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China FSC-22-3 Drop Out Fuse Cutout - Reliable Overcurrent Protection from Trusted Suppliers & Factory
Product Overview
The FSC-22-3 Drop Out Fuse Cutout is a high-voltage protection device rated for 33~36kV overhead distribution systems. It safeguards transformers, capacitors, cables, and distribution lines by interrupting fault currents during short-circuit and overload events. Upon fuse link melting, the fuse tube drops open to provide a clear visible isolation gap, simplifying fault identification and circuit sectionalizing. Constructed with a durable fiberglass fuse tube, silver or tin-plated copper conductive parts, and selectable porcelain or polymer insulators, this cutout is fully compliant with IEC60282-2 for reliable outdoor service.
Fuse Cutout Structure
The fuse cutout features a main bearing structure that provides stable support and precise alignment of the fuse tube, along with a secondary bearing structure that enhances load capacity and ensures secure electrical contact during operation.
Fuse Cutout Accessories
The fuse cutout is equipped with a lower general bearing for stable fuse tube support, an arc extinguishing housing for safe fault interruption, an American type fusible load with knife for load-breaking and visible isolation, and a 300A fusible load for reliable high-current protection.
Technical Parameter
| Electrical Characteristics | Specification | Unit |
|---|---|---|
| Voltage | 33~36 | KV |
| Current | 100 / 200 / 300 | A |
| Frequency | 50 / 60 | Hz |
| Power frequency withstand voltage to earth (1 min) | 70 | KV |
| Power frequency withstand voltage phase to phase (1 min) | 80 | KV |
| Impulse voltage to earth | 170 | KV |
| Impulse voltage phase to phase | 180 | KV |
| Breaking current | 6 | KA |
| Creepage distance | 720 | 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 rated voltage and current capacity of the FSC-22-3 Fuse Cutout?
The FSC-22-3 is rated for system voltages between 33kV and 36kV, with available current ratings of 100A, 200A, and 300A for 50/60Hz distribution lines.
Q
What standard does this drop out fuse cutout comply with?
The FSC-22-3 cutout is fully engineered and tested in compliance with the international standard IEC60282-2 for outdoor high-voltage current-limiting fuses.
Q
What materials are used for the fuse tube and conductive components?
The fuse tube is made of high-durability fiberglass. The conductive parts are crafted from copper with high-grade silver plating or tin plating, and brass components feature 60%~62% copper content.
Q
What insulator options are available for the FSC-22-3?
The product can be configured with either high-strength Porcelain or lightweight Polymer composite insulators, delivering a creepage distance of 720 mm.
Q
What are the standard ambient service conditions for operation?
It is designed for environments with a maximum ambient temperature of 40℃, pollution level II, and an operational altitude of ≤1000 meters above sea level.
Q
Can the cutout be ordered with optional accessories like mounting brackets?
Yes, optional accessories such as mounting brackets, arc shortening rods, and arc extinguishing chambers can be supplied with or without the main unit according to installation requirements.
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