50kv-60kv High Voltage Ceramic Drop Fuse Holder Current Limiting Porcelain Drop Fuse Cutout Switch Power Fuses

Product Description

Product Description

The Outdoor Dropout Fuse (Polymeric Insulated) is a high-voltage protection device widely used in distribution systems, designed to protect transformers, lines, and electrical equipment from overloads and short-circuit faults. Engineered for outdoor applications, it combines overload protection, short-circuit breaking, and visible isolation functions, ensuring safe and reliable operation in power distribution networks.
With a lightweight polymeric (composite) insulation structure and corrosion-resistant hardware, this fuse ensures stable performance in harsh outdoor environments. It features a quick dropout mechanism-when an overcurrent occurs, the fuse element melts and triggers the switch to drop, disconnecting the circuit and providing a visible isolation point for maintenance.
Key Features of Outdoor Dropout Fuse (Polymeric Insulated)
Visible Fault Isolation
The fuse drops automatically after tripping, providing a clear visual indication of a fault, which simplifies troubleshooting and ensures safety during maintenance.
Lightweight Polymeric Insulation
Adopts weather-resistant composite material (instead of traditional porcelain), offering excellent insulation performance, UV resistance, and corrosion resistance while reducing overall weight for easier installation.
Reliable Overload/Short-Circuit Protection
Equipped with a high-performance fuse element that responds quickly to overcurrents, effectively protecting downstream equipment from damage.
Simple Installation & Operation
Features a compact, clamp-type structure that can be directly mounted on distribution poles; the dropout design allows for quick replacement of the fuse element.
Long Service Life
Uses silver-plated contacts and anti-corrosion hardware, ensuring stable electrical conductivity and mechanical durability even in harsh outdoor conditions.
Environmental Conditions for Use
Installation altitude: Not exceeding 1000 meters (can be customized for higher altitudes).
Ambient temperature range: -40°C to +40°C.
Relative humidity: Daily average ≤95%, monthly average ≤90%.
Seismic resistance: Capable of withstanding earthquakes up to magnitude 8.
Applicable environment: Suitable for outdoor areas without severe chemical corrosion, heavy dust, or intense vibration (special anti-corrosion versions available for polluted environments).

Product Parameters

 

Product Name	Dropout Fuse
Product Model	GCD3-27/630
Rated Voltage	24-27KV
Rated Current	630A
Rated Peak Withstand Current	20KA
Impulse Withstand Voltage	125KV
Power-frequency Withstand Voltage	65KV
Isolator Switch Standard	IEC 62271

Detailed Photos

Packaging & Shipping

To ensure the safe delivery of your Isolation Switch, we use high-quality wooden crates for packaging. Each unit is securely packed to prevent damage during transit and handling.

Company Profile

 

Chongqing Zexing Electric Equipment is a leading manufacturer and exporter specializing in a wide range of high-quality electrical eq

uipment. With a strong presence in the global market, we provide advanced solutions for power transmission, distribution, and management. Our product portfolio includes transformers, electric equipment, and other related electrical components, all designed to meet international standards of quality, safety, and efficiency.

Our company is committed to delivering reliable, energy-efficient, and cost-effective solutions that cater to diverse industries, including power generation, construction, and infrastructure development. Backed by a team of experienced engineers and technicians, we pride ourselves on our ability to provide customized products tailored to specific customer needs, ensuring superior performance and longevity.

Chongqing Zexing Electric Power Equipment operates a modern and well-equipped manufacturing facility, which spans a large area. The factory is designed to meet industry demands for high-quality electric power equipment, featuring advanced production lines and rigorous testing systems. With a focus on innovation and efficiency, the factory is equipped with state-of-the-art machinery and skilled workers to ensure the production of reliable and durable products. Zexing Electric Power Equipment's manufacturing process adheres to strict international standards, enabling the company to supply its customers with top-tier products and services.
 

 

Chongqing Zexing Electric Power Equipment  is committed to providing high-quality electrical equipment with certifications that meet international standards. The company holds various certificates, including ISO 9001 for quality management, ISO 14001 for environmental management, and CE certification for product safety and compliance. These certifications validate the company's dedication to maintaining strict quality control, environmental sustainability, and meeting the highest safety standards, ensuring the reliability and efficiency of its products.

Manufactured in compliance with IEC 60947-3 standards, our DC isolation switches ensure high safety and durability. Compact design, easy installation, and excellent electrical performance make them a reliable choice for both residential and commercial projects.OEM and customized specifications are available upon request. Contact us for more details and product catalogs.

 

FAQ

What is an outdoor dropout fuse used for?
An outdoor dropout fuse is used to protect transformers, distribution lines, and electrical equipment in outdoor power systems-primarily for overload/short-circuit protection, and to provide a visible isolated break for safe maintenance, emergency shutdowns, or system reconfiguration in utility, industrial, or new energy distribution networks.
What current and voltage ratings are available for outdoor dropout fuses?
Our outdoor dropout fuses are available in various ratings: common current ratings range from 100A to 400A, and voltage ratings typically cover 15kV, 35kV (40.5kV), up to 72.5kV, suitable for different medium-voltage distribution scenarios.
How is the outdoor dropout fuse mounted for outdoor installation?
The outdoor dropout fuse is pole-mounted, using clamp-type fixtures (e.g., pole brackets, bolts) that attach directly to distribution poles. It comes with matching mounting accessories (hoops, fasteners) and clear installation guidelines for secure, stable outdoor deployment.
What standards do your products comply with?
Our outdoor dropout fuses comply with IEC 60282-1 (standards for high-voltage fuses) and IEC 62271-102 (for isolating switch-related safety), undergoing strict testing to ensure high safety, insulation performance, and operational reliability.
What packaging and shipping methods do you offer?
Each outdoor dropout fuse is packed in robust, export-grade cardboard boxes (or wooden crates for bulk orders) to prevent damage during transit. We offer international shipping (sea/air freight) with full logistics tracking information for timely delivery.
Can you provide OEM or customized solutions for specific projects?
Yes, we offer OEM services and customized solutions tailored to your project needs-including adapting voltage/current ratings, insulation material specifications, mounting structures, and anti-corrosion designs for special environments (e.g., high-altitude, coastal areas).