NH Fuse Links Knife
The NH Fuse Links Knife is a hot-forging contact knife designed specifically for NH-type square tube fuses in new energy (photovoltaic, energy storage, electric vehicles) and industrial power systems. It is a high-strength, low-resistance conductive terminal manufactured using a hot-forging process, and is a core structural component for achieving efficient energy transmission and reliable, safe disconnection in fuses.
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Product Introduction
The NH Fuse Links Knife, a red-charge contactor, is the core conductive and connecting component of the NH series fuses. It is compatible with various NH-type assemblies and is responsible for the precise connection between the fuse and external circuits (busbars, terminals, fuse holders), rated current carrying capacity, and auxiliary arc extinguishing support under short-circuit/overload conditions. As a key component for circuit protection, its structural precision, material properties, and manufacturing process directly determine the response efficiency and operational stability of the entire circuit protection system. It is a core component that requires careful consideration during engineering procurement and is widely used in critical equipment such as high-voltage circuits in new energy vehicles, photovoltaic combiner boxes, energy storage inverters, and low-voltage distribution cabinets.
Core Features
Structural Characteristics
Integrated hot-stamping molding, seamless construction, precise chamfering at the head for easy insertion and removal of NH fuse holders (insertion/removal force 15-30N, customizable), standardized tail interface compatible with various busbar terminals, convenient installation, secure connection, and reduced adaptation difficulty.
Electrical Characteristics
Normal temperature contact resistance ≤5mΩ, rated current 63A-1250A, voltage coverage AC 400V-1000V/DC 500V-1500V, overload capacity up to 1.5 times rated current, temperature rise ≤30K, meeting the parameter requirements of various high-voltage and traditional power electronics scenarios.
Environmental Adaptability
Temperature resistance -40℃~125℃, able to withstand various extreme operating conditions; waterproof and dustproof to IP54 with fuse assembly, salt spray resistance ≥96 hours, suitable for harsh industrial environments, ensuring long-term stable operation.
Adapted for high-voltage circuit protection in new energy passenger vehicles and commercial vehicles, this core contact component of the NH fuse is used in key equipment such as power battery packs, MCUs (motor controllers), OBCs (on-board chargers), and PDUs (high-voltage power distribution units), and is compatible with the parameter requirements of 800V high-voltage fast charging platforms.
Main Circuit
Compatible with NH fuses with a rated current of 300-700A, providing high current carrying capacity and short-circuit protection during the charging and discharging of the power battery, preventing irreversible damage to the battery pack caused by overload or short circuit.
Auxiliary Circuit
Compatible with NH fuses with a rated current of less than 100A, used for circuit protection of electrical loads such as air conditioners, PTC, and DC/DC converters, ensuring stable operation of auxiliary equipment.
Application Advantages
High temperature resistance, vibration resistance (meets automotive operating conditions), low contact resistance, able to withstand instantaneous high current surges, suitable for harsh automotive operating conditions with high voltage, high temperature, and high vibration, while meeting the IATF16949 automotive industry quality standard.
Our Partners
To address the core needs of engineering procurement-stable bulk supply, controllable quality, guaranteed delivery, and manageable risks-we leverage our group strength, comprehensive industry chain layout, and standardized management system. We manage risks across the entire production and supply process of NH Fuse Links Knife hot-pressing contact tools, controlling risks from manufacturing, supply, and service perspectives to ensure worry-free procurement. Simultaneously, we maintain long-term, successful partnerships with leading companies in the industry, serving top clients across multiple sectors. Our stable quality, efficient delivery, and professional support have earned our trust. We optimize products and supporting services to meet stringent client standards, enabling rapid response to customized needs. Furthermore, the backing of our partnerships reduces the selection risks for new clients, providing cost-effective solutions and achieving a win-win situation for both supply and demand.
Contact Us
If you have any questions about the procurement, selection, customization, and supply of NH Fuse Links Knife red-hot contact blades, please feel free to contact us. Leveraging the strength of our group, our advantages across the entire industry chain, and 30 years of experience, we can provide you with professional services and cost reduction solutions to help your projects be successfully implemented.
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