Growatt WIT 4K-HU -hybridi-invertteri, 4 kW, 3-vaiheinen

The three-phase Growatt WIT 4K-HU hybrid inverter combines high yields and maximum flexibility with UPS function, black start and smart connectivity (Shine monitoring, MODBUS TCP). Thanks to DC/AC ratio 1.6 and IP66, it is ideal for efficient, scalable PV storage systems.

With the Growatt WIT 4K-HU hybrid inverter you get a powerful three-phase inverter that combines high energy yields, maximum flexibility and reliable emergency power supply. Thanks to the DC/AC ratio of 1.6, you can optimally utilise your PV system and thus gain more energy. The inverter supports a maximum PV input voltage of 1000V and enables a charge and discharge current of 110A. Furthermore, it can be scaled up to 6 devices in parallel, supports DC- and AC-coupled systems and is compatible with several battery systems. With UPS function, black start capability and intelligent load control, the WIT 4K-HU is a future-proof solution for private and commercial PV systems with storage.

• The Growatt WIT 4K-HU at a glance
• Three-phase hybrid inverter
• High yields thanks to DC/AC ratio of 1.6
• Compatible with several battery systems
• Scalable up to 6 devices in parallel
• UPS function with only 10 ms switchover time
• Black start capable for maximum failure safety
• MODBUS TCP available for intelligent integration
• Optional monitoring via Shine app or web platform
• Protection class IP66 for indoor and outdoor use
• Compatible battery systems

The Growatt WIT 4K-HU hybrid inverter is compatible with various battery systems, including:

• Growatt AXE 5.0L-C1 – LiFePO4 battery with CAN bus communication

Hope 5.5L-A1 and Hope 5.0L-B1 – LiFePO4 batteries with RS485 communication

• Sacolar STR 5.5-A1 – LiFePO4 battery with CAN bus communication

ALP 5.0L-E2-US and ALP 5.0L-E1 – LiFePO4 batteries with CAN bus communication

Why a hybrid inverter?

The WIT 4K-HU combines the functions of a grid inverter with integrated battery management. This allows you to store excess energy and retrieve it when needed. With support for DC-coupled and AC-coupled systems, the inverter is particularly flexible and future-proof – ideal for homes and commercial operations with growing energy demand.

• Maximum Power Point Tracking

Thanks to MPPT technology (Maximum Power Point Tracking), the energy yield of your PV system is maximised. The WIT 4K-HU also supports modern, high-performance solar modules. The large MPPT voltage range from 150V to 850V ensures high efficiency even with partial shading or variable module orientation.

• Easy installation and smart control

With its compact design and IP66 protection class, the WIT 4K-HU is optimally suited for outdoor use. Via MODBUS TCP it can be easily integrated into energy management systems. Optionally, you can connect the device via WLAN or LAN to the Growatt Shine app to monitor the system online at any time.

• Protection functions
• PV reverse polarity protection
• Integrated DC disconnect switch
• DC/AC surge protection type II/III
• Insulation resistance detection
• Residual current monitoring
• AC short-circuit protection
• Ground fault monitoring
• Grid monitoring and anti-islanding protection
• AFCI function for arc fault detection
• PV input: maximum recommended PV power 6400 W, start voltage 180 V, nominal DC voltage 600 V, MPPT voltage range 150–850 V, 1 MPPT with 2 strings
• AC output: rated power 4000 W, maximum apparent power 4400 VA
• AC input: rated power 8000 W, maximum apparent power 8800 VA
• Battery (DC): voltage range 40–60 V, recommended battery voltage 51.2 V, BMS communication RS485/CAN
• Backup output (AC): rated power 4000 W, twice the rated apparent power for 10 s
• Package contents
• 1x mounting bracket
• 1x user manual