About This Product

The Sigenergy 50.0kW 3 Phase C&I PV Solar Inverter 4 MPPT IP66 is a three-phase commercial and industrial solar inverter designed for larger rooftop and ground-mounted PV systems. It provides 50kW nominal AC output and supports up to 100kWp of PV input, giving installers flexibility when designing systems with higher DC oversizing.

This model uses 4 MPPTs with 2 PV strings per MPPT, helping manage different roof orientations, string layouts and solar array sections. It has an IP66-rated enclosure for outdoor installation, smart air cooling, integrated AFCI protection, and built-in DC and AC surge protection for a cleaner commercial installation.

Who This Product Suits

This inverter suits commercial and industrial solar projects that need a dedicated 50kW three-phase PV inverter with multiple MPPT inputs. It is a good fit for warehouses, factories, farms, schools, retail sites and other businesses with larger solar arrays.

It is best suited to installations where string flexibility, outdoor durability and integrated protection features are important. The 4 MPPT layout is useful when panels are split across different roof faces or when the array design needs more control than a basic single or dual-MPPT inverter can provide.

Specifications Explained

The 50kW nominal output rating refers to the inverter’s AC output capacity for a three-phase commercial electrical system. The maximum PV input of 100kWp allows the solar array to be sized above the inverter output, which is common in commercial solar design where site conditions and production profiles are taken into account.

The 4 MPPT design means the inverter can independently track power from different panel groups. Each MPPT supports 2 strings, giving a total of 8 string inputs. The MPPT operating voltage range is designed for commercial string layouts, and the inverter supports high input current per MPPT for modern high-current solar modules.

IP66 protection means the enclosure is built for exposed outdoor environments. The inverter also includes AFCI protection, residual current monitoring, DC reverse polarity protection, DC and AC surge protection, and smart air cooling to support safe and reliable operation in demanding commercial sites.

Summary

This Sigenergy 50kW C&I PV inverter is a practical choice for larger three-phase solar installations where installers need strong PV input capacity, 4 MPPT flexibility and an outdoor-rated commercial inverter platform.

Its key strengths are the 50kW three-phase output, 100kWp maximum PV input, 4 MPPTs with dual string inputs, IP66 enclosure, high conversion efficiency, and integrated electrical protection features. It is intended for professional commercial solar installations and should be selected as part of a properly designed grid-connected PV system.

Further Information From The Manufacturer

The Sigenergy 50.0kW 3 Phase C&I PV Solar Inverter (Sigen PV 50M1 AU) is a high-performance commercial solar inverter designed to maximise energy generation for small to medium-scale commercial and industrial solar systems. Engineered for reliability, efficiency, and installation flexibility, this advanced inverter delivers powerful output while remaining compact and lightweight for easier handling and faster installation.

With four independent MPPTs (Maximum Power Point Trackers) and support for two strings per MPPT, the Sigen PV 50M1 AU allows flexible system design and optimised solar energy harvest across multiple roof orientations or varying shading conditions. Its maximum PV input capacity of 100kW and 98.6% peak efficiency ensure excellent energy conversion and strong system performance.

Built for demanding environments, the inverter features a durable IP66-rated enclosure, allowing safe outdoor installation and dependable operation in harsh Australian conditions. Integrated DC and AC surge protection, along with AFCI (Arc Fault Circuit Interruption) protection, enhances system safety and protects equipment from electrical faults.

The inverter’s smart air cooling system maintains optimal operating temperatures while keeping noise and energy consumption low. Despite its powerful output, the unit remains compact (918 x 640 x 340 mm) and lightweight at just 75 kg, simplifying transport, mounting, and installation.

For monitoring and system integration, the Sigen PV 50M1 AU includes built-in communication options such as RS485, Ethernet, WLAN, and optional 4G connectivity, enabling seamless system monitoring and management without requiring an external data logger for parallel installations. Additional features like instant PV reverse-connection detection help installers quickly identify and resolve wiring issues during commissioning.

Key Features:

• 50kW three-phase commercial solar inverter
• Maximum PV input power of 100,000 Wp
• 4 MPPTs with dual string inputs for flexible system design
• Up to 98.6% maximum efficiency for optimal energy conversion
• IP66-rated enclosure for reliable outdoor installation
• Integrated AFCI protection for enhanced electrical safety
• Built-in DC and AC surge protection
• Smart air cooling system for efficient thermal management
• Compact design: 918 x 640 x 340 mm, weight 75 kg
• Ultra-low standby consumption (<3.5 W at night)

Benefits:

• Flexible string configuration improves overall solar energy yield
• Lightweight design reduces installation time and labour costs
• Suitable for demanding commercial environments and Australian climates
• Built-in monitoring and connectivity eliminates the need for external data loggers
• Fast fault detection with reverse PV connection alerts for easier commissioning

The Sigenergy Sigen PV 50M1 AU 50kW 3-Phase Solar Inverter is an ideal solution for commercial and industrial solar installations, delivering high efficiency, robust protection, and intelligent monitoring in a compact and installer-friendly design

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.