Solar Combiner box - Hober

Solar Combiner box

Solar Combiner Box

 Solar Combiner Box is a crucial component in photovoltaic (PV) systems. Its primary role is to bring together the outputs of multiple solar panels into one consolidated feed that goes to the inverter.
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1/2 strings Solar Cominber Box

solar combiner box

2in1 2-8 strings Solar Cominber Box

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2-30 Strings Solar Cominber Box

The application of Solar Cominber Box

Solar Combiner Box for Pumping System

Solar Combiner Box for On Grid System

Solar Combiner Box for Off Grid System

Common Parts in a Solar Cominber Box

  1. Circuit Breaker: Disconnects circuits during surges or shorts.

  2. Fuse: Isolates problematic circuits when overloaded.

  3. Busbar: Connects multiple wires, especially from solar panels.

  4. Bridge Bar: Links the circuit breaker and fuse terminals.

  5. Enclosure: Physical box housing all components.

  6. Rapid Shutdown Device: Safety mechanism to quickly turn off rooftop panels.

  7. DC Disconnect: Switch to interrupt the direct current flow.

  8. DC Surge Protective Device: Guards against electrical surges.

  9. DC Fuse Holder: Protective housing for fuses.

Condiderations when buying Solar Combiner Box

Capacity & Configuration: Ensure it can accommodate the number of strings from your solar array.

Protection Features: Prioritize boxes with overcurrent protection, surge protection, and rapid shutdown features.

Enclosure Rating: Look for an IP65 rating or higher to ensure dust and water resistance.

Circuit Breakers vs. Fuses: Determine which overcurrent protection method suits your needs best.

Material Quality: Opt for a combiner box made of robust, corrosion-resistant materials.

Ease of Installation: Choose a design that facilitates straightforward mounting and connection.

Expandability: Consider if the box can be expanded in the future, should your solar setup grow.

Warranty & Support: A solid warranty and manufacturer support can be vital in the long run.

Cost: Ensure the combiner box offers value for its price, factoring in all the above considerations.

More Than a Solar Combiner Box Manufacturer

At Hober, we are committed to exceeding standard delivery by offering exceptional customer service. We take pride in delivering timely support, adhering to high ISO 9001 standards , and providing quality product to your high level needs. This commitment to excellence has solidified our reputation as a premier manufacturer of pv combiner box.

Model Selection Guide

Uncertain about the ideal inverter model – –for your solar system ? Allow us to steer you toward the power and voltage that harmonizes with your project requirements.

Dedicated Technical Support

Have queries or concerns about our inverter? Reach out. We’re here to help to design system, whether that means addressing inquiries or dispatching an engineer to your project site for hands-on assistance.

Solution Design 

offer free design for solar water pump system solutions, which can be customized to meet the requirements of special projects.


Provide online training, as well as 24-hour online after-sales service to ensure our customers receive the support they need.

Why Choose Hober Solar Combiner Box ?

At Hober, we’re dedicated to enhancing your business with the hybrid solar pump inverter. Our unparalleled expertise in the solar industry sets us apart from the rest. The success of your venture hinges on product quality, and we’re your reliable source for excellence, ensuring your solar pump project’s success.

2-IN-1 Integration: PV combiner box with built-in DC breaker, AC breaker, DC surge protector, and AC surge protector.
Hybrid Compatibility: Suited for both DC and AC hybrid input systems.
Advanced Protection: Incorporates lightning protection and reverse polarity protection mechanisms.
Superior Bus Material: Utilizes copper bar for better current endurance.
Efficient Thermal Management: The combiner box diodes are fitted with dedicated heat sinks and air ducts for enhanced heat dissipation.
High Durability: Rated at IP65, ensuring the box is waterproof and dustproof.
Branded Components: Uses key components from renowned brands to boost inverter efficiency and guarantee a stable and reliable performance.

Considerations for Installing a Solar Combiner Box

Safety and Preparation

Always turn off the power before starting and disconnect the fuse & DC output switch before connecting solar cables.

Location and Environment

Choose an accessible location that’s shielded from direct sunlight and potential water hazards. Ensure the area offers good ventilation.

Voltage and Group Consistency: Use a multimeter to measure solar voltage at the fuse’s front end. When connecting groups in parallel, ensure consistent voltage and uniform solar panel numbers in each string.

Polarity and Grounding:

Check the solar panel’s polarity in relation to earth voltage (it should be infinite). Ground the combiner box properly to prevent electrical shocks.

Cabling and Compatibility:

Organize and label cables neatly. Ensure the ratings of internal components match your solar system’s specifications.

Routine Maintenance:

Regularly inspect the combiner box for damage, wear, and secure connections.

Solar Combiner Box Production Process

Maintenance Guide for Solar Combiner Box

♦ Routine Inspection: Schedule periodic inspections to assess the physical condition of the combiner box, checking for any signs of wear, corrosion, or damage.

♦ Cleanliness: Keep the combiner box free from dust, debris, and pests. A clean environment can prevent shorts and improve the box’s lifespan.

♦ Check Connections: Ensure that all connections inside the combiner box are tight and secure. Loose connections can lead to inefficiencies and potential hazards.

♦ Examine Fuses and Circuit Breakers: Regularly check the condition of fuses and circuit breakers. Replace any that show signs of wear or damage.

♦ Surge Protection: Ensure that surge protection devices are functioning properly. These devices protect the system from voltage spikes, such as those caused by lightning.

♦ Monitor Voltage Levels: Use a multimeter to measure the voltage levels of the solar panels feeding into the combiner box. Any inconsistencies might indicate an issue with the panels or connections.

♦ Polarity and Grounding: Periodically check the polarity of connections and ensure the combiner box remains properly grounded to prevent electrical issues.

♦ Physical Enclosure: Inspect the box’s seal and enclosure to ensure it remains watertight and dustproof, maintaining its IP rating.

♦ Update and Upgrades: As your solar system evolves, ensure the combiner box’s components are compatible with any new additions or changes to the system.

♦ Professional Assistance: If you encounter complex issues or are unsure about certain aspects, consider hiring a professional or reaching out to Hober’s support team.

Contact Us

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