Analysis of 1500A breaking capacity of Fuse ceramic tubes under high voltage scenarios

To achieve reliable circuit breaking of 1500A, Fuse ceramic tubes need to focus on meeting three core requirements: high temperature stability, insulation strength, and thermal conductivity efficiency. In terms of high temperature stability, the electric talc ceramic fuse body can withstand high temperatures of 1200 ℃, which is crucial for extinguishing the arc when the 1500A current is disconnected. If low-temperature materials are used, they are prone to melting and causing arc leakage, leading to system failures;

In terms of insulation strength, the dielectric strength of electrical ceramics exceeds 20kV/mm, which can effectively prevent insulation breakdown under high current of 1500A and avoid secondary short circuits after breakdown; The thermal conductivity efficiency requires the Fuse ceramic body for bussmann to have a thermal conductivity of 1.5-2.0 W/(m · K). Efficient thermal conductivity can quickly dissipate the heat generated by the arc, prevent the shell from cracking due to thermal shock, and ensure the stability of the circuit breaking process.

Fuse ceramic tubes with a 1500A breaking capacity have strict material performance standards.

Firstly, the arc resistance needs to reach a high level, and the Square ceramic body needs to be able to resist arc erosion. During the 1500A circuit breaking process, the arc will not damage the inner wall of the sleeve, ensuring that the shell can be reused safely;

Secondly, it has low thermal expansion characteristics. The thermal expansion coefficient of talc ceramics used in electric vehicles should be ≤ 5 × 10 ⁻⁶/℃ to avoid deformation of the Electrical steatite ceramic fuse body and affect the circuit breaking effect when the arc heat rises sharply;

Thirdly, sufficient mechanical impact resistance is required. The compressive strength of the casing must exceed 250MPa and be able to withstand the mechanical impact generated by arc explosion during 1500A circuit breaking to prevent damage to the shell.

In addition to material properties, the structural design optimization of the Steatite ceramic for EV fuse is also key to improving the 1500A circuit breaking capacity. In terms of cavity volume design, the internal cavity volume of the 1500A fuse housing should be ≥ 15cm ³, with sufficient space for the arc to fully expand and cool, avoiding arc reignition and ensuring complete circuit breaking;

In terms of heat dissipation channel layout, adding 3-4 axial heat dissipation slots on the outer wall of the shell can increase the heat dissipation area by 30%, accelerate arc heat dissipation during 1500A circuit breaker, and reduce the shell temperature; In terms of improving sealing performance, IP65 grade silicone gaskets are used at the housing ports to effectively block external dust and moisture from entering, ensuring that the Din type steatite ceramic HRC fuse body can maintain a stable 1500A circuit breaking capacity even in harsh environments.

The Ceramic HRC fuse body with a breaking capacity of 1500A is widely used in various high-voltage electrical systems, especially playing an important role in emerging high-end fields. In the 800V electric vehicle battery pack, the electrical ceramic shell can ensure the safe disconnection of current in case of short circuit, protecting the battery pack and the overall electrical system of the vehicle;

In energy storage converters above 500kW, the Alumina ceramic sleeve tube for high voltage EV fuse can effectively handle 1500A surge current, avoiding damage to equipment caused by surges; In a 480kW high-power charging station, the electric talc ceramic fuse body can maintain stable performance under long-term high load operation, ensuring the safe and efficient operation of the charging station. These scenarios highly rely on the reliable breaking ability of the ceramic shell to safeguard system safety.

If you need to know the detailed parameters and customized solutions of Fuse ceramic tubes, or have inquiries about 1500A circuit breaking capacity related products, please feel free to contact us at any time. We will provide you with professional technical support and precise product solutions to assist in the stable operation of your high-voltage electrical system.