Ceramic Casing For Fuse Links
Ceramic Casing for Fuse Links is a key structural component of the fuse system. It is mainly used to accommodate the melt and arc-extinguishing medium to ensure that the fuse can safely and reliably break the circuit under overload or short-circuit fault conditions. This product is made of high-performance ceramic materials and sintered at high temperatures. It has excellent electrical insulation properties, thermal shock resistance and mechanical strength. It is widely used in fields such as power protection, new energy systems, rail transportation and industrial electrical equipment.
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Product Introduction
Ceramic Casing for Fuse Links
It is the core protection component in the high-voltage electrical system of new energy vehicles. It is a high-performance insulation and structural carrier specially designed for bolt-type fuses. This product uses advanced engineering ceramic materials and precision manufacturing technology to provide reliable electrical isolation, mechanical support and thermal management functions for the three electrical systems (battery, motor, electronic control) of new energy vehicles, ensuring the precise action of the fuse and system safety under extreme working conditions.
Detailed display
Precision of internal structure
Industrial CT scans show that the dimensional tolerance of the inner cavity is controlled at ±0.1mm, and the assembly gap of the Ceramic Tube for EV DC Fuse link is uniform. The 12 guide ribs are distributed in a spiral, and the forced convection heat dissipation efficiency is increased by 35%.
Surface treatment process
Verified by the visual inspection system, the glaze gloss is >90GU and there are no pinholes, bubbles, cracks, or other defects. The laser-engraved model identification and safety warnings are permanently clear and resistant to wiping with organic solvents.
Interface integrity
Ultrasonic testing confirmed that the ceramic-metal sealing interface has no delamination or bubbles, and the shear strength is >80MPa. The bonding strength of the metal terminal surface coating passed the cross-hatch test for the Ceramic Body for Fuse Bolted Series.
Environmental sealing
The helium mass spectrometry leak detection rate is <1×10⁻⁸ mbar·L/s, meeting IP6K9K high-pressure water spray protection requirements. The pressure decay method test confirmed that there is no leakage under the pressure difference cycle from -50kPa to +100kPa for 95% Alumina Ceramic.
Production process
Raw material pretreatment
Particle size distribution control (D50 controlled at 2.0–2.5μm), reducing sintering shrinkage anisotropy for Ceramic Body for Electric Vehicle Auxiliary Fuse.
01
Isostatic pressing enhanced molding
Improve green density uniformity and reduce internal stress for Ceramic Body for Overload and Short Circuit Protection Fuse.
02
High-temperature sintering curve
Segmented temperature rise and fall control is adopted to ensure uniform grain growth and avoid secondary recrystallization.
03
Dimensional finishing
For the bolt mounting holes and the inner cavity positioning surface, special CNC ceramic grinding is used, with a tolerance level of IT7 for 95% Alumina Ceramic.
04
Application scenario advantages
Battery pack main circuit protection
Support the rapid fusing; requirements of 800V high voltage platform; collaborate with the BMS system to achieve millisecond-level fault isolation; full life cycle status can be monitored for the Ceramic Tube for EV BS Series.
Motor controller protection
Mechanical stability in high-frequency vibration environments
Inverter-generated harmonic current tolerance, high temperature and high humidity motor cabin environmental adaptability.
Charging system protection
DC fast charging, high current surge resistance, liquid cooling system compatibility (IP67 protection level)
Charge and discharge cycle life＞100,000 times for Ceramic Body for Fuse Bolted Series.
Why choose us
Extreme bending strength
Unlike glass or ordinary plastic housings, our ceramic sleeves have extremely high flexural strength (usually >300MPa). This means that on an automated assembly line, even if the robotic arm exerts a large clamping force, or in the event of a vehicle collision, the casing can still remain intact, preventing the internal melt from shifting and causing a secondary short circuit for EV Fuse Ceramic Body.
Excellent arc extinguishing auxiliary performance
Ceramic materials release specific ions at high temperatures that help cool the arc plasma. The inner wall of our casing has been specially treated to form a synergistic effect with the quartz sand arc extinguishing agent inside to accelerate arc extinguishing, increase the breaking capacity to more than 100kA (depending on the specific design), and effectively protect expensive IGBT modules and battery packs.
Environmental adaptability
In view of the fact that the chassis of new energy vehicles is easily corroded by water mist and salt spray, ceramic bushings are naturally chemically inert. It does not absorb water, is resistant to acid and alkali corrosion, and can easily pass automotive-level environmental testing standards such as ISO 16750, ensuring safety throughout its life cycle for the Ceramic Tube for EV BS Series.
contact us
We do not participate in price wars, but you are welcome to put our ceramic housings into your fuse system for engineering benchmarking - please submit technical parameters or drawings below, and our Ceramic Casing for Fuse Links co-design team will provide a differentiation analysis report.
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