Product Details
Upgrade your solar energy system with the Hoymiles HMS-350-1T-NA Microinverter, one of the most reliable single-panel microinverters on the market. Specifically engineered for North America, it meets NEC rapid shutdown requirements while delivering up to 96.7% peak efficiency.
The HMS-350-1T-NA converts DC to AC at the panel level, maximizing energy harvest even when panels are shaded or mismatched. With its IP67 weatherproof design, natural convection cooling, and module-level monitoring via Hoymiles DTU, this microinverter provides both performance and peace of mind for residential solar rooftops.
Perfect for incremental installations, each HMS-350-1T-NA connects to a single PV panel, giving you design flexibility and safer rooftop solar.
Key Features
- 1-in-1 design — Each unit connects to one solar panel for flexibility in system layout and incremental installation.
- High efficiency — CEC peak efficiency ~ 96.7%.
- Wide MPPT / input voltage range — Works well with panels in the ~ 280-470 W range; MPPT input voltage from ~ 16 V up to 60 V.
- Rapid shutdown compliance — Meets NEC-2017 / NEC-2020 Article 690.12 (for PV rapid shutdown), making rooftop installations safer.
- Durable & weather-proof — IP67 rated enclosure, capable of outdoor installation under harsh weather.
- Low start-up voltage — Allows power harvesting even in lower irradiance.
- Monitoring & communications — Compatible with Hoymiles DTU (data transfer unit), supports wireless communication (Sub-1G).
Why Choose HMS-350-1T-NA?
- Maximized yield per panel thanks to module-level optimization and low start-up voltage.
- Strong safety protection for rooftop installations (rapid shutdown, robust enclosure).
- Flexibility in design: can install panel-by-panel, expand system gradually.
- Reliable performance under harsh outdoor conditions.
- Integrated monitoring helps detect issues early, reducing maintenance costs.
Ideal Use Scenarios
- Residential solar rooftops where shading or panel mismatch may occur.
- Retrofit projects: adding panels one by one.
- Homes or installations where local electrical code requires rapid shutdown.
- Anywhere high durability and weather resistance are needed (outdoor, variable climates).
Installation Tips
- Ensure proper matching of PV module voltage (DC side) to the MPPT voltage range (16-60 V) for best performance.
- Use AC trunk cable and connectors compatible with Hoymiles standards; unused trunk ports should be sealed properly.
- Install by a certified electrician in compliance with NEC / local codes.
- Provide sufficient spacing and airflow, even though cooling is passive (fanless).
- Monitoring setup requires a Hoymiles DTU (data transfer unit) and configuring S-Miles Cloud or other monitoring platform.
