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Photovoltaic Fuses and Protection Components from China Suppliers and Factory for Solar Power Systems
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Photovoltaic Fuses and Protection Components from China Suppliers and Factory for Solar Power Systems

In photovoltaic (PV) systems with more than four module strings, fault currents can easily exceed normal operating currents, leading to overheating and potential damage to wire insulation. To ensure maximum safety for both the system and the personnel working on the equipment, it is essential to have a fuse installed on each + and - terminal of every solar panel string. This proactive measure ensures that only the string experiencing the fault will be isolated, allowing the rest of the PV system to continue generating electricity without interruption.

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When faults occur in the DC circuit of PV systems, the absence of a natural zero crossing makes it more challenging to interrupt DC faults compared to AC faults. In this scenario, the fuses play a critical role in forcing the current to decrease to zero, thus protecting the system. As a trusted factory and supplier in China, we provide high-quality fuses specifically designed for solar panel strings, ensuring reliable protection and optimal performance for your PV systems.

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    PV Cylindrical Fuse Links
    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.
    • 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
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    PV NH Type Fuses
    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.
    • 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
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    DC Surge Protection Devices
    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.
    • 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
    Q What is the voltage rating of the A73 series PV Cylindrical Fuse Links?
    The A73 series gPV fuses are rated up to 1000 Vdc, covering a current range from 1A to 30A, making them suitable for high-power battery charging and management systems in Electrical Vehicles (EV) and Hybrid Electrical Vehicles (HEV).
    Q What breaking capacity do the PV NH Type Fuses (AX6 series) offer?
    The AX6 series PV NH Type Fuses provide a breaking capacity of 10 kA at 1500 Vdc, with rated currents ranging from 80A to 200A, designed for use in combiner boxes and power storage protection systems.
    Q Which international standards do the ASPD Series DC Surge Protection Devices comply with?
    The ASPD Series PV DC Surge Protection Devices are designed and manufactured in compliance with IEC 61643-31 and EN 50539-11, the recognized international standards for PV DC surge protection equipment.
    Q How are these PV protection products mounted for installation?
    The PV Cylindrical Fuse Links support DIN rail mounting via BH 100-01 and BH10-02 holders. The DC Surge Protection Devices also feature DIN Rail mounting compatible with TH35-7.5 and DIN35 rail standards, enabling easy integration into standard electrical enclosures.
    Q Do these fuses support traceability and quality tracking?
    Yes. Both the A73 series PV Cylindrical Fuse Links and the AX6 series PV NH Type Fuses feature QR code marks printed on each individual fuse, enabling full product traceability throughout the supply chain and service lifecycle.
    Q What is the maximum discharge current of the ASPD Series DC Surge Protection Devices?
    The ASPD Series DC Surge Protection Devices support a maximum discharge current of 40 kA, with a rated voltage of 1000 VDC. The integrated high-energy MOV (Metal Oxide Varistor) responds in less than 25 nanoseconds, offering highly effective protection against lightning strikes and transient surge voltages.