The HM-300NT by Hoymiles is a compact, high-efficiency 1-in-1 microinverter designed for single-module solar installations.
Built for flexibility, safety, and rapid deployment, this microinverter connects directly to one solar panel, making it ideal for residential systems, DIY installs, and module-level optimization.
Fully compliant with NEC rapid shutdown requirements, it’s a strong choice for modern U.S. solar installations.
Original price was: $180.00.$160.00Current price is: $160.00.
Product details
The HM-300NT by Hoymiles is a compact, high-efficiency 1-in-1 microinverter designed for single-module solar installations.
Built for flexibility, safety, and rapid deployment, this microinverter connects directly to one solar panel, making it ideal for residential systems, DIY installs, and module-level optimization.
Fully compliant with NEC rapid shutdown requirements, it’s a strong choice for modern U.S. solar installations.
| Weight | 4 lbs |
|---|---|
| Dimensions | 7.2 × 6.5 × 1.2 in |
| Maximum input voltage (V) | 60V |
| Maximum input current (A) | 11.5A |
| Peak output power (VA) | 300 |
| Warranty | Up to 25 years |
Description
⚡ Overview
The HM-300NT by Hoymiles is a compact, high-efficiency 1-in-1 microinverter designed for single-module solar installations.
Built for flexibility, safety, and rapid deployment, this microinverter connects directly to one solar panel, making it ideal for residential systems, DIY installs, and module-level optimization.
Fully compliant with NEC rapid shutdown requirements, it’s a strong choice for modern U.S. solar installations.
🔑 Key Features
- 1-in-1 Microinverter (Single Panel)
- 300W Output Power
- Plug & Play Installation
- Rapid Shutdown Compliant (NEC 2017 & 2020)
- High Efficiency (CEC Peak 96.7%)
- Module-Level MPPT (99.8% efficiency)
- NEMA 6 / IP67 Rated (Outdoor Ready)
- No Single Point of Failure
- Integrated Monitoring (S-Miles Cloud)
📊 Electrical Specifications (HM-300NT)
| Parameter | Value |
|---|---|
| Peak Output Power | 300 VA |
| Continuous Output Power | 295 VA |
| Max Input Voltage | 60V |
| MPPT Voltage Range | 16–60V |
| Max Input Current | 11.5A |
| Max Short Circuit Current | 15A |
| Number of MPPTs | 1 |
| Inputs per MPPT | 1 |
⚡ AC Output
| Parameter | Value |
|---|---|
| Nominal Voltage | 240V / 208V |
| Frequency | 60 Hz |
| Power Factor | >0.99 |
| THD | <3% |
⚙️ Efficiency
- CEC Peak Efficiency: 96.7%
- CEC Weighted Efficiency: 96.5%
- MPPT Efficiency: 99.8%
👉 Translation:
You’re extracting almost all available energy from each panel.
🔧 Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions | 182 × 164 × 29.5 mm |
| Weight | 1.75 kg |
| Enclosure | NEMA 6 (IP67) |
| Cooling | Passive (No Fans) |
🌡️ Operating Conditions
- Operating Temp: -40°C to +65°C
- Night Consumption: <50mW
🔌 Installation & Compatibility
Compatible Panel Range:
- 240W to 405W+ modules
👉 Perfect pairing with:
- 400W–455W modules (like your Canadian Solar / SEG panels)
Branch Limits:
- Up to 13 units (12 AWG)
- Up to 19 units (10 AWG)
(Depends on voltage configuration)
📡 Monitoring & Communication
- S-Miles Cloud Platform
- 2.4GHz RF Communication
- External antenna for improved signal
👉 Important for your site:
Pair this with DTU-Pro-S for full system monitoring (which you’re already using in your kits).
🛡️ Safety & Compliance
- UL 1741 Certified
- IEEE 1547 Compliant
- CA Rule 21 Compliant
- NEC Rapid Shutdown (690.12)
- FCC Approved
🏗️ Ideal Applications
Best for:
- Residential rooftop systems
- DIY solar kits
- Systems with shading (panel-level optimization)
- Expandable systems
Not ideal for:
- Large commercial arrays (string inverter may be better)
- High-power panels >405W (consider HM-400NT or higher)
💡 Why This Microinverter (Your Sales Angle)
This is where you win conversions:
- Safer than string inverters (no high-voltage DC)
- Better performance
Customer Reviews
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