About This Product

The Sigenergy 125.0kW 3 Phase C&I PV Solar Inverter 4 MPPT IP66 is a high-capacity three-phase commercial solar inverter designed for larger grid-connected PV systems. It is built for commercial and industrial installations where strong AC output, flexible string design and reliable outdoor operation are required. This model supports high PV input capacity, a broad MPPT operating voltage range and an IP66-rated enclosure for exposed installation environments.

Who This Product Suits

The Sigenergy 125.0kW 3 Phase C&I PV Solar Inverter 4 MPPT IP66 suits commercial solar projects such as warehouses, factories, farms, schools, retail sites and larger business premises with three-phase supply. It is best suited to installers designing high-output rooftop or ground-mounted PV systems where multiple solar strings need to be managed efficiently across different roof sections or array orientations.

Specifications Explained

The Sigenergy 125.0kW 3 Phase C&I PV Solar Inverter 4 MPPT IP66 has a nominal AC output of 125kW and is designed for three-phase commercial grid connection. It supports up to 220kWp of PV input, with a maximum DC input voltage of 1,100V and an MPPT operating range from 160V to 1,000V. The inverter includes high-current PV input capability for modern commercial solar modules, plus safety features such as arc fault circuit interrupter protection, residual current monitoring and DC reverse polarity protection. The IP66 rating means the enclosure is dust-tight and protected against strong water jets, making it suitable for outdoor commercial installations when installed to manufacturer requirements.

Summary

The Sigenergy 125.0kW 3 Phase C&I PV Solar Inverter 4 MPPT IP66 is a large commercial PV inverter for three-phase solar systems requiring high output, flexible string handling and robust outdoor protection. It is a practical choice for installers working on larger business, industrial or agricultural solar projects where strong PV input capacity and commercial-grade protection features are important.

Further Information From The Manufacturer

The Sigenergy 125.0kW 3 Phase C&I PV Solar Inverter (Sigen PV 125M1 AU) is a high-capacity commercial solar inverter designed for large commercial and utility-scale solar installations. Delivering powerful output, advanced safety features, and strong grid compliance capabilities, this inverter provides a reliable and efficient solution for demanding solar energy projects.

With a maximum PV input power of 220kW and eight independent MPPTs (Maximum Power Point Trackers)-each supporting two strings-the Sigen PV 125M1 AU enables flexible solar array configurations across large rooftops or ground-mounted systems. This design helps maximise energy production even when panels are installed across multiple orientations or exposed to varying sunlight conditions.

The inverter delivers an impressive nominal output power of 125kW with a maximum output current of 181.2A, making it well suited for high-capacity commercial and industrial solar systems. Its advanced architecture supports efficient energy conversion while maintaining stable performance in demanding grid environments.

Engineered for durability and safety, the inverter includes a comprehensive range of built-in protection features such as Arc Fault Circuit Interruption (AFCI), Residual Current Monitoring (RCM), and DC reverse polarity protection, helping safeguard both the solar system and connected equipment. Integrated communications and protection features also reduce the need for additional hardware, simplifying system installation and reducing overall costs.

Designed for reliable operation in challenging environments, the inverter features a rugged IP66-rated enclosure and can operate across a wide temperature range from -30°C to 60°C. It is also capable of operating at altitudes up to 5,000 metres (with derating from 4,000 metres), making it suitable for remote or elevated project locations.

Key Features:

• 125kW three-phase commercial & industrial solar inverter
• Maximum PV input power of 220,000 Wp
• 8 MPPTs with 2 strings per MPPT for flexible system design
• Nominal output power: 125,000 W
• Maximum output current: 181.2A
• Built-in AFCI, residual current monitoring (RCM), and DC reverse protection
• IP66-rated enclosure for reliable outdoor installation
• Wide operating temperature range -30°C to 60°C
• High-altitude operation up to 5,000 m (derating from 4,000 m)

Benefits:

• Ideal for large commercial and utility-scale solar installations
• Multiple MPPTs simplify complex solar array layouts and maximise energy production
• Robust design suitable for remote locations and harsh environmental conditions
• Reduced installation complexity with integrated communications and protection features
• Supports compliance with AS/NZS 4777.2 and international safety standards

The Sigenergy Sigen PV 125M1 AU 125kW 3-Phase Solar Inverter delivers the performance, reliability, and safety required for large-scale solar energy systems, making it an excellent choice for commercial, industrial, and utility solar projects.

Weights & Measurements Information

About Sigenergy

Sigenergy develops premium hybrid inverters and modular battery systems commonly used in residential and light-commercial energy-storage projects. Their products focus on safety, rapid installation, and high-power backup capability. With strong attention to software and user interface design, Sigenergy systems provide reliable day-to-day performance and detailed monitoring.