SUN2000 – (20KTL, 12KTL, 10KTL) – M0




The SUN2000 is a three-phase grid-tied PV string inverter that converts the DC power generated by PV strings into AC power and feeds the power into the power grid.


  • SUN2000-10KTL-M0
  • SUN2000-12KTL-M0
  • SUN2000-20KTL-M0

Net Application

The SUN2000 applies to grid-tied PV systems for residential rooftops and small ground plants. Typically, a grid-tied system consists of the PV string, SUN2000, AC switch, and alternating current distribution unit (ACDU).

Figure:Networking application – Single inverter scenario (optional in dashed boxes)

Figure: Networking application – Inverter cascading scenario (optional in dashed boxes)


  •  indicates a power cable,  indicates a signal cable,  indicates wireless communication.
  • If the inverter is connected to the FusionSolar app over its built-in WiFi network, only local commissioning can be performed.
  • In the RS485 cascading communication networking, the master inverter model is SUN2000-(3KTL-20KTL)-M0, and the slave inverter model can be SUN2000-(3KTL-20KTL)-M0, SUN2000-50KTL/60KTL/65KTL-M0, SUN2000-29.9KTL/36KTL, or SUN2000-33KTL-A

A. PV string

B. DC switch

C. SUN2000

D. AC switch


F. Smart Power Sensor

G. Power grid

H. 4G Smart Dongle

I. WLAN-FE Smart Dongle

J. Router

K. Fusion Solar management system

L. FusionSolar APP

M. Load

N. Ripple Control Device

Supported Power Grids

Power grid types supported by the SUN2000 include TN-S, TN-C, TN-C-S, TT, and IT.

Figure: Supported power grids


  • In a TT power grid, the N-PE voltage should be lower than 30 V.
  • In an IT power grid, you need to set isolation settings to input not grounded, with a transformer.

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