Wenzhou Huajidian Technology Co. Ltd.
Wenzhou Huajidian Technology Co. Ltd.
Products

Wholesale Electric Drop-out Fuse For Reliable Circuit Protection In Bulk Orders

The Huajidian Electric Drop-out Fuse is an outdoor overcurrent protection device designed for overhead distribution lines operating at 6kV to 33kV. Featuring a high-insulation polymer or porcelain housing and an automatic drop-out fault indication mechanism, the fuse complies with international IEC standards and provides reliable protection for power distribution networks.

As a professional electrical equipment supplier, Huajidian sources its drop-out fuses from a certified manufacturing facility in Yueqing, China. Every product undergoes comprehensive factory acceptance testing (FAT) and is supplied with complete certification documentation and global after-sales support. The product is widely used by utility companies, EPC contractors, and power distribution projects across Southeast Asia, the Middle East, Africa, and North America.

Key Product Specifications

  • Rated Voltage: 10kV / 15kV / 24kV / 33kV (customized options available)
  • Breaking Capacity: 8kA–20kA short-circuit current
  • Insulator Material: UV-resistant polymer insulator (porcelain optional)
  • Standards & Certifications: IEC 60265, CE, IECEx, with support for SABER (Saudi Arabia) and SNI (Indonesia) certification
  • Applications: Overhead distribution lines, pole-mounted transformers, rural power grids, mining distribution systems, agricultural substations, and photovoltaic power networks

Core Product Advantages

Fast Arc Extinguishing for Reliable Fault Protection

The fuse tube utilizes an efficient gas-generated arc extinguishing system that interrupts fault currents within approximately 0.2 seconds. Rapid fault isolation minimizes damage to downstream electrical equipment and improves overall system reliability.

Visible Drop-Out Design for Easy Fault Identification

The automatic gravity-operated drop-out mechanism creates a clearly visible open circuit after fuse operation, allowing maintenance personnel to quickly identify fault locations while improving operational safety during inspection and maintenance.

Designed for Harsh Outdoor Environments

Manufactured with corrosion-resistant metal components and high-performance insulating materials, the fuse operates reliably in temperatures ranging from -30°C to +60°C. Optional silicone-coated polymer insulators provide excellent resistance to pollution, UV exposure, humidity, and coastal salt spray conditions.

Flexible Configuration and OEM Customization

Multiple fuse current ratings are available to match transformers of different capacities. Huajidian also provides customized bracket dimensions, mounting configurations, and OEM manufacturing services to meet specific project requirements.

Strict Three-Stage Quality Control

Every Electric Drop-out Fuse is manufactured under a comprehensive quality management system that includes incoming material inspection (IQC), in-process quality control (IPQC), and full-function Factory Acceptance Testing (FAT) before shipment, ensuring consistent product quality and long-term reliability.

Typical Application Scenarios

Huajidian Electric Drop-out Fuses are widely used for:

  • Rural overhead power distribution networks
  • Pole-mounted distribution transformer protection
  • Mining area overhead feeder protection
  • Agricultural irrigation substations
  • Solar photovoltaic overhead distribution systems
  • Utility and EPC power distribution projects

Frequently Asked Questions

Q1: Can the Huajidian Electric Drop-out Fuse be used in coastal areas with high salt spray?

A: Yes. Polymer insulators with silicone rubber anti-pollution coatings are specifically designed for coastal environments with high humidity and salt spray, while porcelain insulators are available for inland and dry-climate applications. All metal fittings are hot-dip galvanized to provide excellent corrosion resistance and long service life.

Q2: What certification documents are available for Middle East market customs clearance?

A: Huajidian provides complete IEC 60265 type test reports, CE certification, and comprehensive export documentation. The company also supports customers with Saudi SABER registration, Indonesian SNI certification assistance, sample testing, and complete customs clearance documentation before shipment.

Q3: What warranty and spare parts support are provided?

A: Huajidian Electric Drop-out Fuses are backed by a 5-year global warranty. A full range of replacement fuse links is kept in stock, and complimentary spare fuses can be supplied according to order quantity, ensuring fast on-site maintenance and reduced equipment downtime.

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40.5kV Motorized Drop-out Fuse

40.5kV Motorized Drop-out Fuse

Power System 40.5kV、200A

Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670

The HUAJIDIAN 40.5kV Motorized Drop-out Fuse is an intelligent, high-performance protection device adapted for 40.5kV outdoor high-voltage power distribution networks. Breaking through the operational limitations of traditional manual fuses, it features a 12V/24V DC electric operating mechanism, enabling remote control and automatic tripping in case of faults. With a rated voltage of 40.5kV, a rated current of 200A, and a short-circuit breaking current of 16kA, it reliably provides overcurrent and short-circuit protection. Utilizing a rubber insulation structure and optimized mechanical design, the product can operate stably in harsh outdoor environments such as low temperatures and icing conditions.
Load Break Porcelain Motorized Drop-out Fuse

Load Break Porcelain Motorized Drop-out Fuse

Power System 12kV 、100A/200A

Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670

The HUAJIDIAN Load Break Porcelain Motorized Drop-out Fuse is a new generation of distribution protection product upgraded from traditional porcelain drop-out fuses. It abandons the traditional fragile porcelain insulation structure, adopts composite silicone rubber insulators, and optimizes the arc-extinguishing and mechanical structure, offering advantages such as lightweight, corrosion resistance, high and low temperature resistance, and low maintenance costs. As a self-developed product from a leading domestic power equipment manufacturer, this equipment is widely used in the protection of 10kV distribution networks in urban and rural areas of China, rural power grid upgrades, industrial parks, and lines and pole-mounted transformers in high-pollution and high-altitude areas.
Load Break Silicone Motorized Drop-out Fuse

Load Break Silicone Motorized Drop-out Fuse

Power System 12kV、100A

Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670

HUAJIDIAN, a professional manufacturer of power transmission and distribution equipment, focuses on the research and development and production of 12kV Load Break Silicone Motorized Drop-out Fuse. The products strictly adhere to IEC and GB domestic and international standards, are manufactured using precision in its own standardized factory, and employ a high-strength ceramic insulation structure. They offer advantages such as rapid fault breaking, visible tripping, strong weather resistance, and easy maintenance, and are widely used for overload and short-circuit protection of 10kV distribution lines, distribution transformers, capacitor banks, and cable branch boxes.
Porcelain Motorized Drop-out Fuse

Porcelain Motorized Drop-out Fuse

Power System 12kV、100A/200A

Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670

The HUAJIDIAN Porcelain Motorized Drop-out Fuse is a professional overcurrent protection device specifically developed for 10kV overhead distribution lines and pole-mounted distribution transformers. The product integrates a gravity spring drop-out structure, high-strength porcelain insulation, and gas-generating arc-extinguishing technology, enabling rapid response to line overload and short-circuit faults. After the fuse melts, a visible break point is formed, achieving fault isolation and safe maintenance protection. Relying on its own standardized factory mass production system, product quality is stable and reliable. As a professional supplier, HUAJIDIAN can provide standardized products, customized solutions, and one-stop technical services.
HUAJIDIAN TEC is a professional Electric Drop-out Fuse manufacturer and supplier in China. We have an experienced sales team, professional technicians, and an after-sales service team.
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