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    4 String PV Combiner Box

    Low cost 4 string PV combiner box is available with anti-reverse diode, DC circuit breaker, DC fuse and surge protection device, 4 in 1 out, waterproof and dustproof, suitable for all residential, commercial and utility-scale applications.
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    Delivery date: 6-12 days

    Buy an electrical 4 string combiner box for the solar system. Equipped with a high-quality anti-reverse diode, MCCB circuit breaker, DC fuse and surge protection device, 4 in 1 out, can work for PV grid-tie inverters and off-grid inverters.


    • Model: ATO-FU-CB-4
    • Number of DC Inputs: 4
    • Material of Box: Coated lron
    • Protection Level: IP65/IP66
    • Certification: CE
    • IK Impact Resisstance Class: IK08
    • Max Rated Voltage DC: 1000V
    • DC Fuse: 15A (Recommend 15A, support other ampere)
    • Fuse Holder: 1000V DC 30A
    • DC Breaker: 63A
    • Surge Protection DC: Type II In=20KA, Imax=40KA, Ucpv=1000V DC
    • Over-Voltage Category: Cat II
    • Diode for The Function of Anti-Reflux: Build in
    • Connection Type DC Input: PG09, IP68
    • Input Cable Size for Negative and Positive: φ4-8mm
    • Number of DC Outputs: 1 (Support customize for output number)
    • Connection Type DC Output: PG11
    • Gland Connectors: Material: Nylon Plastic, Seals: Nitrile Rubber Buna, IP68
    • Ambient Temperature Range/Humidity: Temperature: -20℃~+60℃, Humidity: 0~99%
    • Altitude: ≤2000m. Derating for above 2000m.
    • Installation: Wall Mounting/Padlockable Latch

    *Note: This PV combiner box has 4 parallel inputs and 1 output.


    • 4 string PV combiner box is waterproof and dust-proof.
    • PV convergence, current anti-reverse protection, over-current protection, over-voltage protection, lightning protection and anti-theft lock.
    • DC combiner box can work for PV grid-tie inverters and off-grid inverters.


    PV combiner box description


    Photovoltaic (PV) combiner boxes are commonly used in residential, commercial, and industrial sectors for solar installations, enabling efficient consolidation of PV panel outputs and simplifying the wiring. These combiner boxes are also utilized in the agricultural sector for powering irrigation systems and agricultural infrastructure.

    PV combiner box applications

    Tips: Why use a PV combiner box for a solar system?

    • Cable Management: The combiner box provides a centralized location to organize and manage the incoming and outgoing cables from the solar panels. This ensures a clean and neat installation.
    • Overcurrent Protection: Combiner boxes often include fuses or circuit breakers to protect the system from overcurrent conditions. These devices help prevent damage to the solar panels and associated electrical components.
    • Monitoring and Diagnostics: Some PV combiner boxes incorporate monitoring equipment that allows for real-time monitoring of the system's performance. This enables early detection of any issues or faults in the solar panels or wiring, facilitating timely maintenance and troubleshooting.
    • Grounding: Proper grounding is essential in a PV system to ensure safety and protect against electrical faults. The combiner box provides a convenient location for grounding connections, helping to maintain the system's integrity.
    • Simplified Installation: By consolidating the wiring connections, the combiner box streamlines the installation process and reduces the number of cable runs from the panels to the inverter or charge controller. This simplifies the overall system design and reduces installation time and costs.
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