Key facts
- Power range: 0.75 kW to 3 kW
- Input: single-phase 220V (200-240V); output: single-phase 220V
- Series name: SHZK 300N H2 (single-phase AC drive and speed controller)
- 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 H2 Series – Single Phase 220V Input / Single Phase 220V Output
The 300N H2 Series is a high-performance vector inverter designed for single-phase 220V input and single-phase 220V output applications. Ideal for small motor speed control with advanced SVPWM control technology.
Need a higher power rating? The 300N H2 Series standard range covers 0.75 kW to 3 kW. Larger ratings in this single-phase-input / single-phase-output configuration can also be built to order — contact our engineers with your motor rating, supply voltage and duty cycle for a quotation.
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 with optimal low-frequency dead zone compensation
- Frequency Resolution: Digital 0.01Hz; Analog max frequency ×0.025%
- Built-in PID closed-loop control
- Multi-speed operation via built-in PLC or control terminals
- RS485 communication support
- 5 programmable digital inputs
- 2 analog inputs (0-20mA, 0-10V)
- 2 relay outputs
- Comprehensive protection: overcurrent, overvoltage, undervoltage, overheat, overload
Model Specifications
| Model | Rated Current | Dimensions (H×W×D mm) | Shell Type |
|---|---|---|---|
| 300N-0.75G-H2 | Input 4.5A / Output 4A | 165×98×128 | Plastic (S) |
| 300N-1.5G-H2 | Input 8A / Output 7A | 165×98×128 | Plastic (S) |
| 300N-2.2G-H2 | Input 11A / Output 9.6A | 165×98×128 | Plastic (S) |
| 300N-003G-H2 | Input 14A / Output 12A | 187×100×137.5 | Plastic (S) |
Y-Series Black Enclosure Option
The same 300 H2 Series (single-phase 220V to single-phase 220V) 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-H2 | In 3.5A / Out 3.5A | 164×88×125 | Plastic (Y Black) |
| 300-1.5KWG-H2 | In 6.8A / Out 6.8A | 164×88×125 | Plastic (Y Black) |
| 300-2.2KWG-H2 | In 10A / Out 10A | 164×88×125 | Plastic (Y Black) |
| 300-3.0KWG-H2 | In 13A / Out 13A | 184×97×135 | 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 with consistent performance.
Enclosure selection manuals (dimensions, panel cut-outs & terminals):
Electrical Specifications
| Power Range | Input Voltage | Output Voltage | Output Frequency |
|---|---|---|---|
| 0.75kW – 3kW | Single Phase 220V 50/60Hz | Single Phase 0-220V | 0-500Hz |
Why Choose 300N H2 Series?
Direct single-phase 220V input and output — the simplest VFD solution for small motors, no phase conversion needed.
Match fan and pump speed to actual demand. Perfect for HVAC, small conveyors, and packaging equipment.
Smallest footprint in the 300N range. Wall-mount or DIN-rail options for tight control panels.
Most affordable 300N series. Ideal for OEM integration and small batch orders.
Quick Selection Guide — H2 Series
| Your Application | Recommended Model | Key Tip |
|---|---|---|
| Small Fan / Blower | Standard | Variable torque saves energy on continuous-run fans |
| Small Pump | Standard | Built-in PID for constant pressure water supply |
| Packaging / Textile Machine | Standard | Multi-speed for different production stages |
| OEM Integration | Custom Logo | MOQ 50 units for OEM branding |
Quick Specs at a Glance
| Input Voltage | 1PH AC 200V ~ 240V |
| Output Voltage | 1PH AC 0 ~ 240V |
| Power Range | 0.75kW – 3kW |
| Output Frequency | 0 – 600Hz |
| Control Mode | Sensorless Vector / V/F |
| Overload Capacity | 150%/60s |
| Best For | Single-phase motor speed control, OEM integration |
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
CNC machines, small conveyors, packaging equipment, textile machinery, and other single-phase motor control applications.
OEM & ODM available. Contact us for pricing and technical support.
Inside the 300N H2 Series: Structure, Quality & Certification
Built in our own SHZK production line, the 300N H2 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 H2 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.