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MERSEN FUSE H 2409P BCKUP T VDE442-56/6,3 F1000275
Mersen F1000275 Limitor-PTD high-voltage DIN back-up fuse with controlled power dissipation, rated at 24 kV AC and 6.3 A with an integrated 80 N thermal striker.
£67.75
Why Choose the Mersen F1000275 High-Voltage Back-Up Fuse?
The Mersen F1000275, catalogue reference 45DB240V6,3PTD, is a high-voltage DIN back-up fuse-link developed for protecting distribution transformers against the thermal and dynamic effects of short-circuit currents. Part of the Mersen Limitor®-PTD series, it combines controlled power dissipation with an integrated thermal striker, making it ideal for modern air-insulated and gas-insulated medium-voltage switchgear.
Rated at 24 kV AC with a 6.3 A current rating, the F1000275 is engineered to provide dependable transformer protection while minimising heat generation inside enclosed switchgear. Manufactured using a ceramic insulating body, pure silver fuse elements and silver-plated copper terminals, it delivers excellent electrical performance and long service life.
The fuse incorporates an integrated 80 N thermal striker that provides clear operation indication and can activate compatible switchgear mechanisms. Its low power dissipation characteristics make it particularly suitable for compact switchgear installations where thermal management is critical.
Key Advantages
- High-voltage DIN back-up fuse for transformer protection.
- 24 kV AC rated voltage.
- 6.3 A rated current.
- Controlled power dissipation reduces switchgear heating.
- 63 kA breaking capacity for reliable fault interruption.
- Integrated 80 N thermal striker.
- Ceramic construction with silver fuse elements.
- Recommended for use with compatible air-insulated and gas-insulated switchgear.
Key Features
- Mersen Limitor®-PTD series.
- Manufacturer item number F1000275.
- Catalogue number 45DB240V6,3PTD.
- 24 kV AC IEC rated voltage.
- 6.3 A rated current.
- 63 kA maximum breaking capacity.
- 23 A minimum breaking current.
- Total clearing I²t of 0.8 kA²s.
- Power dissipation of approximately 31 W.
- Integrated thermal striker with 80 N operating force.
- DIN clip-mounted construction.
- Controlled power dissipation technology.
Reliable Protection for Medium-Voltage Transformers
The Mersen F1000275 rapidly interrupts high short-circuit currents before they can damage transformers and associated switchgear. Its controlled power dissipation technology reduces the heat generated during normal operation while maintaining excellent current-limiting performance during fault conditions.
As a back-up fuse-link, the F1000275 should be coordinated with suitable overload protection and selected according to transformer rating, prospective fault current and switchgear design to ensure optimum protection and reliability.
Typical Applications
- Distribution transformer protection.
- Medium-voltage substations.
- Air-insulated switchgear.
- Gas-insulated switchgear.
- Industrial electrical distribution.
- Utility power networks.
- Renewable energy transformer installations.
- Commercial medium-voltage switchgear.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 6.3 A | |
| Voltage | 24000 V | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTD | |
| Item number | F1000275 | |
| Catalogue number | 45DB240V6,3PTD | |
| Product type | High-voltage DIN back-up fuse-link | |
| Application | Distribution transformer protection | |
| Rated voltage | 24 kV AC | |
| Rated current | 6.3 A | |
| Maximum breaking capacity | 63 kA | |
| Minimum breaking current | 23 A | |
| Total clearing I²t | 0.8 kA²s | |
| Power dissipation | 31 W | |
| Current type | AC | |
| Operating class | Back-up fuse | |
| Design | VDE T402 | |
| Striker force | 80 N | |
| Indication system | Thermal striker | |
| Mounting | Clip mounting | |
| Fuse diameter | 56 mm | |
| DIN contact length | 442 mm | |
| Overall product length | 508 mm | |
| Body material | Ceramic | |
| Terminal material | Silver-plated copper | |
| Terminal type | Cylindrical | |
| Product weight | 2.4 kg | |
| EAN / UPC | 3605340456400 | |
| Standards | IEC 60282-1, VDE T402 | |
| RoHS compliant | Yes | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen F1000275 used for?
The Mersen F1000275 is a high-voltage DIN back-up fuse-link designed to protect medium-voltage distribution transformers against damaging short-circuit currents.
What are the voltage and current ratings?
The fuse is rated at 24 kV AC with a nominal current rating of 6.3 A.
What does controlled power dissipation provide?
Controlled power dissipation reduces heat generated by the fuse during normal operation, making it particularly suitable for compact enclosed medium-voltage switchgear.
Does the F1000275 include a striker?
Yes. It incorporates an integrated 80 N thermal striker for indication and operation of compatible switchgear mechanisms.
What is the breaking capacity of the Mersen F1000275?
The fuse has a maximum AC breaking capacity of 63 kA with a minimum breaking current of 23 A.
Trusted High-Voltage Transformer Protection
Mersen Limitor®-PTD fuse-links are trusted by utilities, switchgear manufacturers and electrical engineers worldwide for dependable transformer protection, controlled power dissipation and reliable medium-voltage fault interruption.
