High-Speed Fuse Contact
Products Description
In high-voltage, high-frequency switching and transient inrush current environments, fuses not only perform protective tasks, but the conductivity, thermal stability, and structural reliability of their internal contacts directly determine the system's safety margin. High-Speed Fuse Contact, as the core conductive unit of the fuse, must achieve an engineering-grade balance between low resistance, high mechanical strength, and a stable contact interface.
This product uses T2Y2 copper and H65 brass as base materials, combining cold pressing, hot stamping, and high-precision CNC machining in a multi-process composite manufacturing path. It is specifically customized for high-performance fuse systems, meeting the stringent reliability and consistency requirements of engineering customers.
Design Advantages: From Electromagnetic Compatibility to Thermodynamic Equilibrium
Low Inductance Geometry
Optimized contact blade shape to reduce the tendency effect under high-frequency currents, ensuring that fault currents can quickly trigger the fuse mechanism.
Enhanced Heat Dissipation Area
Through simulation design, the effective contact area at the connection between the Fuse Blade Contact and the base is increased, improving the heat conduction path and making the fuse cooler under rated current.
Anti-Misalignment and Self-Centering Design
Optimized geometric guide slope for automated assembly lines ensures precise, low-resistance physical closure when replacing fuses.
Material Advantages: The "Art of Compromise" Between T2Y2 and H65 in Electrical and Mechanical Aspects
Material selection is the fundamental code for Fuse Contact Blade performance. Through precise control of material state, we have achieved a delicate balance between conductivity and mechanical strength.
T2Y2 Copper: The "High Conductivity-Flexibility" Balance in a Semi-Hard State: Pure copper has excellent conductivity, but soft pure copper is prone to plastic deformation under short-circuit electrodynamic forces. Our selected T2Y2 copper (Y2 represents the semi-hard state), through specific cold work hardening control, retains 99.9% high conductivity while raising tensile strength to a critical threshold. This semi-hard state characteristic gives it a "springback" tendency when subjected to huge mechanical impacts, rather than permanent yielding, perfectly meeting the stringent requirements of high-rated current fast melting.
H65 Brass: The "Skeleton" of Structural Support and Elastic Compensation: In scenarios with extremely high mechanical strength requirements or as Metal Copper Blade reinforcing ribs/positioning structural components, H65 brass demonstrates its unique value. Although its conductivity is lower than that of copper, H65 possesses excellent machinability, strong resistance to stress relaxation, and good elastic modulus. It plays the role of a "mechanical skeleton" in the contactor system, ensuring that the contactor maintains a constant contact pressure with the external socket under long-term thermal expansion and contraction cycles and high-frequency micro-vibration environments.
Applications in the New Energy Vehicle Sector
Power Battery System Protection
T2Y2 copper contacts are used for the main circuit protection of the battery pack. Their low-resistance design reduces power loss, increasing range by 5-8%, while also withstanding high current surges (above 5000A) during short-circuit faults, preventing thermal runaway and fires.
Motor Controller Protection
H65 brass contacts are used to connect the motor controller and inverter. They balance conductivity and mechanical strength, resisting vibration and shock, adapting to continuous bumps during vehicle operation, and reducing the failure rate by 20%.
Fast Charging System Applications
T2Y2 copper NH Fuse Links Knife are suitable for 350kW fast charging scenarios. Their high current-carrying capacity (above 500A) and rapid heat dissipation ensure safety and stability during fast charging, shortening charging time.
High-Voltage Power Distribution System
Cold-pressed Fuse Terminal is suitable for mass production, offering low cost, while meeting high-voltage (1000V-1500V) insulation requirements, making them suitable for large-scale applications in high-voltage power distribution systems for new energy vehicles.
contact us
If you are evaluating a high-reliability Copper Blade for a Fast Fuse solution, we can provide customized engineering design and rapid prototyping support based on your application conditions and structural requirements. You are welcome to submit drawings or technical parameters to enter the inquiry channel.
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