Hoymiles HM-300-NT 300VA Microinverter

Hoymiles HM-300-NT 300VA Single-Module Solar Microinverter

The Hoymiles HM-300-NT is a compact 300VA single-module microinverter engineered for plug and play installation in North American residential solar arrays. Designed for individual module power optimization, the hoymiles hm-300 pairs with solar panels rated from 240W to 405W+ to maximize panel-level energy harvesting.

Equipped with integrated Reactive Power Control compliant with CA Rule 21 and native compliance with U.S. NEC 2017/2020 690.12 rapid shutdown mandates, the hoymiles hm-300 features an external antenna for long-range wireless communication with Hoymiles DTU monitoring gateways. Housed in a NEMA 6 (IP67) enclosure with 6000V surge protection, it provides reliable energy conversion across harsh environments.

Technical Specifications

• Commonly used module power (W): 240 to 405+
• Maximum input current (A): 11.5
• Peak output power (VA): 300
• Maximum continuous output power (VA): 295
• Nominal frequency/range (Hz)1: 60/55-65
• Power factor (adjustable): >0.99 default
• Total harmonic distortion: <3%
• CEC peak efficiency: 96.7%
• CEC weighted efficiency: 96.5%
• Nominal MPPT efficiency: 99.8%
• Nighttime power consumption (mW): <50
• Ambient temperature range (°C): -40 to +65
• Dimensions: (W × H × D mm) 182 × 164 × 29.5
• Weight: (kg) 1.75
• Enclosure rating Outdoor-NEMA 6 (IP67)