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MERSEN FUSE H 2409P BCKUP T VDE442-56/40 M1000281
Mersen M1000281 Limitor PTD DIN high voltage back-up fuse-link for transformer protection, rated 24 kV AC and 40 A with Controlled Power Dissipation and an 80 N thermal striker.
£88.93
Why Choose the Mersen M1000281 High Voltage Transformer Fuse?
The Mersen M1000281 is a premium Limitor®-PTD DIN high voltage back-up fuse-link developed to provide dependable short-circuit protection for medium voltage transformers. Designed in accordance with IEC 60282-1 and VDE 0670 T402, it incorporates Controlled Power Dissipation (CPD) technology, making it ideal for use in modern air-insulated and gas-insulated switchgear.
Manufactured using pure silver fuse elements, silver-coated copper end caps and a durable ceramic body, the M1000281 delivers excellent electrical performance and long service life. The integrated 80 N thermal striker enables reliable operation with compatible switchgear, whilst the CPD design helps reduce operating temperatures inside enclosed equipment.
With a rated voltage of 24 kV AC, a rated current of 40 A and dimensions of 56 mm diameter × 442 mm length, the M1000281 is ideally suited to protecting distribution transformers from damaging short-circuit currents whilst maintaining reliable medium voltage network operation.
Key Advantages
- High voltage DIN back-up fuse-link for transformer protection.
- 24 kV AC rated voltage.
- 40 A rated current.
- Controlled Power Dissipation (CPD) technology reduces thermal loading.
- 63 kA maximum breaking capacity.
- Integrated 80 N thermal striker.
- Designed for air-insulated and gas-insulated switchgear.
- Manufactured in accordance with IEC 60282-1 and VDE 0670 T402.
Key Features
- Mersen Limitor®-PTD back-up fuse series.
- Catalogue number: 45DB240V40PTD.
- 24 kV AC rated voltage.
- 40 A current rating.
- 56 mm diameter × 442 mm length.
- 63 kA maximum AC breaking capacity.
- 14.2 kA²s total clearing I²t.
- 161 A minimum breaking current.
- 80 N thermal striker.
- Controlled Power Dissipation (CPD) construction.
Reliable Protection for Medium Voltage Transformers
The Mersen M1000281 is engineered to interrupt high prospective short-circuit currents before they can damage transformers and associated medium voltage equipment. Its current-limiting characteristics help minimise thermal and mechanical stress, improving system reliability whilst reducing maintenance requirements.
Controlled Power Dissipation technology helps reduce heat generation within enclosed switchgear whilst maintaining dependable fault interruption performance. The M1000281 is recommended for use in modern transformer protection schemes and is approved for use with many leading switchgear manufacturers.
Typical Applications
- Medium voltage transformer protection.
- Air-insulated switchgear.
- Gas-insulated switchgear.
- Utility substations.
- Industrial power distribution systems.
- Renewable energy installations.
- OEM medium voltage equipment.
Technical Specifications
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| Device Type | Fuse link | |
|---|---|---|
| Fuse Type | High voltage | |
| Current | 40 A | |
| Voltage | 24000 V | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTD Back-up Fuses | |
| Model | M1000281 | |
| Catalogue number | 45DB240V40PTD | |
| Product type | High voltage DIN back-up fuse-link | |
| Application | Transformer protection | |
| Rated voltage | 24 kV AC | |
| Rated current | 40 A | |
| Breaking capacity | 63 kA | |
| Minimum breaking current | 161 A | |
| Total clearing I²t | 14.2 kA²s | |
| Cold resistance | 41 mΩ (±10%) | |
| Power dissipation | 96 W | |
| Fuse diameter | 56 mm | |
| Fuse length | 442 mm | |
| Mounting | Clip mounting | |
| Thermal striker | 80 N | |
| Body material | Ceramic | |
| Fuse element | Pure silver | |
| End caps | Silver-coated copper | |
| EAN | 3605340456455 | |
| RoHS compliant | Yes | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen M1000281 used for?
The Mersen M1000281 is a DIN high voltage back-up fuse-link designed to protect medium voltage transformers against damaging short-circuit currents.
What voltage is the M1000281 rated for?
The fuse has a rated operating voltage of 24 kV AC.
What current rating does this fuse have?
The Mersen M1000281 has a continuous current rating of 40 A.
Does this fuse include a striker?
Yes. It incorporates an integrated 80 N thermal striker for operation with compatible medium voltage switchgear.
What are the dimensions of the fuse?
The fuse has a nominal diameter of 56 mm and a fuse-link length of 442 mm.
Trusted by Utilities and Electrical Engineers Worldwide
Mersen Limitor®-PTD high voltage fuse-links are trusted worldwide to provide dependable transformer protection with controlled power dissipation and reliable interruption of high fault currents in medium voltage electrical systems.
