voltage vector SVPWM control |
| Control Mode | Sensorless vector control with optimal low-frequency dead zone compensation |
| V/F Control | Linear, multi-point, square root (selectable) |
| Frequency Resolution | Digital setting: 0.01Hz; Analog setting: max frequency × 0.025% |
| Starting Frequency | 0.0-10.0Hz |
| Starting Torque | 0.5Hz / 180% (Sensorless Vector Control); 1Hz / 180% (V/F) |
| Torque Boost | Automatic torque boost; Manual torque boost 0.1%-30.0% |
| Speed Control Accuracy | ±0.5% of maximum speed (Sensorless Vector Control) |
| Speed Adjustment Range | 1:100 (Sensorless Vector Control) |
| Overload Capacity (G-type) | 150% rated current for 1 minute, 180% rated current for 3 seconds |
| Overload Capacity (P-type) | 120% rated current for 60 seconds, 150% rated current for 10 seconds |
| Acceleration/Deceleration | Linear or S-curve, 4 sets of accel/decel time (0.1-3600s) |
| DC Braking | DC braking at start and stop |
| Jog Operation | Jog frequency: 0.0Hz to max frequency; Jog accel/decel time: 0.1-3600s |
| Built-in PID | Closed-loop control for pressure, flow, temperature regulation |
| Multi-speed Operation | Up to 16-speed via built-in PLC or control terminals |
| Run Command Channel | Control panel, control terminals, RS485 communication |
| Frequency Setting | Digital keypad, analog input (AI1/AI2), RS485, multi-speed, simple PLC, PID |
| Digital Input | 5 programmable digital inputs (DI1-DI5), DI5 supports 20kHz high-speed pulse input |
| Analog Input | 2 channels (AI1, AI2): 0-20mA / 0-10V selectable |
| Analog Output | 2 channels (AO1, AO2): 0-20mA or 0-10V selectable |
| Relay Output | 2 relays: NO/NC, rated AC250V 3A / DC30V 1A |
| Communication | RS485 Modbus RTU (standard) |
| Protection | Overcurrent, overvoltage, undervoltage, overheat, overload, input/output phase loss, motor overheat (PTC), ground fault |
| Display | LED display showing set frequency, output frequency, output voltage, output current, etc. |
| Operating Temperature | -10°C to +50°C (derating above 40°C) |
| Storage Temperature | -20°C to +60°C |
| Humidity | ≤95% RH, non-condensing |
| Altitude | ≤1000m (derate 1% per 100m above 1000m) |
| Protection Degree | IP20 (standard); IP54 available on request |
| Installation | Wall mount or flange mount |
| Cooling | Forced air cooling |
| Quality Assurance | 100% full-load aging test before shipment |
Model Naming Convention
SHZK 300N models follow a standardized naming system for easy identification:
300N-055GB-T4
| Position | Code | Description |
|---|---|---|
| Series | 300N | 300N Series |
| Motor adapter power | 0.75 / 1.5 / 2.2 / 5.5 / 7.5 / 18.5 | Decimal ratings are written as-is, in kW |
| 003 / 011 / 055 / 800 | Whole-number ratings use three digits: 003 = 3 kW, 011 = 11 kW, 055 = 55 kW, 800 = 800 kW | |
| Full range | 0.75 kW – 800 kW across the 300N platform | |
| Motor type | G | Heavy load (constant torque) — standard industrial drives |
| P | Fan / pump type (light duty) — used on S3 models | |
| PV | Photovoltaic DC input with CVT / MPPT tracking — PV-T2 / PV-T4 | |
| Braking Unit | B | With built-in braking unit |
| (blank) | Without braking unit | |
| Voltage Class | T4 | 3PH AC 380-480V Input / 3PH 0-480V Output |
| T2 | 3PH AC 200-240V Input / 3PH 0-240V Output | |
| S2 | 1PH AC 200-240V Input / 3PH 0-240V Output | |
| S3 | 1PH AC 200-240V Input / 3PH 0-400V Output | |
| H2 | 1PH AC 200-240V Input / 1PH 0-240V Output | |
| Reactor Option | (blank) | No reactor |
| -L | With AC output reactor | |
| -T | With DC reactor |
Common 300N variants
| Variant | Meaning | Used in |
|---|---|---|
| G | Heavy load (constant torque), without built-in braking unit | H2; T2 from 15 kW; T4 from 30 kW |
| GB | Heavy load (constant torque) with built-in braking unit | S2; T2 up to 11 kW; T4 up to 22 kW |
| PB | Fan / pump type (light duty) with built-in braking unit | S3, all ratings |
| PV | Photovoltaic DC input with CVT / MPPT tracking | PV-T2 / PV-T4, all ratings |
Available Configurations
| Configuration | Model Suffix | Best For |
|---|---|---|
| General Industrial | G | Conveyors, CNC, mixers, general machinery |
| Fan & Pump (Energy Saving) | P | Centrifugal pumps, HVAC fans, blowers (lower overload, optimized for variable torque loads) |
| Solar/PV Dedicated | PV | Solar water pumping, agricultural irrigation, off-grid water supply (MPPT + CVT dual-mode solar tracking) |
Optional Accessories
- Braking Unit (B): Built-in braking resistor for applications requiring fast deceleration (cranes, hoists, elevators)
- AC Output Reactor (-L): Recommended for long motor cable runs (>50m) or multiple motors on one VFD
- DC Reactor (-T): Improves power factor and reduces harmonic distortion for large installations
- Communication Cards: Profibus-DP and Profinet modules available on request for SCADA integration
Applications
Industrial machinery, CNC equipment, conveyor systems, and any application requiring three-phase 380V motor operation from single-phase 220V supply.
OEM & ODM available. Contact us for pricing and technical support.
Inside the 300N S3 Series: Structure, Quality & Certification
Built in our own SHZK production line, the 300N S3 Series combines a precision power stage with factory-tested reliability. Every unit is 100% full-load aged and QA-inspected before shipping.
✅ CE Certified — compliant with EU Low Voltage Directive 2014/35/EU and EMC Directive 2014/30/EU. Certificate no. M.2026.206.C145141 (UDEM, valid 2026–2031). Download CE certificate →
Precision power stage — IGBT modules and a layered control PCB.
Efficient cooling — finned heat sink and power module design for sustained torque.
Vector control board — precise speed & torque regulation logic.
Scalable footprint — compare unit sizes from 1.5 kW to 11 kW and beyond.
Factory & Quality Assurance
SMT surface-mount production and 100% full-load aging before delivery — backed by CE, RoHS & ISO 9001 manufacturing.
OEM / ODM Ready
Custom branding, packaging and parameter presets from a MOQ of 50 units — for system integrators and panel builders.
Download 300N S3 Series Technical Documentation (PDF)
Control Circuit Wiring Diagrams
The following diagrams show the control circuit terminal layout and wiring for each main board type used in the 300 Series.
Main Circuit Terminal Layout
Main Circuit Terminal Layout (R/L1, S/L2, T — PP, PB — U, V, W — G, E)
A-Type Main Board Wiring Diagram
Wiring Notes
- Analog voltage signals require shielded cables; wiring distance should not exceed 20m.
- In severe interference environments, equip analog signal source side with filter capacitor or ferrite core.
- Terminal assignments may vary by model — refer to actual product labeling.