Mersen S078814 FR20GB10C12P high-speed cylindrical fuse rated at 12 A and 1000 V AC, with gLB utilisation category and an integrated striker for semiconductor protection.
£40.94
The Mersen S078814, also identified as FR20GB10C12P and 20GB10V12P, is a high-performance high-speed cylindrical fuse designed to protect sensitive semiconductor devices and industrial power electronic equipment against damaging overcurrent and short-circuit conditions. Its ultra-rapid operating characteristics help limit the fault energy passed into vulnerable electrical components.
Featuring a gLB utilisation category, the S078814 provides dependable protection for circuits containing power semiconductors. Its robust cylindrical construction supports reliable operation in demanding industrial environments, while the integrated striker can be used to indicate when the fuse has operated.
With a rated current of 12 A, a rated voltage of 1000 V AC and a compact 20 × 127 mm body, the Mersen S078814 is suitable for drives, converters, rectifiers, power supplies and other installations requiring rapid and effective semiconductor protection.
High-speed fuses are engineered to interrupt electrical faults more rapidly than conventional industrial fuses. This helps reduce peak current and thermal energy, protecting sensitive components such as diodes, thyristors, rectifiers, power modules and semiconductor switching devices.
The Mersen S078814 combines rapid fault interruption with a high operating voltage and compact cylindrical format. It provides an effective protection solution for industrial systems where low let-through energy, reliable operation and clear fuse status indication are important.
| Manufacturer | Mersen |
|---|---|
| Brand range | Mersen Ferraz Shawmut |
| Model | S078814 |
| Product reference | FR20GB10C12P |
| Alternative part number | 20GB10V12P |
| Product designation | 1051 CP GLB 20.127 12 |
| Product type | High-speed cylindrical fuse |
| Rated current | 12 A |
| Rated voltage | 1000 V AC |
| Utilisation category | gLB |
| Fuse dimensions | 20 × 127 mm |
| Body style | Cylindrical |
| Indication system | Integrated striker |
| Mounting type | Compatible cylindrical fuse holder |
| Protection function | Semiconductor overcurrent and short-circuit protection |
| GTIN | 3605340031812 |
The Mersen S078814 is used to protect semiconductor devices and industrial power electronic equipment against overcurrent and short-circuit faults.
The fuse has a rated current of 12 A.
The Mersen S078814 is rated for operation at up to 1000 V AC.
The fuse has a cylindrical body measuring 20 × 127 mm.
Yes. The fuse incorporates an integrated striker that can provide an indication after the fuse has operated.
Mersen high-speed fuses are widely specified by equipment manufacturers, panel builders and maintenance engineers for dependable protection of semiconductors and critical industrial power electronic systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...