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High-Quality PV Fuses from China Suppliers and Factory for Solar Panel Protection Against Fault Currents
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High-Quality PV Fuses from China Suppliers and Factory for Solar Panel Protection Against Fault Currents

In photovoltaic (PV) systems featuring more than four module strings, the fault current can easily surpass the system's operating current, leading to potential overheating and damage to wire insulation. To enhance safety and reliability, it is crucial for each string of solar panels to be equipped with a fuse on both the + and - terminals. This approach ensures that only the fault string is isolated, allowing the rest of the PV system to continue generating electricity uninterrupted.

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When a fault arises in the DC circuit of the PV system, the challenge of interrupting the fault current is compounded by the absence of a natural zero crossing, making it more complex than AC fault interruptions. Thus, the fuses play a vital role in mitigating this risk by ensuring the current is reduced to zero. When sourcing these essential components, China suppliers and factories offer high-quality, reliable solutions for enhancing the safety of your PV systems.

    PV Cylindrical Fuse Links
    Solar PV Protection
    PV Cylindrical Fuse Links
    Product Description

    A73 series gPV fuses are specially engineered and tested to provide best-in-class protection performance in protecting high power battery charging and managing systems of Electrical Vehicles and Hybrid Electrical Vehicles, up to 1000 Vdc in ratings from 1A to 30A.

    Product Characteristics
    • Reliable clearing of DC fault currents
    • High cycling performance
    • High breaking capacity to 30kA
    • Operation as low as 200% In overload protection
    • Full coverage of battery module current
    • QR code marks on each fuse for traceability
    • Special design with silver plated caps for high-power PV applications
    • BH 100-01, BH10-02 holders for DIN rail mounting
    Combiner Box & Storage Protection
    PV NH Type Fuses
    Product Description

    AX6 series PV fuses are engineered and manufactured for use in combiner box and power storage protection, made from the highest quality materials and tested to the highest standards. With rated currents from 80A to 200A with a breaking capacity of 10kA.

    Product Characteristics
    • Reliable clearing of DC fault currents
    • High cycling performance
    • Low watt losses
    • Ultra-compact size and power density
    • Breaking Capacity: 10 kA @ 1500 Vdc
    • Time constants: 1–3ms
    • Operation as low as 200% In overload protection
    • Full coverage of battery module current
    • QR code marks on each fuse for traceability
    PV NH Type Fuses
    DC Surge Protection Devices
    Lightning & Surge Protection
    DC Surge Protection Devices
    Product Description

    ASPD Series PV DC Surge Protection Devices are designed and manufactured complying to PV standard IEC 61643-31/EN 50539-11. It is widely used in PV DC combiner boxes, inverters, controllers and DC cabinets. With a rated voltage of 1000 VDC and a maximum discharge current of 40 kA, the integrated high-energy varistor provides highly effective protection against lightning and surge voltages.

    Product Characteristics
    • Type 2 DC power surge protector for PV systems
    • Integrated status indicator window
    • Pre-wired complete modular unit (consists of base unit and replaceable protection modules)
    • Maintenance-free, easily replaceable protection modules
    • High energy MOV's response time less than 25 nano-seconds
    • Optional remote signal contacts for monitoring device (floating changeover contacts FM can be installed)
    • DIN Rail mounting TH35-7.5 / DIN35
    • Compatible with IEC 61643-31/EN 50539-11
    Frequently Asked Questions
    QWhat is the maximum voltage rating of the A73 series PV Cylindrical Fuse Links?

    The A73 series gPV fuses support up to 1000 Vdc, making them suitable for high-power battery charging and management systems in Electrical Vehicles (EV) and Hybrid Electrical Vehicles (HEV).

    QWhat current range do the PV Cylindrical Fuse Links cover?

    The A73 series covers a current rating range from 1A to 30A, providing full coverage of battery module current requirements for various PV and EV applications.

    QWhat are the rated currents and breaking capacity of the AX6 series PV NH Type Fuses?

    The AX6 series PV NH Type Fuses offer rated currents from 80A to 200A, with a breaking capacity of 10 kA at 1500 Vdc, making them ideal for combiner box and power storage protection applications.

    QWhat standards do the ASPD Series DC Surge Protection Devices comply with?

    The ASPD Series DC Surge Protection Devices are designed and manufactured in compliance with IEC 61643-31 and EN 50539-11, the internationally recognized standards for PV DC surge protection.

    QCan the protection modules in the ASPD Series be replaced without replacing the entire unit?

    Yes. The ASPD Series features a modular design consisting of a base unit and replaceable protection modules. The modules are maintenance-free and can be easily swapped out without replacing the entire device, reducing downtime and maintenance costs.

    QDo these PV protection products support DIN rail mounting?

    Yes. The PV Cylindrical Fuse Links support DIN rail mounting via BH100-01 and BH10-02 holders, and the ASPD Series DC Surge Protection Devices are compatible with TH35-7.5 / DIN35 rail mounting, ensuring easy and standardized installation in electrical enclosures.