End Tag Copper
Products Description
End Tag Copper (copper end cap) is a conductive contact component used for current connections. Its core functions are:
Providing a stable, low-loss conductive path
Forming safe and reliable mechanical and electrical contact with mating components
Acting as a current-carrying node to withstand instantaneous inrush currents and high-repetition-frequency switching pressures
Maintaining conductivity and mechanical properties without degradation in high-temperature, high-vibration, and high-humidity environments.
Material Advantages: Dynamic Performance Optimization and Functional Upgrade of T2Y2 Copper
Dynamic Conductivity Stability
Optimized grain orientation through directional forging results in a resistivity ≤0.0169Ω・mm²/m in the conductive direction, a 1.7% reduction compared to ordinary T2 copper. Even when the Fuse Contact area changes due to insertion/removal vibration, it maintains stable current transmission, avoiding localised heat accumulation-especially suitable for frequent start/stop of fuses in new energy vehicles and maintenance insertion/removal scenarios in energy storage modules;
Fatigue Resistance Mechanical Properties
Elongation ≥38%, tensile strength ≥220MPa. Low-temperature annealing (280℃/3h) eliminates processing stress, increasing bending fatigue strength by 40%, capable of withstanding 10,000... After more than 200 insertion/removal cycles or vibration impacts, Fuse Terminal Contact exhibits no breakage or permanent deformation, addressing the pain points of traditional contact blades such as "easy deformation during insertion/removal and easy breakage due to fatigue."
Low friction and wear resistance
The original texture of copper is soft and has excellent toughness. After surface treatment, the coefficient of friction is reduced to below 0.15. During insertion/removal, there is no scratching of mating components (such as fuse leads and contacts), while the wear amount itself is reduced by 60%, avoiding the increase in contact gap due to wear.
Technical Features: The Precision Aesthetics of Fine Blanking
Our core technology lies in pushing the forming of sheet metal to its limits.
Fine Blanking Technology: Unlike ordinary stamping, fine blanking separates material under triaxial stress, resulting in clean, perpendicular cuts free of tear bands and burrs, achieving a precision of IT6-IT7. This is an indispensable process for styluses requiring perfect contact surfaces.
The Art of Balancing Hardness and Elasticity: By precisely controlling the hardening degree of cold rolling and subsequent stress-relief annealing, we can achieve the optimal balance between strength, hardness, conductivity, and elasticity in T2 copper, creating a perfect blend of rigidity and flexibility.
Composite Forming Process: For complex-shaped styluses, we combine fine blanking, bending, and stamping processes within a single mould, ensuring the relative positional accuracy between various features.
Application Scenarios: Precise Protection for Industrial Electrical Systems
High-Voltage Circuit Breakers
In high-voltage circuit breakers above 12kV, the contacts withstand frequent opening and closing operations (100+ times per day). Our Fuse End Tag maintains stable contact resistance, preventing arcing and overheating due to poor contact, extending circuit breaker life by 30%. A power equipment manufacturer's actual test showed that after using these contacts, the high-voltage circuit breaker failure rate decreased from 0.8% to 0.2%.
Industrial Switchgear
In industrial switchgear in steel mills and chemical plants, Fuse End Blade Ferrules need to withstand frequent operation and vibration environments. Adaptive contact design ensures stable contact even under vibration, preventing loosening due to vibration. In a steel mill project, switchgear downtime due to failure was reduced by 75%.
Automation Control Systems
In PLC control systems, Copper Sheet Fuse Parts act as signal switching points, requiring extremely low and stable contact resistance. Our contacts improve signal switching reliability to 99.999%, preventing control failures due to poor contact and ensuring continuous production line operation.
Power transmission equipment
In the power transmission switching equipment of substations, the contact blades need to operate stably under high current. Their low contact resistance reduces temperature rise by 20%, preventing equipment failure due to overheating and improving system energy efficiency.
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