SolaX X1-BOOST G4 6.0kW Single-Phase String Inverter

Built for larger single-phase home solar systems

SolaX X1-BOOST G4 6.0kW Single-Phase String Inverter is designed for domestic solar projects that go beyond the size and ambition of typical entry-level home systems. It remains a grid-tied single-phase inverter, but one with enough capacity and tracking flexibility to suit larger roofs, higher daytime usage and homeowners who want to make stronger use of available solar generation.

That is what makes this model different. Instead of being a modest residential unit with just enough output for a small array, it is a genuinely higher-capacity single-phase inverter that still stays within a compact and recognisably domestic format. For the right home, that is a very attractive combination.

Why the 6.0kW version matters

The biggest reason to choose this model is scale. It provides 6000W rated output and supports up to 12kWp of recommended PV array power, which is a very substantial allowance for a single-phase residential inverter. That makes it highly relevant for larger homes, broader roof areas and installations using high-output modern panels where smaller inverters would feel too limiting.

Compared with the 3.0kW and 3.6kW versions, the 6.0kW model is a clear step up for projects where the solar system is meant to do more. It gives extra design margin, more room for module choice and a more proportionate answer when the customer wants stronger generation from the roof space available.

Core specifications and practical benefits

• 6000W rated single-phase output
• Up to 12kWp recommended PV input
• 200% DC oversizing support
• Dual MPPT layout with one string per tracker
• 40 to 560V MPPT range and 50V start-up voltage
• 16A maximum input current and 22A short-circuit current per MPPT
• Type II SPD on both AC and DC
• Built-in export power control
• WiFi and app-based commissioning and monitoring
• IP66 enclosure and natural cooling

These figures give the inverter a great deal of real-world usefulness. The wide MPPT range helps with string design, the dual-MPPT arrangement improves flexibility across the roof, and the 12kWp PV allowance shows just how much DC capacity this compact unit can support. It is a strong answer for larger homes that still want a tidy wall-mounted inverter rather than a more involved system approach.

Protection, monitoring and control

SolaX equips the X1-BOOST G4 range with a serious residential feature set, and that helps the 6.0kW version feel like a proper high-capacity home inverter rather than just a larger box. Built-in Type II surge protection on both AC and DC sides is a key plus, while the broader platform includes anti-islanding protection, reverse-polarity protection, grid monitoring, DC injection monitoring and temperature protection. The inverter is also ready for rapid shutdown, with wider platform support for AFCI.

Monitoring and user visibility are important at this size too. WiFi and app-based setup help installers commission the system efficiently and give homeowners accessible performance data afterwards. Export control capability is especially relevant on larger domestic arrays, where managing site export can be a more significant part of the system brief.

Installation and site fit

Despite its higher output, the inverter stays compact at roughly 404 x 274 x 146 mm and around 11.5kg. That is a real advantage in domestic settings, where wall space may still be limited even on larger homes. The IP66 enclosure supports use in garages, utility rooms and suitable outdoor mounting positions, while natural cooling keeps operation simpler and quieter.

Two MPPTs also make more sense as system size increases. Larger domestic arrays often benefit from cleaner string separation, even where the roof is broadly straightforward. That helps explain why this inverter is such a strong single-phase option for more ambitious home solar jobs.

Who it suits best

The 6.0kW X1-BOOST G4 is best suited to larger homes on single-phase supply, retrofit projects with expanded array plans, and domestic roofs where the goal is to achieve stronger solar contribution without stepping away from a compact inverter platform. It also works well where current higher-output modules mean the DC side of the system would leave a smaller inverter feeling cramped.

It is the right choice when the system is simply beyond the intended scale of smaller home inverters. Rather than oversizing modest jobs, it gives genuinely larger residential systems a more proportionate and capable single-phase option.

Final view

SolaX X1-BOOST G4 6.0kW Single-Phase String Inverter is the high-capacity option in this family for larger domestic PV systems. With support for up to 12kWp of PV, dual MPPTs, built-in export control, WiFi setup, Type II SPD on AC and DC and an IP66 enclosure, it delivers substantial array headroom in a format that still feels practical for residential installation.