WIT 20-25K-HU-GTI Series

Product Overview

The WIT 20-25K-HU-GTI series covers 20 kW and 25 kW three-phase grid-tied hybrid models. Each model uses 2 MPPT inputs with 2 strings per MPPT, 40 A maximum current and 50 A maximum short-circuit current per MPPT. The maximum PV input voltage is 1000 V with a rated input voltage of 625 V.

The battery port accepts lithium and lead-acid batteries from 40 V to 60 V at a rated 51.2 V, with up to 420 A charge and discharge current over RS485/CAN. The AC input and output are rated at 20 kW / 22 kVA or 25 kW / 27.5 kVA with 380/400/415 V grid connection. Maximum efficiency is 97.60% and the IP66 enclosure uses air cooling.

Key Features

• 20 A string current for high-power modules
• 420 A maximum battery charge and discharge current
• Low-voltage battery compatibility (40-60 V)
• 1.1x AC load capability
• High power density design
• IP66 protection rating
• 1000 V maximum PV input voltage
• Class II DC and AC surge protection
• RS485 / CAN / USB communication
• WiFi / LAN monitoring available
• OLED and LED display with APP
• Wall-mounted installation
• 5-year warranty

Technical Specifications

DC Input (PV)

Parameter	WIT 20K-HU GTI	WIT 25K-HU GTI
Maximum input power	40 kW	50 kW
Maximum input voltage	1000 V
Start-up voltage	180 V
Rated input voltage	625 V
MPPT voltage range	150-850 V
Number of MPPTs	2
Strings per MPPT	2
Maximum input current per MPPT	40 A / 40 A
Maximum short-circuit current per MPPT	50 A / 50 A

Battery (BAT)

Battery type	Lithium battery / lead-acid battery
Rated battery voltage	51.2 V
Battery voltage range	40-60 V
Number of battery ports	1
Maximum charge / discharge current	420 A
Communication	RS485 / CAN

AC Input (Grid)

Parameter	WIT 20K-HU GTI	WIT 25K-HU GTI
Rated input power	20 kW	25 kW
Maximum input apparent power	22 kVA	27.5 kVA
Rated input voltage / range	380/400/415 V, -15% to +10%
AC wiring type	3P3W+PE / 3P4W+PE
Maximum input current @220 V	45.5 A	56.8 A

AC Output (Grid)

Parameter	WIT 20K-HU GTI	WIT 25K-HU GTI
Rated output power	20 kW	25 kW
Maximum output apparent power	22 kVA	27.5 kVA
Maximum output current @220 V	45.5 A	56.8 A
Rated output voltage / range	380/400/415 V, -15% to +10%
AC wiring type	3P3W+PE / 3P4W+PE
Power factor adjustment range	-1 to +1
THDi	<3%

Efficiency

Maximum efficiency	97.60%
European efficiency	97.00%
MPPT efficiency	99.90%

Protection

DC input reverse-polarity protection	Available
DC input switch	Available
AC short-circuit protection	Available
AC overcurrent protection	Available
DC / AC surge protection	Class II / Class II
Insulation resistance monitoring	Available
Ground fault monitoring	Available
Residual current monitoring	Available
Anti-islanding protection	Available
String monitoring	Available
DC arc fault detection	Optional

General Data

Dimensions (W × H × D)	475 × 695 × 241 mm
Weight	53 kg
Operating temperature range	-30 °C to +60 °C (derated above 45 °C)
Relative humidity	0-95%
Maximum operating altitude	4000 m
Protection rating	IP66
Topology	Transformerless
Cooling	Air cooling
Display	OLED + LED / APP
Communication	RS485 / CAN / USB; WiFi / LAN available
Installation	Wall-mounted
Warranty	5 years

Applications

The series is designed for commercial three-phase grid-tied PV-plus-storage installations requiring high battery current and compact installation.

• Commercial rooftop PV with storage
• Backup power with low-voltage battery
• Self-consumption optimisation
• Peak-shaving applications
• Demand charge reduction

OEM & Custom Requirements

Project supply and private-label requirements can be confirmed against the standard WIT 20-25K-HU-GTI platform. Share the required battery configuration and destination market.

• Private-label enclosure and documentation
• Power class selection from 20 kW to 25 kW
• Battery interface configuration
• Manual localisation for the target market
• Packaging and delivery planning