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APSystems QS1 4-Module Micro Inverter for 375W+ Modules

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APSystems QS1 4-Module Micro Inverter for 375W+ Modules 
The QS1 is a four-module micro inverter. Accommodating 375W+ PV modules. The QS1 also has a continuous output of 1,200W with an industry-leading MPPT efficiency of 99.5%. The QS1 also has a continuous output of 1,200W with an industry-leading MPPT efficiency of 99.5%. Save money and time with 1 micro inverters per 4 solar panels. Compare Enphase and APsystems microinverters

***Please note that this product can be paired with modules above 375W nominal rating, and the only detriment is that the amount of clipping will increase slightly.

APSystems QS1 Micro Inverter Characteristics:
• CA Rule 21 Compliant
• Single-phase
 4 panel MLPE grid-tied microinverter
• Wide MPPT voltage range (22V-48V)
• 375W+ solar panels
• Independent MPPT per channel and panel-by-panel visibility
• Continuous output power of 1,200WAC
• Adjustable Reactive Power Control (RPC) (0.7 leading and 0.7 lagging)
• Reduced labor costs of installation with its innovative four-for-one design
• ZigBee communication & free monitoring
• 10-Year Standard Warranty (extendable to 25 years)

If you already have YC600 components from APsystems, have no fear as the QS1 is compatible with the existing YC600 microinverter system, so you can mix and match.

QS1 single ph, 220V AC-60Hz, 1200W, 300W per channel, serves 4 PV modules

APsystems DIY Support Policy:

APsystems does not support DIY self-installers, only professional solar installers, as explained in the APsystems policy regarding Non-Professional Self-Installers attached below.  APsystems encourages you to hire a professional installer. If you have already installed your system or still plan to self-install your system, see the Do-It-Yourself Installer – EMA account registration attached below.

For warranty support, APsystems will only work with professional installers and provide them with the information they need to successfully debug any system issues, submit any required RMA requests, and receive and install any replacement APsystems equipment.

If you need help finding a local professional installer for installation services or warranty support, contact APsystems technical support at 1-844-666-7035 or support.usa@apsystems.com for assistance with locating a certified APsystems installer in your area.

Please note that Renvu Inc. does not provide any professional installation or warranty support services.


  • Manufacturer: APSystems
  • Model: 109047
  • Other Vendor Codes: 109001 KU20841 QS1-NA 321-0004
  • Rated Power Output [W]: 1200
  • Length [mm (in)]: 231mm (9.1in)
  • Width [mm (in)]: 281mm (11.1in)
  • Depth [mm (in)]: 41.3mm (1.6in)
  • Weight [kg (lb)]: 4.5kg (9.9lb)

Surge/Lightning Protection



      • Inverter Type: Grid-Tie Microinverter
      • Maximum/Peak Efficiency [%]: 99.5%
      • CEC weighted efficiency @ 240V [%]: 96.5
      • Max. Input Voltage [V]: 60
      • Min. DC voltage / start voltage [V]: 20
      • Min. DC voltage / start voltage [V]: 20
      • Max. Input Voltage per MPPT [V]: 60
      • Voltage Lower Limit for MPP Range [V]: 22
      • AC Power Rating [W]: 1200
      • Max. AC Power [W]: 300
      • AC Current Distortion [THD%]: <3%
      • NEMA Enclosure Rating: Nema 6
      • Cooling Method: Natural Convection - No Fans
      • Ambient Temperature Range [°C(°F)]: -40°F to +149°F (-40°C to +65°C)
      • Operating Humidity [%]: 100%, condensation
      • Display: Via EMA* Online Portal
      • Communication: Wireless (Zigbee)
      • Basic Warranty [Years]: 10
      • Warranty Extension Options [Years]: 25
      • Safety and EMC Standard: CSA C22.2 No.107.1-01; FCC Part15; ANSI C63.4;ICES-003
      • Compliances: IEEE1547
      • AC grid range [Hz]: 60Hz/59.3Hz-60.5Hz

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