# Solis inverter S5-GR3P20K, 20 kW, 3F

> Solis S5-GR3P20K is a 20 kW three-phase grid-tied string inverter for commercial and larger residential PV systems. It combines two MPPTs, up to 98.7% maximum efficiency, IP66 protection and intelligent redundant fan cooling.

## Product identity
- **Brand:** Solis
- **Product family:** Solis S5-GR3P5K three-phase inverter, 5 kW
- **Variant:** 20 kW
- **SKU:** IS4
- **MPN:** IS4

## Description
Solis S5-GR3P20K is a transformerless 20 kW three-phase grid-tied inverter. Its two MPPTs support up to four PV strings, with a 160–1000 V MPPT range and 32 A maximum input current per MPPT. Maximum efficiency is 98.7% and European efficiency is 98.1%.

The inverter measures 310 × 563 × 219 mm and weighs 20 kg. It is rated IP66, uses intelligent redundant fan cooling and operates from −25 to +60 °C. Standard RS485 communication can be extended with optional Wi-Fi or GPRS modules; AFCI protection is available after activation.

## Specifications
- **Number of MPPTs:** 2
- **Connectivity:** RS485; pasirinktinai Wi‑Fi arba GPRS
- **Cooling:** Išmanus perteklinis ventiliatorių aušinimas
- **Power:** 20 kW
- **Type:** Tinklo inverteriai
- **Protection Class (IP):** IP66
- **Noise level:** < 30 dB(A)
- **Maximum efficiency:** 98,7 %
- **Off-grid operation:** Ne
- **Operating temperature:** −25 °C iki +60 °C
- **Phases:** 3 fazės
- **Warranty:** 10 metų

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