EC Insulator Jiangxi Co., Ltd. is one of the most reliable manufacturers and suppliers of overhead line fuse cutout in China. With abundant experience, we are committed to offering high quality custom service. Please feel free to wholesale premium overhead line fuse cutout made in China here from our factory.
Product Introduction
Many overseas power contractors choose our overhead line fuse cutout for outdoor distribution network protection. This overhead line fuse cutout safeguards overhead distribution circuits during overload or short-circuit faults, which pose major risks to grid operation. This overhead line fuse cutout uses a simple drop-out tripping design built for 10kV class distribution lines, with creepage distance adjusted to match local pollution requirements. It holds up well year-round under harsh outdoor conditions, including strong sunlight, heavy rain, high humidity and corrosive industrial airborne particles. When a fault occurs, the unit trips and creates a clear visual indicator, letting field crews quickly locate the faulty section along long overhead lines and reduce extended power outages for end users. All finished units pass official type tests, and we can provide full type test reports for tender reviews and project approval.
Device Operation
When fault current flows through overhead wiring, heat builds quickly and melts the internal fuse link within milliseconds. Once the fuse element breaks, gravity drops the fuse tube down to create a visible signal. Field technicians can spot the faulted unit without extra test gear, which simplifies routine line maintenance a lot. This straightforward design works reliably in remote mountain and rural service areas, where transporting crews and equipment for inspections often takes considerable time and effort.
Material & Physical Features
We supply both porcelain and polymer insulator versions with clear defined model specifications. Our porcelain RW27/100(200)-8 runs at rated voltage 27kV, rated continuous current 100A or 200A, breaking current 8kA, BIL 125kV, minimum creepage distance 325mm and power frequency voltage 45kV. The polymer HRW27/100(200)-10 reaches rated voltage 27kV, rated continuous current 100A or 200A, breaking current 10kA, BIL 150kV, minimum creepage distance 580mm and power frequency voltage 45kV. The insulator material is dense, finished with a smooth glaze to slow weathering and cracking over decades of outdoor service. Optimized metal fittings secure all internal parts and maintain stable mechanical performance across wide temperature ranges. Internal arc suppression parts quickly extinguish arcs on tripping to prevent further damage to the power line. The unit is light enough for field workers to safely install and replace while working at height.
Custom Options & OEM Service
We support custom requests for global project buyers. We can print your logo on the insulator and adjust export packaging to fit your shipping needs. Our engineering team modifies product structure and dimensions to meet local grid codes and regional pollution levels. We can tailor creepage distance and overall size to match site installation conditions. If your project has special technical requirements, we can design and manufacture accordingly to fit your grid system.
Quality Control & Production
We manufacture all units inside our enclosed factory workshops. Raw materials go through inspection before machining and forming. After assembly, every product gets checked for appearance, fit and function. All batches complete electrical and mechanical testing following IEC standards before shipment. We can supply factory inspection documents and type test reports for tender filing and local registration. Clients are welcome to schedule factory visits and watch factory acceptance tests.
Application Scenarios
This overhead protection device fits many outdoor distribution environments. It is widely used for urban distribution networks, rural power feeders, industrial park power supplies and supporting circuits for renewable energy booster stations. It performs steadily in humid mountain areas, coastal salt fog zones and heavily industrialized regions. Our products have been shipped to power projects across Southeast Asia, South America and North America, including several sites in Mexico. Feedback collected from these field deployments helps us keep refining our product design.
FAQ
For bidding projects, we can share type test reports and factory inspection certificates upon request. These documents meet most international utility tender and registration requirements. We can prepare product samples for your performance evaluation before bulk orders. You only need to cover the actual courier cost for sample delivery. Our standard warranty runs for 24 months starting from shipment date, covering manufacturing defects. Damage from improper installation or extreme operating conditions is not covered under warranty. We stock matching fuse links as spare parts. We can ship these spare accessories separately or pack them together with the main units, as you prefer.
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