Brass Inner Caps For PV Fuse
The Brass Inner Caps for PV Fuse is a core protective and functional component within the fuse, tightly nested around the fusible element, serving as the "inner core barrier" for protecting the high-voltage DC circuits of photovoltaic power plants. Unlike general-purpose inner covers, its design, materials, and manufacturing processes are optimized for the core operating conditions of photovoltaic systems, including outdoor exposure, high-voltage DC, and complex weathering. Its core functions are to stabilize the installation of the fusible element, isolate dust and moisture, optimize DC conduction consistency, suppress and accelerate the extinguishing of the fusible arc, and prevent abnormal power supply, providing a fundamental guarantee for the safe and stable operation of the high-voltage DC system in photovoltaic power plants, and meeting the long-term outdoor service requirements of photovoltaic systems.
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- 24/7 Customer Service
Product Introduction
The Brass Inner Caps for PV Fuse is used in centralized and distributed photovoltaic power stations, as well as core photovoltaic equipment such as photovoltaic inverters and combiner boxes. It is also compatible with fuses used in smart grids, high-end electronic devices, and other power electronics fields. Addressing the core pain points of outdoor photovoltaic applications, this product effectively solves problems such as loose fuse installation, dust and moisture intrusion, slow DC arc extinguishing, and long-term overheating and aging of components. It also resolves issues such as insufficient consistency of batch products, delayed delivery, and difficulty in customization during engineering procurement. This provides a solid foundation for the safe and stable operation of high-voltage DC electrical systems in photovoltaic power stations, perfectly meeting the dual needs of long-term outdoor service and bulk procurement in engineering projects.
Material advantages
DC Electrical Compatibility
The product uses brass alloy with a conductivity ≥28MS/m, resulting in low conductive loss. This optimizes the DC conduction consistency of photovoltaic fuses, preventing localized overheating. It is compatible with 600V-1500V high-voltage DC transmission. Excellent anti-corona and insulation performance eliminates leakage risks and complies with IEC 60269-6-1 standards.
Weather and Thermal Compatibility
The product's brass has a thermal expansion coefficient of 16.5×10⁻⁶/K, ensuring precise matching with fuse elements and outer covers. This prevents deformation and loosening caused by outdoor temperature differences, guaranteeing stable long-term outdoor operation. It also resists high-temperature degradation without embrittlement or cracking.
Excellent Mechanical and Corrosion Resistance
The product's brass meets hardness and elongation standards, exhibiting good toughness and easy stamping and stretching without defects. Optional passivation/tin plating treatments are available. Excellent resistance to salt spray and damp heat provide protection against outdoor corrosion, making it suitable for various complex photovoltaic environments.
Environmentally friendly and compliant
The product materials comply with RoHS and REACH certifications, meet the environmental standards for photovoltaic electrical components, and can be directly matched with photovoltaic fuses for various projects without additional testing, reducing the compliance risks of engineering procurement.
Customization process
Drawing Submission and Requirements Confirmation: The client provides relevant PDF/CAD/3D drawings, specifying the product's ±0.03mm inner diameter tolerance, H62/H65 brass material, passivation/tin plating surface treatment, and batch production and photovoltaic outdoor compatibility requirements. Our team confirms the details to ensure the product is compatible with fuse assembly and outdoor service.
Process and Price Assessment: Utilizing our proprietary precision stamping and stretching processes, combined with the fuse's customized parameters, we analyze process feasibility, calculate mold requirements, man-hours, and product unit price, and generate a report to provide feedback to the client, answering questions related to product process, photovoltaic weather resistance, and cost.
Sample Order and Mold Prepayment: After the client approves the solution, a sample order is placed, with a 50% prepayment for the mold fee. Our company initiates the design and production of a dedicated fuse mold according to the ±0.005mm photovoltaic precision standard, ensuring compatibility and batch consistency.
Mold Production and Sample Trial Production: After mold completion, 1-20 free fuse samples are produced using stamping and stretching processes. Strict control is maintained over inner diameter tolerances and wall thickness uniformity (±0.02mm). Simulated photovoltaic (PV) operating conditions are used for testing to ensure compliance with customization and PV adaptation requirements.
Sample Testing and Final Payment: Samples are sent to the customer via express delivery for testing product compatibility and electrical performance with fuses. Upon successful testing, the customer pays the remaining mold fee. Our company retains the mold to ensure consistency in subsequent batch production.
Mass Production and Delivery Acceptance: Upon receiving a batch order and a 30% prepayment, our company begins mass production according to ISO9001 and IATF16949 standards, strictly controlling product details and providing test reports. Delivery and after-sales support are completed after the customer pays the final payment.
Application areas
Centralized PV Power Plant Core Equipment Support
Primarily supports key components such as combiner boxes and inverters for centralized PV power plants. Adaptable to high-voltage DC and harsh outdoor conditions, the products feature high-precision dimensions and compatible thermal expansion coefficients, ensuring stable and secure fuse installation, suppressing arcing, and meeting the 25-year lifespan requirement of power plants, thus reducing operation and maintenance costs.
Distributed PV Power Plant Full-Scenario Adaptation
Suitable for residential and commercial distributed PV power plants, supporting string inverters and grid-connected fuses. Products are flexibly adaptable to different specifications, with optional surface treatments to resist corrosion, optimize DC conduction, and ensure safe and stable power supply.
PV Supporting and Power Electronics Extension Applications
Extended applications include PV inverter and fuse manufacturing, adapting to smart grids and high-end electronic equipment. Products meet environmental certifications, insulation performance standards, and balance weather resistance and consistency. Customized adaptations are available.
competitive advantage
Leveraging years of experience in R&D of photovoltaic electrical components, we possess numerous industry-recognized patented technologies covering core areas such as precise Brass Inner Caps for PV Fuse structural design, precision manufacturing processes, and photovoltaic outdoor weather resistance adaptation. Combining full-process quality control, full-industry chain production capabilities, and 30 years of industry technical accumulation, we have formed a unique competitive advantage. This ensures that our products meet standards for dimensional accuracy, arc extinguishing performance, and 25-year long-term reliability. Furthermore, we optimize production efficiency and reduce costs through patented technologies, while providing customized solutions for our customers. Our products are superior to similar products in the industry in every aspect, solidifying our core competitiveness in photovoltaic engineering procurement and selection.
contact us
For inquiries regarding Brass Inner Caps for PV Fuse customization, selection and adaptation, or related technical questions, please feel free to contact us via the business card below. We will provide you with professional and efficient photovoltaic engineering support.
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