The Suntree 18-Way PV Combiner Box is designed to safely combine and protect multiple solar panel strings before feeding power to the inverter or other DC equipment. It provides organised DC distribution while adding important protection against overcurrent and voltage surges.

☀️ Key Features

• 🔌 18-way PV combiner box
• 🛡️ IP65-rated enclosure
• ⚡ Designed for solar DC installations
• 🔥 Surge protection included
• 🧯 Fused protection for each PV string
• ⚙️ MCB protection against overcurrent
• 🔒 Provision for a main DC isolator
• ☀️ Suitable for multi-string solar arrays
• 🏠 Suitable for residential solar systems
• 🏢 Suitable for commercial and larger PV installations
• 🧰 Helps keep solar DC protection organised in one enclosure

The supplier specifically lists surge protection, fused string protection, an installed MCB, and the option to fit a main DC isolator. 

🔋 What a PV Combiner Box Does

In a larger solar installation, multiple panel strings may need to feed a single inverter or DC distribution point.

The combiner box allows those strings to be brought together in one organised enclosure while providing individual circuit protection.

It helps with:

• ☀️ Combining multiple solar strings
• 🧯 Protecting individual PV strings
• ⚡ Protecting against overcurrent
• 🌩️ Reducing the risk from DC voltage surges
• 🔒 Providing a central isolation point when fitted with a DC isolator
• 🔧 Making maintenance and troubleshooting easier

🛡️ IP65 Enclosure

The IP65 enclosure provides protection against dust and water jets, making it suitable for appropriately installed indoor or outdoor solar applications.

For outdoor installation, the enclosure should still be mounted correctly and all cable entries properly sealed.

✅ Benefits

• Centralises protection for multiple PV strings
• Supports up to 18 DC circuits
• Surge protection included
• Individual string fuse protection
• MCB overcurrent protection
• Neat and professional solar installation
• Easier maintenance and fault isolation
• Suitable for larger residential and commercial systems

🌞 Suitable Applications

• 🏠 Large residential solar systems
• 🏢 Commercial rooftop PV systems
• 🌾 Farm solar installations
• 🏭 Industrial solar systems
• ☀️ Multi-string off-grid systems
• 🔋 Hybrid solar installations
• ⚡ Grid-tied PV systems

⚠️ Installation Notes

• ⚡ Confirm the combiner-box voltage rating matches the solar array
• 🔥 Use correctly rated DC fuses for each string
• 🔒 Fit a compatible DC isolator where required
• 🌩️ Ensure surge protection is correctly earthed
• 🔌 Use properly sized solar cable and PV connectors
• 🛡️ Seal all cable entries to maintain the IP65 rating
• 🌍 Provide proper system earthing
• 🔧 Installation should be carried out by a qualified solar technician