Longi Hi – MO6 Solar Panels 440W – Model: LR5-54HTH-440M

The Longi Hi-MO6 440W solar panel (model LR5-54HTH-440M) is a premium monofacial photovoltaic module designed to deliver exceptional performance in both residential and commercial solar energy systems. Developed using High-Efficiency HPBC (Hybrid Passivated Back Contact) technology, this solar panel is part of the Hi-MO6 Explorer series, which represents LONGi’s latest innovation in clean energy solutions.

With a compact format, lightweight frame, and high conversion efficiency of up to 22.5%, the LR5-54HTH-440M is engineered to maximise solar energy output per square metre. It also offers outstanding durability against environmental stressors, making it a reliable choice for long-term installations.

Solar Rains is proud to offer the 440W variant of the Longi Hi-MO6 series, perfect for rooftop installations, commercial arrays, and distributed generation projects across Australia.

Key Features of Longi Hi-MO6 Solar Panel 440W

• High Power Output: Delivers 440W maximum power under standard test conditions.
• HPBC Cell Technology: Passivated Back Contact design ensures minimal loss and higher photoelectric conversion.
• Superior Efficiency: Achieves up to 22.5% conversion efficiency for more energy in less space.
• Compact Design: 108 half-cell module with reduced resistance losses and improved shading tolerance.
• Build Quality: Glass-sheet construction with a black frame and white backsheet for robust protection and a sleek finish.
• Extreme Weather Resistance: Certified for snow loads up to 5400 Pa and wind loads up to 2400 Pa.
• Optimised for 1500V Systems: Compatible with high-voltage configurations for greater system design flexibility.
• Stäubli MC4-EVO2 Connector: Ensures secure, weather-resistant connections with flexible 1200 mm (+/-) cable lengths.
• Ease of Handling: Measures 1722 × 1134 × 30 mm and weighs only 20.8 kg, simplifying transportation and installation.
• Long-Term Reliability: Backed by a 25-year product warranty and a 30-year performance guarantee.

Main Benefits

For Residential Installers

The Longi Hi-MO6 440W solar panel offers homeowners a clean energy solution that is powerful, compact, and visually appealing. Its sleek black frame and high efficiency make it ideal for rooftop systems where aesthetics matter. Thanks to its HPBC cell technology, it performs well even in partial shading, helping maximise household energy yields throughout the day.

For Commercial & Industrial Projects

Businesses looking to reduce operating costs and meet sustainability targets will find great value in this high-output solar panel. The LR5-54HTH-440M supports large-scale installations with a higher power density, reducing the number of panels needed and simplifying mounting system design.

For EPC Contractors

Ease of installation, high mechanical load tolerance, and reliable component integration make this solar panel a preferred choice for EPC professionals. Its 1500V system compatibility enables longer string configurations, which in turn minimises balance-of-system (BOS) costs.

For System Designers

Designers can confidently integrate the Longi Hi-MO6 440W panel into grid-connected, hybrid, or off-grid systems. With improved bifacial uniformity and outstanding cell performance, this solar panel offers reliable, stable outputs across different geographies and weather conditions.

Installation Solar Panels

Installing the LR5-54HTH-440M solar panel is a straightforward process, as outlined in the official installation manual from LONGi.

Site Preparation

Ensure your installation surface (roof, ground-mount, or rack) is clean, stable, and free of sharp edges. Panels must not be installed in conditions where snow or water can accumulate near the junction box.

Mounting

The solar panel can be mounted using either frame bolt holes or clamping.

• Bolt Mounting: Use M6 or M8 stainless steel bolts through the predefined holes on the long frame sides. Ensure all torque and clamping guidelines from the manual are followed.
• Clamp Mounting: Suitable clamps must cover at least 25 mm of the frame edge. Ensure a secure fit to handle wind and snow loads.

Electrical Connections

• Each panel is pre-fitted with a Stäubli MC4-EVO2 connector and a pair of 1200 mm cables.
• Ensure connectors are mated securely with matching MC4-compatible connectors from the inverter or combiner box.
• Do not reverse polarity or connect more than the maximum allowed voltage in one series string.

Earthing & Grounding

• Follow Australian Standards and local regulations for grounding.
• The panel includes grounding points marked on the frame. Use appropriate earth bonding lugs with stainless steel hardware.

Commissioning

• Once all panels are installed and connected, verify open-circuit voltage (Voc) and string continuity.
• Proceed to inverter setup and system energisation under the supervision of a certified installer.

Longi Hi

Founded in 2000, LONGi is one of the world’s most respected solar technology companies. Specialising in monocrystalline solar panels and cutting-edge cell technology, LONGi is recognised for its research-driven innovation, manufacturing excellence, and commitment to sustainability.

With a strong presence in over 150 countries, LONGi’s mission is to “Make the Best of Solar Energy to Build a Green World”. Their Hi-MO series, short for High-efficiency Mono, has set benchmarks in performance and reliability across residential, commercial, and utility-scale solar projects globally.

The Hi-MO6 Explorer range, including the LR5-54HTH-440M, reflects LONGi’s forward-thinking approach to building energy independence and accelerating the global transition to renewable power.