SolaX X1 String Inverters

SolaX X1 single-phase string inverters

Match the inverter to the roof, the array and the way you use power.

From compact domestic arrays to larger single-phase installations, the X1 MINI, BOOST and SMART ranges provide a practical choice from 0.6 kW to 10 kW. Mr Solar designs the complete system around your supply, panel layout, shading and network limits.

Genuine SolaX X1 BOOST G4 single-phase string inverter
MCS-certified solar design  •  NAPIT approved  •  Norfolk and Suffolk
Choose the right X1

Three string-inverter families, one properly specified system.

A higher inverter number is not automatically better. Cable routes, roof orientations, current limits and the DNO-approved export level all matter.

X1 MINI G4

0.6–3.3 kW

Compact choice for smaller single-phase arrays, extensions and installations needing one MPPT tracker.

1 MPPT • IP66 • 290 × 206 × 120 mm

X1 BOOST G4

2.5–6 kW

Flexible domestic range with two MPPT trackers for two roof orientations or separate strings.

2 MPPT • IP66 • 404 × 274 × 146 mm

X1 SMART G2

5–10 kW

Larger single-phase systems with three MPPT trackers and greater input-current capability.

3 MPPT • IP66 • 515 × 370 × 170 mm
Benefits and features

Designed for useful generation, straightforward monitoring and safe operation.

Up to 200%PV oversizing capability across the current ranges, subject to model limits and professional design.
Low start-up voltageGeneration can begin earlier in suitable conditions, with a 50 V start-up voltage on MINI and BOOST.
Multiple MPPTsChoose one, two or three trackers to suit different orientations, string layouts and array sizes.
SolaXCloudWi-Fi/app monitoring, 10-second data refresh and diagnostic tools on supported configurations.
Built-in protectionType II surge protection on AC and DC, export control and optional AFCI depending on model.
Smart integrationSelected ranges support compatible heat-pump, EV-charger, load-control and multi-inverter functions.
Model size charts

Compare the current SolaX X1 string-inverter range.

PV figures below are manufacturer maximum recommended array sizes—not automatic permission to export that power to the grid.

X1 MINI G4 — compact, one-MPPT models
Model Rated AC output Max recommended PV MPPT Size / weight
0.6K 0.6 kW 1.2 kWp 1 290 × 206 × 120 mm / 5.2 kg
0.7K 0.7 kW 1.4 kWp 1 290 × 206 × 120 mm / 5.2 kg
0.8K 0.8 kW 1.6 kWp 1 290 × 206 × 120 mm / 5.2 kg
1.1K 1.1 kW 2.2 kWp 1 290 × 206 × 120 mm / 5.2 kg
1.5K 1.5 kW 3.0 kWp 1 290 × 206 × 120 mm / 5.2 kg
2.0K 2.0 kW 4.0 kWp 1 290 × 206 × 120 mm / 5.5 kg
2.5K 2.5 kW 5.0 kWp 1 290 × 206 × 120 mm / 5.5 kg
3.0K 3.0 kW 6.0 kWp 1 290 × 206 × 120 mm / 5.5 kg
3.3K 3.3 kW 6.6 kWp 1 290 × 206 × 120 mm / 5.5 kg
X1 BOOST G4 — flexible, two-MPPT models
Model Rated AC output Max recommended PV MPPT Size / weight
2.5K 2.5 kW 6.0 kWp 2 404 × 274 × 146 mm / 11 kg
3.0K 3.0 kW 6.0 kWp 2 404 × 274 × 146 mm / 11 kg
3.3K 3.3 kW 6.6 kWp 2 404 × 274 × 146 mm / 11 kg
3.68K 3.68 kW 7.2 kWp 2 404 × 274 × 146 mm / 11 kg
4.0K 4.0 kW 8.0 kWp 2 404 × 274 × 146 mm / 11 kg
4.2K 4.2 kW 8.0 kWp 2 404 × 274 × 146 mm / 11 kg
5.0K 5.0 kW 10.0 kWp 2 404 × 274 × 146 mm / 11.5 kg
6.0K 6.0 kW 12.0 kWp 2 404 × 274 × 146 mm / 11.5 kg
X1 SMART G2 — larger, three-MPPT models
Model Rated AC output Max recommended PV MPPT Size / weight
5K 5.0 kW 10.0 kWp 3 515 × 370 × 170 mm / 19.5 kg
6K 6.0 kW 12.0 kWp 3 515 × 370 × 170 mm / 19.5 kg
7K 7.0 kW 14.0 kWp 3 515 × 370 × 170 mm / 19.5 kg
8K 8.0 kW 16.0 kWp 3 515 × 370 × 170 mm / 19.5 kg
9K 9.0 kW 18.0 kWp 3 515 × 370 × 170 mm / 19.5 kg
10K 9.999 kW 20.0 kWp 3 515 × 370 × 170 mm / 19.5 kg

Model availability, firmware features and permitted export limits can change. Final selection is confirmed against the current SolaX data sheet, panel electrical characteristics, site survey and DNO requirements.

String inverter

Best when solar generation is the priority.

  • Direct, cost-effective grid-connected solar
  • No battery required
  • Choice of one, two or three MPPT trackers
  • Ideal for new arrays and suitable inverter replacements
Need storage?

Choose a hybrid design for battery integration.

A hybrid inverter manages solar, battery charging and discharge within one coordinated system. Backup power still requires the correct battery, changeover equipment and protected-circuit design.

See SolaX Hybrid & Backup

SolaX inverter enquiry

Tell us about your roof, supply and energy use.

Mr Solar can assess a new solar design or a suitable replacement for an existing inverter across Norfolk and Suffolk. Call 01493 289118 or 01603 394104.




















    Product information checked against current official SolaX X1 MINI G4, X1 BOOST G4 and X1 SMART G2 documentation. Final specification is confirmed at quotation.