Fuse Knife
Products Description
The core value of the smart fuse knife lies in its "electrochemical interface stability." Traditional contacts form an oxide layer (Cu₂O) upon exposure to air, significantly increasing contact resistance. Our product, however, utilizes a silver-copper-tin ternary alloy design to create a dense silver-tin oxide protective layer (Ag₂O/SnO₂) on the surface. This layer possesses semiconductor properties, automatically inhibiting further oxidation while maintaining a low-resistance conductive path. This design reduces contact resistance fluctuations by 90% during frequent operation (>1000 times/year), transforming the contact point from a "failure source" to a "stabilizing source."
Main Functions: Focusing on Core Circuit Protection Needs
Low-Resistance Conductivity
High-conductivity materials and optimized fuse terminal structures achieve low-loss, heat-free transmission under normal circuit conditions, ensuring a stable power supply to equipment and avoiding energy waste due to excessive contact resistance.
01
Precise Fuse Triggering
Customized dimensions and materials based on the circuit's rated current enable rapid fuse response during overload/short circuits, cutting off faulty circuits and protecting downstream equipment from damage.
02
Stable Contact
Flexible fuse blade design and fatigue-resistant structure ensure no poor contact during insertion/removal and vibration environments, preventing intermittent power outages or overheating.
03
Environmental Protection
Surface plating and passivation treatment resist oxidation, corrosion, high and low temperatures, and other harsh environments, extending product lifespan and ensuring reliable protection in different scenarios.
04
Assembly Adaptability
Multi-specification and multi-structure design adapts to different types of fuses and fuse holders, facilitating installation, improving circuit assembly efficiency, and reducing labor costs.
05
Detailed Specifications
Visual
The surface of the contact blade is mirror-like, with a uniform coating, free from peeling or pitting. The edges are smooth, without any burrs. The necking transition at the melting point is smooth, and the cross-sectional shape is clear and consistent. The laser markings are clear and of appropriate depth.
Tactile
Touching the edges with fingertips reveals no sharp burrs. The surface feels warm and smooth.
Performance
On a short-circuit test bench, the melting process is crisp and clean, the arc extinguishes in a very short time, and the fracture surface is smooth with no metal spatter. In temperature rise testing, its temperature remains stable well below the standard limit for copper contact.
Application Value: Empowering All Scenarios from High-Voltage Switchgear to Future Electronics
| High-Voltage Switchgear | In 10kV switchgear, it solves the problem of contact resistance fluctuations caused by blade fuse terminal micro-movements. After application, a power equipment manufacturer saw its equipment failure rate drop from an average of 5.2 times per year to 0.3 times, extending equipment lifespan by 30%. |
| Power Electronic Converters | In photovoltaic inverters and wind power converters, the high-frequency adaptability of ternary alloys improves system efficiency by 1.5% and reduces thermal management costs. |
| 5G Communication Base Stations | At high-frequency RF connection points, it solves the problem of signal attenuation caused by micro-movements, improving base station stability. |
| Precision Instruments | At high-precision blade contact points in semiconductor equipment, it achieves 0.1mΩ-level contact resistance stability, ensuring process precision. |
| Electric Vehicle High-Voltage Systems | At high-voltage connection points in battery management systems (BMS), it prevents contact failures caused by vibration, improving system safety levels. |
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