Low Frequency Inverter 20KW Solar Inverter RS485 Wifi Communication Single-phase 220V Inverter
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Keep essential operations powered with this 20kW low-frequency off-grid solar inverter, designed for demanding single-phase 220V backup and independent power systems. It converts 192V DC battery power into clean 220V AC electricity with a pure sine wave output, making it a practical choice for businesses, farms, workshops and large residential installations. The tall cabinet design shown in the photos combines an easy-to-read front LCD control panel with substantial ventilation and rear cooling fans for a neat, professional power-management solution.
Key Features & Benefits
- 20kW off-grid power capability supports larger backup and alternative-energy setups where dependable power matters.
- Pure sine wave output delivers smooth 220V AC power suited to sensitive electronic equipment and everyday electrical loads.
- Single-phase 220V output aligns with common South African residential, commercial and light-industrial electrical environments.
- 50Hz/60Hz output frequency gives flexibility for systems and equipment designed around either standard frequency.
- LCD display with front-panel buttons puts key operating information and controls within easy reach for simpler day-to-day management.
- WiFi and RS485 communication enables integration with compatible monitoring or external-control arrangements.
- Overload protection adds an important layer of protection when connected loads demand more than expected.
- 85% inverter efficiency supports effective DC-to-AC conversion in a high-capacity battery-powered system.
- Purpose-built cooling layout includes visible side vents, front ventilation grille and three rear-mounted fans to assist airflow around the unit.
- Integrated castor wheels make this substantial 140kg inverter easier to position during installation or when reorganising an equipment room.
Design & Build
This inverter has a clean black, floor-standing cabinet format with a smart, understated finish that suits dedicated power rooms, plant areas and technical installations. Its front panel features a recessed blue-backlit LCD display, status indicators and tactile control buttons framed by subtle yellow accents. The cabinet uses screwed access panels and generously sized ventilation openings on the front and sides. At the rear, three fan assemblies, a communication port, labelled battery/AC connection areas and clearly separated switching controls create an organised installation-facing layout. Measuring 750 × 450 × 1050mm, it is a substantial unit intended for a permanent, properly planned power setup.
Ideal For
The 20kW inverter is ideal for off-grid solar and battery backup projects in large homes, smallholdings, farms, guesthouses, offices, retail premises, workshops and other operations needing a high-capacity single-phase 220V power solution. It is especially useful where load-shedding resilience, backup continuity or reduced dependence on the grid is a priority. For best results, installation and system sizing should be handled by a qualified solar or electrical professional.
Why Buy From BestDealz
BestDealz helps South African buyers source practical business and energy equipment without the usual import complexity. We focus on carefully selected products, clear product information and a straightforward buying experience, helping you access high-capacity power solutions for your project with confidence.
Build a stronger off-grid or backup power system with this 20kW pure sine wave solar inverter—order from BestDealz today and power your next installation with confidence.
Product Gallery
Technical specifications
| Output Type | Single |
|---|---|
| Type | DC/AC Inverters |
| Inverter Efficiency | 85% |
| Input Voltage | 192V |
| Output Voltage | 220V |
| Output Current | 20A |
| Output Frequency | 50Hz/60Hz |
| Size | 750*450*1050mm |
| Weight | 140KG |
| Display | LCD Display |
| Waveform | Purer Sine Wave |
| Protection | Overload |
| Communication | WIFI / RS485 |
| Inverter type | Off-grid Power Inverter |
| Single volume | 0 cm³ |
| Single gross weight | 0.0 kg |
| SKU | 1601392526439 |
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Shipping & logistics
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What's included
- Factory pickup: Our Shenzhen agent collects from supplier's warehouse
- Sea freight: FCL or LCL via verified carriers
- SARS clearance: Customs duties + 15% VAT pre-paid
- SA last-mile: Door-to-door via Aramex, Courier Guy or your carrier
- Insurance: 110% CIF cargo cover included
Sea freight (standard)
| Production lead time | 15–20 days |
|---|---|
| Sea freight (Shenzhen → Durban) | 20–24 days |
| SARS clearance | 3–5 business days |
| SA last-mile delivery | 1–3 business days |
| Total door-to-door | 60–70 business days |
| Estimated arrival | 27 Sep, 2026 |
Warranty & returns
Each unit ships with the manufacturer's warranty as disclosed by the supplier. Trade Assurance covers any pre-shipment defects.
Trade Assurance dispute resolution
If goods don't match the agreed spec or arrive damaged, raise a dispute via your BestDealz dashboard within 30 days. Funds remain held under Trade Assurance until both parties agree on resolution.
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