The APsystems QS2: A New Era of Solar Power at Circuit Solar
Circuit Solar is excited to introduce the APsystems QS2 microinverter, a next-generation power conversion solution that significantly raises the bar for residential and small commercial solar installations. This state-of-the-art microinverter combines advanced technology, safety, and reliability to help solar system owners get more out of their solar arrays than ever before — and it’s now available for order through Circuit Solar.
What Is the APsystems QS2?
The APsystems QS2 is a single-phase quad microinverter capable of supporting up to four solar modules per unit with four independent Maximum Power Point Tracking (MPPT) channels. Each MPPT operates separately for maximum energy harvest, even when panels face different directions or shading conditions. This makes the QS2 ideal for modern high-power photovoltaic (PV) module installations where efficiency and flexibility are essential.
With a continuous AC output of up to 2,200 VA, the QS2 comfortably handles the demands of today’s high-output modules, delivering impressive performance from smaller or more complex roof layouts.
Performance and Efficiency
The QS2 is packed with high-performance features:
- Four Independent MPPTs: Ensures each solar module produces as much energy as possible.
- Up to 2,200 VA Output: A class-leading power level for single-phase microinverters in residential and light commercial applications.
- High Efficiency: With MPPT efficiencies approaching industry-leading levels — designed to maximize energy capture from today’s advanced PV modules.
- Smart Grid Interaction: Supports Reactive Power Control (RPC), helping better manage power flow and grid stability.
- Remote Access and Monitoring: Solar system owners and installers can access generation data 24/7 through apps or web portals for monitoring and diagnostics.
Installation Flexibility and Compatibility
The QS2’s compatibility and installer-friendly design make it easy to work with:
- Backward Compatibility: Works smoothly with existing APsystems systems such as DS3 and QS1 microinverters, allowing for seamless upgrades or mixed installations.
- Low DC Input Voltage: Designed for safer rooftop work, it operates with a DC input under 60 V and complies with rapid shutdown requirements.
- Robust, Weather-Tight Build: An IP67-rated enclosure and fully silicone-encapsulated electronics enhance durability and longevity, even in challenging outdoor environments.
Next-Level Communication with Enhanced Zigbee
The latest QS2 incorporates an upgraded Zigbee communication module that delivers faster data performance, stronger reliability, and reduced power consumption compared to earlier generations. With AES-128 encryption and robust mesh networking, QS2 ensures secure, real-time communication across the system — critical for both installers and homeowners managing their solar generation.
Warranty and Long-Term Reliability
To give both installers and system owners peace of mind, the QS2 ships with APsystems’ standard 12-year warranty, which can be extended to 25 years. This industry-leading support ensures long-term performance and confidence in the investment.
What It Means for Circuit Solar Customers
For installers and customers working with Circuit Solar, the arrival of the APsystems QS2 represents a major upgrade path:
- More Power per Inverter: Higher output and four-panel support mean fewer units and lower balance-of-system costs.
- Greater Flexibility: Installers can design more sophisticated and efficient PV layouts without compromise.
- Future-Ready Technology: With advanced communications and grid interaction features, the QS2 is engineered to meet evolving solar standards and grid requirements.
The APsystems QS2 microinverter marks a new chapter in solar microinverter technology — combining power, intelligence, and reliability in a single, installer-friendly package. Now available through Circuit Solar, the QS2 gives homeowners and businesses a powerful pathway to more efficient, smarter, and better-managed solar energy systems.