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Split Solar Junction Box Manufacturers

Split Solar Junction Box Manufacturers

Junction Box Applications

A split junction box is a type of electrical enclosure that provides easy access to electrical connections for maintenance and inspection. It features a separable design, with a body and a cover that split apart for convenient wiring. Split junction boxes are ideal for various applications in residential and commercial electrical wiring.


  • Safe and Organized Branch Circuits: Split junction boxes are used to house and protect electrical connections where circuits branch out in different directions. This branching is necessary for supplying power to outlets, switches, and light fixtures throughout a building. The box conceals and safeguards the connections from accidental contact and environmental hazards.


  • Fixture and Switch Installations: Split junction boxes are commonly used behind light switches, outlets, and fixtures to house the wire connections. The split design allows for easy installation and maintenance of these electrical components.


  • Underground and Wet Locations: Specific split junction boxes are designed with waterproof materials and gaskets for underground applications or areas prone to moisture. These boxes protect the connections from water exposure, preventing corrosion and electrical hazards.


  • Remodeling and Renovation Projects: Split junction boxes are valuable during renovations as they provide easy access to existing wiring for modifications or additions. The split design simplifies the process of adding new circuits or fixtures without needing to permanently alter the box itself.

Junction Box Standards

Split junction boxes must comply with specific safety standards to ensure their suitability for electrical applications. Common standards include:


  • National Electrical Code (NEC): The NEC, set by the National Fire Protection Association (NFPA), outlines safety regulations for electrical installations in the United States. Split junction boxes must comply with NEC articles regarding box types, applications, and installation practices.


  • Underwriters Laboratories (UL): UL is a safety certification organization that tests and verifies electrical components for safety compliance. Look for UL listed split junction boxes to ensure they meet industry safety benchmarks.


  • Material Specific Standards: The materials used in split junction boxes may also have specific standards. For instance, PVC junction boxes may comply with ASTM International (ASTM) standards for flammability or impact resistance.

Solar Junction Box for PV Installation


Meeting safety regulations is paramount in electrical work. Split junction boxes that comply with National Electrical Code (NEC) and Underwriters Laboratories (UL)



Made from robust materials like metal or flame-retardant PVC, split junction boxes shield electrical connections from impact, dust, and moisture.



The split design of these boxes allows for effortless wiring during installation and future maintenance.



Remodeling projects often involve modifying existing electrical wiring. Split junction boxes simplify this process by offering easy access to connections for additions or alterations.

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Split junction boxes provide a secure enclosure for electrical wire connections, promoting safety by preventing accidental contact



Split junction boxes are multi-purpose enclosures suitable for various electrical applications. From housing branch circuits to accommodating fixture and switch connections

Related Products


MC4 Connectors

A type of electrical connector that is commonly used in solar PV systems. MC4 connectors are weatherproof and easy to use.


TUV Solar Cable

TUV solar cable is a type of solar cable that has been certified by TÜV Rheinland, a German technical inspection association.


PV Harness Connectors

The PV harness connector is a crucial component in photovoltaic (PV) systems, ensuring a secure and weatherproof connection between solar panels, cables, and other electrical elements


Q: Where is the Split Solar Junction Box installed in a PV system?

A: The split junction box is typically mounted on the back of a PV panel. It is located between the PV panel and the inverter, and it serves as the central hub for managing and distributing the electricity produced by the PV panel.


Q: How does the Split Solar Junction Box protect the PV system?

A: The split junction box includes fuses or circuit breakers that are designed to protect the PV system from electrical overloads and short circuits. If the system experiences an electrical overload or short circuit, the fuses or circuit breakers will trip, disrupting the flow of electricity and protecting the system from damage.

Q: How do I know if my Split Solar Junction Box is functioning properly?

A: Advanced monitoring and diagnostic capabilities allow you to track the performance and health of your PV system in real time. You can use it to monitor the operation of the split junction box and identify any issues. If you suspect that there may be an issue with the split junction box, it is always best to consult with a qualified solar technician or your PV system manufacturer for assistance.

Q: How do I maintain the Split Solar Junction Box?

A: Split junction boxes are typically low-maintenance components of a PV system. However, it is always a good idea to periodically inspect the split junction box for signs of damage or wear, such as loose connections or damaged wiring. If you notice any issues, it is important to address them as soon as possible to ensure the safety and reliability of your PV system.

Q: How can I repair a Split Solar Junction Box?

A: Repairing a Split Solar Junction Box may involve cleaning or replacing connections, replacing damaged diodes, or sealing cracks or leaks. Follow safety precautions and consult a professional if needed.


  • From simple to highly sophisticated.              We provide finished custom-assembled assemblies. Design, creation, and sample manufacture are all part of our services.

  • Our items are RoHS Compliant and have been extensively tested. Our wire harnesses and cable assemblies are guaranteed to offer optimum function and cost-efficiency.

  • We offer the highest level of customer service and engineering support assisting in all phases of design to production. 

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