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HV-8
The 11kV Ceramic High Voltage Drop Out Fuse Cutout (Model HV-8) from HAIVOL is a specialized expulsion-type protection device, purpose-built for 10kV to 38kV overhead power distribution systems operating in harsh outdoor environments. As a premium porcelain-based drop out fuse cutout, it delivers robust short-circuit and overcurrent protection for distribution transformers, overhead line branches and critical power equipment, while doubling as a reliable sectionalizing device for grid isolation and maintenance. Designed for use with portable loadbreak tools, it operates as a high-performance overhead line disconnect switch, catering to the needs of power utilities, industrial power system operators, renewable energy project contractors and heavy industrial electrical engineering firms. This ceramic high voltage fuse cutout is optimized for extreme conditions, delivering uncompromising reliability in high-UV, high-altitude, coastal and corrosive operating environments.
Rated voltage(KV) | Rated current(A) | Rated interrupting current(KA) | Lightning impulse withstand voltage to ground (BIL KV) | Minimum power frequency withstand dry voltage to ground (KV) | Minimum creepage distance(mm) |
11-15 | 100/200 | 12 | 110 | 42 | 220 |
11-15 | 100/200 | 12 | 125 | 50 | 320 |
24-27 | 100/200 | 12 | 150 | 65 | 470 |
33-38 | 100/200 | 8 | 170 | 70 | 660 |
33-38 | 100/200 | 8 | 170 | 70 | 720 |
33-38 | 100/200 | 8 | 170 | 70 | 900 |
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At the core of this 11kV ceramic drop out fuse cutout is a high-grade porcelain insulator, bonded to metal fittings using USA-sourced CGM INC por-rok anchoring cement. This premium bonding material delivers ultra-low expansion coefficient, exceptional mechanical strength and unmatched weather aging resistance, ensuring zero delamination or degradation even after decades of outdoor exposure. The porcelain body provides superior dielectric performance, tracking resistance and resistance to environmental contaminants, outperforming alternative materials in corrosive coastal and industrial environments.
The proprietary single-vent design of this expulsion fuse cutout directs exhaust downward and outward during fault interruption, eliminating rainwater ingress and preventing upstream line damage from arc byproducts. This design significantly boosts interrupting capacity, while the integrated arc-shortening copper rod rapidly quenches short-circuit arcs, minimizing fault duration and equipment damage risks.
All ferrous structural components undergo hot-dip galvanizing with a uniform zinc coating exceeding 86μm, delivering exceptional rust and corrosion resistance for long-term outdoor use. All current-carrying components are precision-cast from high-grade bronze or brass, with silver-plated convex contact surfaces to reduce contact resistance and maintain stable conductivity. High-strength memory copper alloy contacts ensure uninterrupted electrical connection, even during fuse element dropout, eliminating contact failure and unplanned outages.
This ceramic expulsion fuse cutout is engineered for demanding applications, including primary side protection for distribution transformers in coastal, high-altitude and high-UV regions, overcurrent protection for overhead line branches in industrial and mining power systems, protection for capacitor banks in heavy industrial facilities, line sectionalizing for renewable energy grid connection systems, and backup protection for critical power infrastructure in harsh industrial environments.
We provide tailored customization for this ceramic fuse cutout to meet the unique requirements of your heavy-duty projects, with full support for large-scale bulk orders for grid modernization, industrial plant upgrades and renewable energy projects. Customizable options include rated voltage and current ratings, minimum creepage distance for specific pollution levels, porcelain insulator grade, arc-shortening rod integration and custom mounting bracket designs. We maintain dedicated bulk production capacity and inventory to ensure reliable on-time delivery, with specialized engineering support for custom specification validation and project-specific adaptation.
HAIVOL is a leading specialist in high-voltage ceramic protection equipment, with all our ceramic high voltage drop out fuse cutouts manufactured and tested in strict compliance with IEC 60282-2:2008, IEEE Std C37.41-2008 and IEEE Std C37.42-2009 international standards. We specialize in porcelain insulator manufacturing, with decades of expertise in delivering products that excel in the harshest operating environments. Our end-to-end quality control process covers raw material inspection, precision manufacturing and full performance testing for every unit, ensuring consistent reliability and long service life. Our dedicated technical team provides specialized support for ceramic insulator selection, environmental adaptation and after-sales service, making us the trusted partner for your critical power protection projects.
The high-grade porcelain insulator offers superior dielectric strength, tracking resistance and resistance to salt spray, industrial pollutants and UV radiation, making it ideal for coastal, high-altitude and heavily polluted industrial environments where alternative materials may degrade rapidly.
The HV-8 model is available in 100A and 200A rated current configurations, compatible with 10kV to 38kV power distribution systems, with standard 11kV configurations optimized for both current ratings.
Yes, when paired with a compatible portable loadbreak tool, the HV-8 ceramic fuse cutout supports safe loadbreak operations, acting as a reliable disconnect switch for line maintenance, equipment isolation and load management.
