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FSC-21-2 Drop Out Fuse Cutout
Product Overview
Product Overview
The FSC-21-2 Drop Out Fuse Cutout is an overcurrent protection device engineered for 27~33kV overhead distribution networks. It safeguards critical assets including transformers, capacitors, cables, and distribution lines by interrupting short-circuit and overload currents. Upon fault detection, the fuse link melts and the fuse tube drops open, creating a visible isolation gap for safe line sectionalizing. Built with fiberglass fuse tubes, corrosion-resistant conductive parts, and selectable porcelain or polymer insulators, the FSC-21-2 fully complies with IEC60282-2 and is suited for outdoor applications up to 1000 meters altitude.
Fuse Cutout Structure
Fuse Cutout Structure
The fuse cutout features a main bearing structure for stable support and alignment, along with a secondary bearing structure for added load capacity and secure contact during operation.

Fuse Cutout Accessories
Fuse Cutout Accessories
The FSC-21-2 drop out fuse cutout is supplied with a complete set of essential accessories to ensure reliable operation and ease of maintenance. These include:
● Lower General Bearing of Fuse: Provides stable support and facilitates smooth fuse tube dropping action during fault interruption.
● Arc Extinguishing Housing: Effectively quenches the arc generated when the fuse operates, enhancing safety and protecting surrounding equipment.
● American Type Fusible Load with Knife: Allows convenient load-breaking operation and reliable overcurrent protection, compatible with standard fuse coordination schemes.
● 300A Fusible Load: Designed for high-current applications, ensuring dependable interruption performance under rated load conditions.
These accessories work together to deliver consistent protection, safe operation, and extended service life in medium-voltage distribution systems.

Technical parameter
Technical parameter
| Electrical characteristics | Specification | Unit |
| Voltage | 27~33 | 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: | 660 | 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 |
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