About This Product

The SAJ 25kW H2 SERIES Three Phase Hybrid Inverter with 3 MPPT is a 25 kW three-phase hybrid inverter designed to manage solar PV generation, high-voltage battery storage and grid connection through one inverter platform. The SAJ H2-25K-T3-AU provides three independent MPPT trackers, allowing installers to divide the solar array across different roof orientations or electrical string groups. It supports up to 45 kWp of connected PV array capacity and operates with compatible LiFePO4 high-voltage battery systems.

As a hybrid inverter, the H2 can direct available solar energy between site loads, battery storage and the electricity grid according to the configured operating mode. Backup output is also supported when the system is designed and installed with the required compatible equipment.

Who This Product Suits

The SAJ H2 25 kW is suited to larger three-phase residential, rural and light-commercial solar and battery installations where a conventional solar-only inverter does not provide the required storage functionality. Its three MPPT trackers are particularly useful on installations with multiple roof faces, different array orientations or separate PV string groups.

It is also suitable for projects where battery storage or backup capability forms part of the system design. Battery selection, PV string design, backup loads and grid connection requirements should be confirmed by the system designer or installer before installation.

Specifications Explained

The H2-25K-T3-AU has a rated AC output of 25 kW and supports a maximum PV array power of 45 kWp. Its three MPPT trackers operate across a 180-900 V DC MPPT range, with a rated DC voltage of 600 V and maximum DC voltage of 1000 V. Each MPPT supports two PV strings, giving installers additional flexibility when configuring larger arrays.

The battery interface supports LiFePO4 battery systems across a 180-800 V operating range and provides two battery inputs. Maximum inverter efficiency is 98.0%, with Euro efficiency rated at 97.6%. The inverter includes AC and DC Type II surge protection, anti-islanding protection, overload protection, AC short-circuit protection and AFCI protection. System monitoring and configuration are provided through LED and app interfaces, with Wi-Fi and Ethernet communications and optional 4G connectivity.

Summary

The SAJ 25 kW H2 is a three-phase hybrid inverter for larger solar and battery installations requiring substantial PV capacity, high-voltage battery integration and flexible array design. Three MPPT trackers, support for up to 45 kWp of PV, backup operation and integrated energy-management functions make it a practical option for appropriately designed three-phase systems. The SAJ platform also provides app-based monitoring and configurable operating modes for managing solar production, battery charging and site energy use.

Further Information From The Manufacturer

The SAJ H2-25K-T3-AU 25kW Three Phase Hybrid Inverter is a high-performance solar and battery storage solution designed for larger residential and commercial energy systems. Featuring three MPPTs, a rated AC output power of 25,000W and support for up to 40kW of PV array power, it provides flexible and efficient energy management for high-demand applications.

The inverter is compatible with SAJ B2S high-voltage batteries, supporting 4-8 battery modules per tower. With dual battery inputs, the H2 10-30K T3 Series can support up to two battery towers, providing scalable battery storage capacity to suit larger energy requirements.

For reliable backup power, the inverter features an integrated UPS-style backup system for essential loads, with a 47.2A bypass current and switching time of ≤10ms. It can provide peak backup output of up to 30,000W for 3 seconds. A manual transfer switch is recommended separately for additional backup load redundancy.

Key Features:

• 25kW three-phase hybrid inverter
• 3 MPPTs for flexible PV configuration
• Rated AC output power: 25,000W
• Maximum PV array power: 45,000W
• Compatible with SAJ B2S high-voltage batteries
• Supports 4-8 B2S battery modules per tower
• Supports up to 2 battery towers via dual battery inputs
• Built-in UPS-style backup for essential loads
• 47.2A backup bypass current
• Backup switching time: ≤10ms
• Peak backup output: up to 30,000W for 3 seconds
• IP65 rated
• Dimensions: 659mm W x 576mm H x 242mm D
• Weight: 50kg
• 10-year standard warranty

Package Includes:

• 1 x Three-phase smart meter
• 3 x 100A/40mA CTs
• 1 x 10m meter communication cable
• 1 x eSolar AIO3 module
• 1 x PV wiring cover

Weights & Measurements Information

About SAJ

SAJ is a manufacturer of solar inverters, battery storage systems and associated energy-management equipment. Its residential range includes grid-connected and hybrid inverters together with modular high-voltage battery systems. SAJ develops its battery and inverter products as integrated platforms, allowing compatible components to communicate and operate as a complete solar and energy-storage system. In Australia, SAJ supplies equipment for residential and commercial solar and battery applications.