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  • 120 Watt Solar Micro Inverter, Grid-tie Inverter
120 Watt Solar Micro Inverter, Grid-tie Inverter
120 Watt Solar Micro Inverter, Grid-tie Inverter
120 Watt Solar Micro Inverter, Grid-tie Inverter

120 Watt Solar Micro Inverter, Grid-tie Inverter

$134.82
| 1 review(s) | Add your review
High quality and good price 120 watt solar micro inverter for sale online. The maximum working current of 120W solar pv micro inverter is 7.5A. This grid tie micro inverter uses aluminum alloy material, metal can conduct heat better. Micro grid inverter built-in high-performance maximum power point tracking (MPPT) function, efficiency can reach 99%. The photovoltaic micro inverter is widely used in households, agriculture, and communications areas.
Free shipping
Delivery date: 6-12 days
SKU: ATO-SMI-T-120
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  • Overview
  • Specs
  • Manual
  • FAQ
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Overview

A 120W micro inverter is a compact device that converts direct current (DC) generated by solar panels into alternating current (AC) for use in homes or businesses. Unlike traditional string inverters, micro power inverters are attached to each solar panel individually, allowing for optimized energy production even if one panel is shaded or underperforming. This setup enhances overall system efficiency and monitoring, enabling users to track performance at the panel level. With a power output of 120 watts, this PV micro inverter is ideal for small-scale solar installations or for integrating additional energy sources.


Features:

  • Maximum power point tracking. High-performance maximum power point tracking (MPPT), reverse power transmission, increasing system efficiency..
  • Safe use. Traditional central or string inverters often have direct current voltages of hundreds or thousands of volts, which can easily catch fire and cannot be easily extinguished after a fire. The micro inverters are only a few tens of volts of direct current and are all connected in parallel, minimizing safety hazards.
  • Simple and convenient to use. The grid-connected inverter needs to be connected to the grid to use, the operation is simple and convenient for you to use.
  • Maximize power. Possess a small size and small capacity, commonly used in small solar energy systems.

Details:

120W micro inverter aluminium alloy shell

Aluminium Alloy Shell

It provides excellent heat dissipation, preventing overheating. Aluminum is lightweight, reducing the overall weight of the pv micro inverter and making installation easier. It offers strong corrosion resistance, enhancing durability in outdoor or harsh environments. Aluminum is non-magnetic, ensuring minimal interference with the inverter's electrical components. The material is cost-effective and recyclable, contributing to sustainability.
120W micro inverter terminal post

Terminal Post

In a solar micro inverter, the positive and negative terminals play crucial roles in managing the flow of electricity from solar panels to the grid. The positive terminal connects to the higher voltage side, while the negative terminal connects to the lower voltage side, completing the electrical circuit. This design optimizes energy transfer, reduces power loss, and enhances safety by ensuring proper grounding.
120W micro inverter IP65 protection

IP65 Waterproof Protection

IP65 waterproof protection in a 120W micro inverter ensures that it is dust-tight and protected against low-pressure water jets from any direction. This is crucial for outdoor installations as it safeguards the inverter from harsh weather conditions like rain, humidity, and dust. The protection enhances the inverter's durability and reliability, reducing the risk of damage and maintenance costs.


Wiring Diagram:

Micro inverter single phase connection

single-phase connection

Micro inverter 3 phase connection

Three-phase connection


Applications:

Solar roof

Solar Roof

PV communication station

PV Communication Station

Photovoltaic balcony

Photovoltaic Balcony

Small power station

Small Power Station

Specs
Model ATO-SMI-T-120
Operating voltage range 10.8-30V
Starting voltage range 12-30V
Starting voltage 10.8V
Maximum input power 120W
Maximum working current 7.5A
Maximum allowed access to the power of photovoltaic panels 120W
Recommend access parameters of photovoltaic panels 18V@120W
Output parameters @120VAC / @230VAC
Output peak power 120W
Rated output power 110W
AC voltage range 80-160VAC / 180-280VAC
Output current 0.8A / 0.4A
AC frequency range @50Hz: 47Hz-53Hz ; @60Hz: 57Hz-63Hz
Power factor >95%
Number of branch connections 6PCS (single@120VAC); 12PCS (single@230VAC)
Output efficiency
Static MPPT efficiency 0.99
Max output efficiency 93%
Total current harmonics THD<5%
Loss of power at night <0.5W
Appearance and technical features
Temperature range -20 ℃~65 ℃
Storage temperature range -40 ℃~75 ℃
Waterproof grade IP65
Heat dissipation mode self-cooling
Communication mode none
Monitoring system none
Power transmission mode reverse transmission, load priority
Net amount 0.45kg
Size 108*110*45 mm
Manual

PDF120W Micro Inverter User Manual

FAQ

How does temperature affect the performance of micro inverters?

Temperature plays a significant role in the performance and efficiency of micro inverters in solar power systems. Micro grid inverters convert the direct current (DC) generated by individual solar panels into alternating current (AC) for use in homes or the electrical grid. Their performance, like most electronic components, is sensitive to temperature fluctuations.

  • High temperatures can negatively affect micro inverter efficiency. As temperature increases, the internal resistance of the inverter's electronic components rises, which leads to greater power losses. This decrease in efficiency can reduce the overall energy output of the solar system, especially during hot summer months. Many solar pv micro inverters have built-in thermal management systems, such as heat sinks, to mitigate these effects, but they can only provide limited relief.
  • Low temperatures, on the other hand, often improve the efficiency of grid tie micro inverters. Cooler environments reduce resistance in the electronic components, allowing for more efficient power conversion. However, very low temperatures could also cause mechanical stress, leading to potential reliability issues over time.
  • Thermal cycling, the repeated heating and cooling of components, can accelerate wear and tear, potentially leading to failures. This is particularly a concern in climates with wide temperature variations.
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Existing reviews
Great micro inverter for starting a solar system
I bought this 120W solar micro inverter for my parents to get their start in solar power on her house. We've had one of these running for about a week now with no issues. Very pleased with the performance of this with minimal investment.
Jinny Swift | 3/10/2025 12:48 AM
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