Highlights
- Max efficiency 98.1%
- Wide MPPT voltage
- IP65 protection rated
- Silent natural cooling
- Durable aluminum housing
Sunways STS 3–6kW Inverter
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Highlights
- Max efficiency 98.1%
- Wide MPPT voltage
- IP65 protection rated
- Silent natural cooling
- Durable aluminum housing
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Description
The Sunways STS Series is a high-performance single-phase on-grid inverter designed for residential and small commercial applications. With advanced heat dissipation, integrated lightning protection, and anti-corrosion aluminum alloy housing, it ensures long-term reliability even in harsh environments.
Featuring a wide MPPT voltage range, up to 98.1% efficiency, and the ability to handle up to 10% continuous overloading, the STS series guarantees maximum energy yield. Its compact and lightweight design allows easy one-person installation, while wireless/RS485/WiFi/GPRS/LAN communication options provide seamless monitoring and control.
Built with IP65 protection, natural convection cooling, and compliance with international standards (IEC/EN certifications), the Sunways STS series is safe, reliable, and efficient for modern solar installations.
Specification
Solar Kit Specification
| Inverter Brand | Sunways |
|---|---|
| Warranty - Inverter | 10 Years |
Input (Solar/DC Side)
| Max Input Current per MPPT (A) | 16A |
|---|---|
| Max DC Voltage (V) | 600 V |
| MPPT Voltage Range (V) | 80–450 V |
| No. of MPPTs | 2 |
| Max DC Input Power (kW) | 9.6 kW |
Connector Specification
| Grid Connection | Single phase |
|---|
Output (AC Side)
| Frequency (Hz) | 50 Hz / 60 Hz |
|---|---|
| Grid Connection | Single phase |
| Rated AC Current (A) | 14.6 A |
| Rated AC Voltage (V) | 220 / 230 V |
| Rated Output Power (kW) | 3.3 kW ~ 6 kW |
DB Specification
| Mounting Type | Wall‑mounted |
|---|---|
| Noise Level (dB) | < 25 dB |
Mechanical Details
| Weight | 6.5 kg |
|---|---|
| Dimensions | 32.7 × 29.7 × 11.4 cm |
| Mounting Type | Wall‑mounted |
Smart Features
| Communication Interfaces | GPRS, RS485, Wifi / Ethernet |
|---|
General
| Cooling Type | Natural convection |
|---|---|
| Max Efficiency (%) | 98.1% |
| Phase | 1/1 |
| Inverter Type | Transformer-less |



