The Core Advantages Of Drop-out Fuses
Quick response and precise protection
Drop-out fuses use step-by-step exhaust arc extinguishing technology to cut off fault currents in milliseconds, effectively preventing equipment damage and grid accidents from spreading. Its ampere-second characteristic curve is precisely graded to ensure that only the fault area is isolated in the event of overload or short circuit, minimizing the scope of power outages. For example, the rated breaking current of the RW11 fuse can reach 16kA, and it is suitable for voltage levels from 10kV to 35kV, covering a variety of complex scenario requirements.
Extreme environmental adaptability
The product uses high-strength insulating porcelain and anti-corrosion metal components, with a temperature tolerance range of -45°C to +45°C, and supports stable operation in high-altitude areas above 2,000 meters and Class IV dirty environments (creepage distance ≥ 31mm/kV), especially suitable for harsh climatic conditions such as coastal areas, deserts, and high cold.
Modular design, convenient operation and maintenance
The fuse tube supports quick installation and disassembly of the insulated operating rod, and the fuse can be replaced without professional tools. The RW3 and RW11 fuses have a universal design, which significantly reduces the spare parts inventory cost. Some new models are also equipped with a lead fixing structure, which is reinforced by a threaded sleeve and a push plate to avoid poor contact caused by looseness.
Economical and Compatible
The rated current range covers 5A to 200A, which is suitable for transformers, capacitor banks, overhead lines and other scenarios. Compared with traditional circuit breakers, the cost of drop-out fuses is reduced by more than 30%, and the maintenance cycle is extended by 50%, with significant long-term economic benefits.
Why choose drop-out fuses?
Ensure power supply continuity: Support live replacement technology, achieve "zero power outage" maintenance through bypass insulated drain wires, and improve grid reliability.
Green and safe: No harmful gas emissions, in line with international standards such as ANSI,IEC and GB15166.3, and support carbon neutrality goals.
Flexible adaptation: Compatible with smart grid upgrade requirements, support new energy grid protection and rural power grid transformation
Technical highlights and innovations
Windproof and earthquake-resistant design
For strong wind environments such as wind farms, some models use reinforced structures to withstand wind speeds of 35m/s and pass 300 mechanical stability tests to ensure long-term durability.
Intelligent monitoring expansion
The new generation of fuses integrates status indicators, supports remote monitoring of the opening and closing status of the fuse tube, and assists in the digital operation and maintenance of the power grid.
Application of environmentally friendly materials
The conductive parts are made of phosphor copper silver plating technology, and the springs and bolts are made of stainless steel, which is resistant to aging and has a service life of up to 20 years.
