Introduction
Ceramic fuse holder serve as crucial components in EV fuses, providing essential thermal and electrical insulation properties. They are instrumental in protecting electrical circuits from overcurrents and short circuits, thereby enhancing the overall reliability of electric vehicles.
Features
• High density and strength
• Heat-resistant, corrosion-resistant and highly insulating
• Excellent current-limiting characteristics, high breaking capacity, and rapid response to breaking
Applications
New energy system, power and electrical equipment, energy storage support
Material properties
| Material | Unit | Al 2 O 3 | ZTA | AlN | Si 3 N 4 |
| Effective dimensions ( A , B ) | mm | 50.8-190 | 50.8-190 | 50.8-190 | 138*190 |
| Thickness ( T ) | mm | 0.25-1.5 | 0.25-1.5 | 0.25-1.0 | 0.25 , 0.32 |
| Thickness tolerance | mm | ±5% ( Min±0.03mm ) | ±5% ( Min±0.03mm ) | ±5% ( Min±0.03mm ) | ±5% ( Min ±0.03mm ) |
| Warpage ( C ) | mm | ≤0.3% | ≤0.3% | ≤0.3% | ≤0.3% |
| surface roughness | μm | 0.2-0.6 | 0.2-0.5 | 0.2-0.75 | 0.2-0.75 |
| Size, thickness and surface roughness can be customized | |||||
Product shape and specification
1.Square tube
2.Round tube
Declaration: This is an original article of INNOVACERA®. Please indicate the source link when reprinting: https://www.innovacera.com/product/ceramic-fuse-holder
Frequently Asked Questions
Why Are High-Purity Alumina Ceramic Fuse Holders Essential in EVs? How Do They Prevent Arc Explosions?
In electric vehicles and high-voltage DC battery packs, severe short-circuit currents trigger explosive electric arcs and massive internal pressure waves. Conventional plastic or lower-grade insulators easily carbonize, melt, or burst under these conditions. INNOVACERA’s high-purity alumina ceramic fuse holders provide superior dielectric breakdown strength, exceptional thermal stability, and high mechanical burst resistance. They contain violent arc energy during fault clearing, guaranteeing high breaking capacity, zero conductive tracking, and fast circuit interruption for battery safety.
Need Square or Round Profiles for Energy Storage Systems? How to Source Custom Ceramic Fuse Bodies from INNOVACERA?
INNOVACERA manufactures both precision square and round ceramic fuse tubes tailored to various fuse-link architectures and metal end-cap assemblies. Customers can custom outer dimensions, internal cavities, wall thicknesses, and high-strength materials (including Al2O3 and ZTA) to meet demanding breaking-capacity ratings across electric vehicles, solar PV inverters, and utility-scale energy storage systems.
