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MERSEN FUSE H 2409P BCKUP T VDE442-56/31,5 L1000280
Mersen L1000280 Limitor PTD DIN high voltage back-up fuse-link for transformer protection, rated 24 kV AC and 31.5 A with a 65 kA breaking capacity and 80 N thermal striker.
£82.73
Why Choose the Mersen L1000280 High Voltage Transformer Fuse?
The Mersen L1000280 is a high performance Limitor®-PTD DIN high voltage back-up fuse-link designed to protect medium voltage transformers against the thermal and dynamic effects of short-circuit currents. Manufactured for use with air-insulated and gas-insulated switchgear, it provides dependable protection in utility, industrial and infrastructure power distribution systems.
Part of Mersen's Limitor®-PTD range with controlled power dissipation, the L1000280 is manufactured using pure silver fuse elements, silver-coated copper end caps and a robust ceramic body. These carefully selected materials provide consistent electrical performance, high interruption capability and reliable operation in demanding medium voltage environments.
With a rated voltage of 24 kV AC, a rated current of 31.5 A and a compact 56 mm diameter × 442 mm length, the L1000280 is suitable for primary-side transformer protection. Its integrated 80 N thermal striker supports operation with compatible switchgear mechanisms and helps provide effective fault indication and isolation.
Key Advantages
- High voltage DIN back-up fuse-link designed for transformer protection.
- 24 kV AC rated voltage for medium voltage distribution systems.
- 31.5 A rated current.
- Controlled power dissipation supports dependable thermal performance.
- 65 kA breaking capacity for interruption of high prospective fault currents.
- Integrated 80 N thermal striker for compatible switchgear mechanisms.
- Manufactured in accordance with IEC 60282-1 and VDE 0670 T402.
- Suitable for air-insulated and gas-insulated medium voltage switchgear.
Key Features
- Mersen Limitor®-PTD back-up fuse series.
- 24 kV AC IEC rated voltage.
- 31.5 A ampere rating.
- 56 mm diameter fuse body.
- 442 mm fuse-link length.
- 65 kA maximum AC breaking capacity.
- 7 kA²s total clearing I²t at rated voltage.
- Integrated 80 N thermal striker.
- Pure silver fuse elements and silver-coated copper end caps.
- Durable ceramic fuse body for medium voltage applications.
Reliable Protection for Medium Voltage Transformers
High voltage back-up fuses such as the Mersen L1000280 are installed on the primary side of distribution transformers to interrupt high short-circuit currents. By rapidly limiting and clearing severe faults, the fuse helps protect transformers, switchgear and associated electrical equipment from damaging thermal and mechanical stresses.
The Limitor®-PTD design combines controlled power dissipation with a high breaking capacity and thermal striker mechanism. This makes the L1000280 suitable for coordinated protection schemes within modern medium voltage substations and industrial power distribution networks.
Typical Applications
- Primary-side protection of medium voltage transformers.
- Air-insulated medium voltage switchgear.
- Gas-insulated switchgear installations.
- Electrical distribution substations.
- Industrial power distribution systems.
- Utility transformer installations.
- Renewable energy and infrastructure projects.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 31.5 A | |
| Voltage | 24000 V | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTD | |
| Model | L1000280 | |
| Catalogue number | 45DB240V32PTD | |
| Product type | High voltage DIN back-up fuse-link | |
| Application | Primary-side transformer protection | |
| Rated voltage | 24 kV AC | |
| Rated current | 31.5 A | |
| Maximum AC breaking capacity | 65 kA | |
| Total clearing I²t at rated voltage | 7 kA²s | |
| Voltage type | AC | |
| Fuse diameter | 56 mm | |
| Fuse length | 442 mm | |
| Striker type | Thermal striker | |
| Striker force | 80 N | |
| Mounting method | Clip mounting | |
| Fuse element material | Pure silver | |
| End cap material | Silver-coated copper | |
| Body material | Ceramic | |
| Standards | IEC 60282-1 and VDE 0670 T402 | |
| EAN / UPC | 3605340455984 | |
| RoHS compliant | Yes | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen L1000280 used for?
The Mersen L1000280 is a DIN high voltage back-up fuse-link used to protect medium voltage transformers against high short-circuit currents.
What voltage and current is the L1000280 rated for?
The fuse is rated for 24 kV AC and has a rated current of 31.5 A.
What is the breaking capacity of the Mersen L1000280?
The L1000280 has a maximum AC breaking capacity of 65 kA, enabling it to interrupt high prospective short-circuit currents.
Does the L1000280 include a striker?
Yes. The fuse incorporates an 80 N thermal striker for fault indication and operation with compatible switchgear mechanisms.
What are the dimensions of the L1000280 fuse?
The fuse has a nominal diameter of 56 mm and a fuse-link length of 442 mm.
Which standards does the Mersen L1000280 meet?
The fuse is designed in accordance with IEC 60282-1 and VDE 0670 T402 requirements for high voltage back-up fuse-links.
Trusted by Utilities and Electrical Engineers Worldwide
Mersen Limitor®-PTD high voltage fuse-links are used in medium voltage power systems to provide reliable transformer protection, controlled power dissipation and dependable interruption of damaging short-circuit currents.
