Knife Blade Contact Fuse Cap
This type of fuse cap is specifically designed to protect electrical systems in various industries from overloading and short-circuiting, and its reliable performance makes it a popular choice for a wide range of applications.
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Product Introduction
The bolted DC fuse utilizes the knife blade contact fuse cap, where the end cap plays a crucial role in maintaining the fuse tube's stability. The use of low-quality copper caps can cause the tube fuse to come off the cap easily. Our copper caps are produced through independent stamping processes, carried out in specialized workshops equipped with advanced high-speed stamping equipment to ensure precision and consistency in the copper cap's size.
Products parameters
Material for Fuse Cap
Red copper T2Y2 performs well in electrical and thermal conductivity, and has good corrosion resistance and processing properties, making it very advantageous in welding and brazing applications. Due to its excellent conductivity, red copper T2Y2 is widely used in the manufacture of knife blade contact fuse caps to ensure the stability and safety of the product in high temperature and high current environments. In addition, due to its good processing properties, the product is easier to form and weld during the production process, which improves the reliability and service life of the connector.
| Trade Mark | State | Tensile Strength(Mpa) | Elongation | Hardness(HV) |
| TU0, TU1, TU2 | M(Soft) | ≥195 | ≥30 | ≤70 |
| C10100,C10200,C11000 | Y4(1/4 Hard) | 215-275 | ≥25 | 60-90 |
| T1,T2 | Y2(1/2 Hard) | 245-345 | ≥8 | 80-110 |
| C1020,C1100,C1201 | Y(Hard) | 295-380 | 3 | 90-120 |
| TP1,TP2 | T(Ultrahard) | 350 | -- | ≥110 |
Surface Treatment for End Cap
The nickel-plated end cap has a thin passivation film on its surface that provides strong protection against atmospheric corrosion, alkalis, and some acids, owing to the excellent passivation ability of nickel metal. The hardness of the nickel coating is relatively high, which enhances the surface wear resistance of the product and thereby increases the lifespan of the fuse link.
Products application
High-voltage direct current is used for energy storage in new energy vehicles, with over-current protection mainly provided by high-performance fuses. The circuit is subject to a complex working environment during the vehicle's long-term operation, withstanding mechanical vibration, temperature changes, chemical corrosion, current impact, vehicle collisions, and other conditions, which can easily cause short-circuit faults. In the vehicle's current system, a short-circuit accident may produce a short-circuit current of over 10kA, which cannot be reliably broken off by other current vehicle devices. A short-circuit current lasting for tens of milliseconds can destroy important components in the vehicle system loop, such as power batteries, wires, and load devices, resulting in major economic losses. It can also lead to fire and cause secondary injuries, endangering life safety. Fuses can quickly cut off the circuit when a short-circuit current occurs, preventing the expansion of the accident and protecting property. They are an essential safety protection device in the circuit system of new energy electric vehicles.
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