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China FSC-18-2 Drop Out Fuse Cutout - Reliable Overcurrent Protection from Leading Suppliers and Factory
Product Overview
The FSC-18-2 Drop Out Fuse Cutout is an overcurrent protection device designed for 24~27kV overhead distribution systems. It safeguards transformers, capacitors, cables, and distribution lines against damage caused by short circuits and overload conditions. When a fault occurs, the fuse link melts and the fuse tube drops out, providing a visible isolation break. Constructed with high-quality brass, silver or tin-plated copper conductive parts, and porcelain or polymer insulators, this cutout complies with IEC60282-2 and delivers reliable performance in outdoor environments.
Fuse Cutout Structure
The fuse cutout features a robust main bearing structure designed to withstand mechanical stress and ensure long-term operational stability. It integrates the upper and lower contact assemblies with the main load-bearing framework, providing reliable support for the fuse tube and ensuring proper alignment during operation and dropout action.
Fuse Cutout Accessories
The cutout comes complete with a lower general bearing assembly, an arc extinguishing housing, an American-type knife-blade fusible load, and a 300A fusible load, providing all essential components for installation and reliable operation.
Technical Parameter
| Electrical characteristics | Specification | Unit |
|---|---|---|
| Voltage | 24~27 | KV |
| Current | 100/200/300 | A |
| Frequency | 50/60 | Hz |
| Power frequency withstand voltage to earth (1 min) | 50 | KV |
| Power frequency withstand voltage phase to phase (1 min) | 60 | KV |
| Impulse voltage to earth | 150 | KV |
| Impulse voltage phase to phase | 160 | KV |
| Breaking current | 8 | KA |
| Creepage distance | 520 | mm |
| Spare parts | |
|---|---|
| Mounting bracket | with/without |
| Arc shortening rod | with/without |
| Arc distinguish chamber | with/without |
| Fuse link | without |
| Material | |
|---|---|
| Copper content for brass | Brass (60~62%) |
| Conductive parts material | Copper with silver plated/Copper with tin plate |
| Insulator | Porcelain/Polymer |
| Fuse tube | Fiber glass |
| Service conditions | ||
|---|---|---|
| Environment maximum temperature | 40 | ℃ |
| Pollution level | II | - |
| Altitude | ≤1000 | Meter |
Frequently Asked Questions (FAQ)
Q:What is the primary function of the FSC-18-2 Drop Out Fuse Cutout?
The FSC-18-2 Drop Out Fuse Cutout is designed as an overcurrent protection device for 24~27kV overhead distribution systems. It protects key infrastructure like transformers, capacitors, cables, and distribution lines from damage caused by overloads and short circuits.
Q:How does the dropout mechanism operate during a fault?
When a fault occurs, the high current causes the internal fuse link to melt. This action releases the fuse tube, allowing it to drop out under its own weight and spring tension, creating a clear, visible isolation break for maintenance crews.
Q:What materials are used to ensure the durability of the conductive parts?
The conductive parts are manufactured using high-quality brass and copper with either silver or tin plating. This construction guarantees excellent electrical conductivity and superior corrosion resistance in harsh outdoor environments.
Q:What are the standard service and environmental limits for this cutout?
The device is optimized for outdoor service conditions where the maximum environment temperature does not exceed 40℃, the altitude is at or below 1000 meters, and the pollution level is within class II limits.
Q:Does the FSC-18-2 comply with international safety standards?
Yes, this drop out fuse cutout is designed, manufactured, and tested in full compliance with the IEC60282-2 standard, ensuring internationally recognized safety and reliability.
Q:What optional accessories can be configured with this unit?
The cutout can be configured with or without mounting brackets, arc shortening rods, and arc distinguish chambers depending on the installation requirements. The standard package includes a lower general bearing assembly, an arc extinguishing housing, and fusible loads.
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