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Our 11kV High Quality Fuse Cutout for Overhead Line is a premium expulsion fuse cutout purpose-built for 10kV to 38kV overhead power line protection and sectionalizing. As the most widely used protective switch for overhead line branch circuits, this outdoor high voltage fuse cutout delivers exceptional short-circuit protection, load breaking, and line switching performance, with outstanding adaptability to harsh outdoor environments. Designed for overhead line infrastructure, it is widely installed on overhead distribution lines and pole-mounted distribution transformers, providing reliable overcurrent protection and flexible switching operations for power utility operators, overhead line engineering contractors, and rural electrification project developers.
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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This overhead line fuse cutout is engineered for long-term reliable operation in harsh outdoor overhead line scenarios. Porcelain insulators adopt US-sourced CGM INC por-rok anchoring cement for firm bonding between porcelain body and hardware, with superior weather resistance and low expansion performance. Polymer insulators use high-temperature vulcanized silicone rubber for one-piece injection molding, with excellent tracking and erosion resistance for high UV, coastal, and high-altitude overhead lines. All ferrous components have a hot-dip galvanized zinc layer exceeding 86μm, delivering exceptional corrosion resistance for long-term outdoor exposure.
Our 11kV high quality fuse cutout for overhead line features an innovative single vent structure, with downward and outward exhaust during fault interruption to prevent rainwater ingress and avoid damage to upper overhead line conductors from arc gas. This design significantly improves interrupting capacity, ensuring safe operation even in extreme weather. The arc-shortening copper rod enhances short-circuit breaking performance, while the reinforced nylon arc chamber for loadbreak models offers excellent flame retardant and anti-aging properties, perfectly adapting to the variable conditions of overhead line operation.
All copper cast components use high-performance bronze/brass, with silver-plated convex contact surfaces to minimize contact resistance and maintain stable conductivity during long-term overhead line operation. High-strength memory copper alloy sheets ensure seamless and stable contact with the lower terminal, even after repeated fuse drop-out operations, eliminating contact failure risks for remote overhead lines that are difficult to maintain frequently.
Short-circuit and overcurrent protection for 11kV overhead distribution line branch circuits
Primary side protection for pole-mounted distribution transformers on overhead lines
Sectionalizing and load switching for long-distance overhead transmission and distribution lines
Overhead line protection for rural electrification projects and remote area power supply systems
Capacitor bank protection on overhead line networks in high UV, coastal, and high-altitude regions
We provide targeted customization for our 11kV overhead line fuse cutout to meet the specific needs of overhead line projects, including adjustable rated voltage and current, customized creepage distance for harsh environments, optional porcelain or polymer insulators, configurable arc-shortening rods, and various mounting bracket types for different pole installations. We support large-volume bulk supply for overhead line construction and renovation projects, with a flexible production schedule to ensure on-time delivery, and full batch testing to guarantee consistent performance across every unit.
HAIVOL is a specialized manufacturer of high voltage fuse cutouts with deep expertise in overhead line protection solutions. Our 11kV high quality fuse cutout for overhead line is developed based on decades of field experience in overhead line operation, with optimized design for outdoor harsh environments and frequent load switching. We have a complete quality management system, with each product undergoing strict performance testing before delivery, and a professional technical team providing full-cycle technical support, from project parameter matching to after-sales maintenance guidance, helping you improve the reliability of overhead line networks and reduce operation and maintenance costs.
Yes, our overhead line fuse cutout is specially designed to adapt to high-altitude, high UV, and coastal harsh environments, with customizable creepage distance and insulation materials to meet high-altitude operation requirements.
Yes, when used with a portable loadbreak tool, it can function as an overhead line disconnect switch for line sectionalizing and switching operations.
We support a customizable minimum creepage distance up to 900mm, which can fully meet the insulation requirements of overhead lines in heavily polluted and coastal areas.
