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Our 11kV Outdoor Expulsion Drop-out Type Fuse Cutout is a multifunctional loadbreak protective device, purpose-built for 10kV to 38kV overhead distribution systems. As the industry’s preferred drop-out fuse cutout for overhead line sectionalizing and distribution transformer protection, this solution combines reliable short-circuit protection with flexible loadbreak capability, delivering exceptional operational flexibility and safety for outdoor power distribution. Equipped with a specialized arc chute, it can be used with a portable loadbreak tool to perform the function of an overhead line disconnect switch, expanding the versatility of your distribution protection system. All our loadbreak fuse cutout products are manufactured and fully tested in strict accordance with IEC 60282-2:2008, IEEE Std C37.41-2008, and IEEE Std C37.42-2009, ensuring full compliance with global power industry safety and performance standards.
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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The core advantage of our 11kV outdoor expulsion drop-out type fuse cutout is its reliable loadbreak performance. The arc chamber of this loadbreak fuse cutout is made of special reinforced nylon material, featuring exceptional mechanical strength, anti-aging, and flame-retardant properties, making it perfectly suited for high ultraviolet, high altitude, and coastal areas. This design enables safe on-load switching operations, eliminating the need for additional disconnect switches in most distribution scenarios.
This drop-out fuse cutout adopts a proprietary single-vent structure, which exhausts arc gas downward and outward during interruption, effectively preventing rainwater intrusion and upper line damage from arc byproducts, while significantly improving fault interrupting capacity. An integrated arc-shortening copper rod accelerates arc extinction during short-circuit faults, minimizing equipment damage and power outage duration.
All copper components are fabricated from high-grade bronze/brass, with silver-plated convex contact surfaces to reduce contact resistance and maintain stable conductivity in harsh environments. High-strength memory copper alloy sheets ensure consistent, seamless contact with the lower terminal, even after hundreds of drop-out operations. All ferrous parts are treated with hot-dip galvanizing (zinc coating over 86μm), delivering superior corrosion resistance for long-term outdoor use.
Ideal for power distribution utilities, electrical engineering contractors, renewable energy project developers, and industrial facility operators, our 11kV outdoor expulsion drop-out type fuse cutout serves core scenarios including:
Overhead distribution line sectionalizing and short-circuit protection
On-load switching and protection for ring network distribution systems
Primary side protection for distribution transformers in remote and harsh environments
Protection for photovoltaic and wind power generation grid-connected systems
Temporary power distribution protection for construction and infrastructure projects
Capacitor bank protection in outdoor substations
We provide comprehensive customization for our expulsion drop-out fuse cutout to meet diverse project needs, including custom rated voltage and current, tailored creepage distance for different pollution levels, optional arc chamber configurations, arc-shortening rod installation, and custom mounting bracket designs. For commercial and industrial bulk orders, we offer dedicated project management, fixed lead time guarantees, full batch type testing reports, and custom packaging solutions, alongside OEM/ODM services to meet your brand and project specifications.
HAIVOL is a specialized manufacturer of high-voltage drop-out fuse cutouts, with years of experience delivering reliable solutions to global power distribution clients. Our 11kV outdoor expulsion drop-out type fuse cutout stands out for its industry-leading loadbreak technology, full international standard compliance, 100% pre-delivery performance testing, extreme environment adaptability design, dedicated technical support team, and stable production capacity to fulfill large-volume bulk orders with on-time delivery.
Yes, when used with a portable loadbreak tool, our loadbreak fuse cutout can perform the same function as an overhead line disconnect switch, enabling safe on-load sectionalizing operations.
The arc chamber is made of special reinforced nylon material, with excellent mechanical strength, anti-aging, and flame-retardant properties, suitable for harsh outdoor environments.
It is designed for outdoor use, with exceptional adaptability to high ultraviolet, high altitude, coastal, industrial pollution, and other harsh environmental conditions.
We use high-strength memory copper alloy sheets for the contact system, which maintain consistent contact pressure even after repeated drop-out operations, eliminating contact failure risks in long-term operation.
