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MERSEN FUSE H 2409P BCKUP VDE442-56/31,5 L1000257
Mersen L1000257 Limitor PD DIN high voltage back-up fuse-link for transformer protection, rated 24 kV AC and 31.5 A with integrated 80 N striker.
£78.74
Why Choose the Mersen L1000257 High Voltage Transformer Fuse?
The Mersen L1000257 is a premium Limitor®-PD DIN high voltage back-up fuse-link developed to provide dependable short-circuit protection for medium voltage transformers. Manufactured in accordance with IEC 60282-1 and VDE 0670 T402, this fuse is designed for electrical distribution networks where reliability and equipment protection are essential.
Part of Mersen's trusted Limitor®-PD range, the L1000257 is manufactured using pure silver fuse elements, silver-coated copper end caps and a durable ceramic body. The integrated 80 N striker enables reliable operation with compatible switchgear, while the low power dissipation design helps maintain dependable performance throughout the product's service life.
With a 24 kV AC rated voltage, 31.5 A current rating and 56 mm diameter × 442 mm length, the L1000257 is ideal for protecting distribution transformers and medium voltage electrical equipment against damaging fault currents.
Key Advantages
- DIN high voltage back-up fuse-link for transformer protection.
- 24 kV AC IEC rated voltage.
- 31.5 A current rating.
- Designed to IEC 60282-1 and VDE 0670 T402.
- Integrated 80 N striker for dependable switchgear operation.
- Low power dissipation design for reliable long-term performance.
- Pure silver fuse elements for consistent electrical characteristics.
- Suitable for medium voltage switchgear and transformer installations.
Key Features
- Manufacturer: Mersen.
- Series: Limitor®-PD Back-up Fuses.
- Catalogue number: 45DB240V32PD.
- Rated voltage: 24 kV AC.
- Rated current: 31.5 A.
- Fuse dimensions: Ø56 mm × 442 mm.
- Breaking capacity: 63 kA.
- Minimum breaking current: 125 A.
- Integrated 80 N striker.
- Ceramic body with silver fuse elements.
Reliable Protection for Medium Voltage Transformers
The Mersen Limitor®-PD range is engineered specifically to protect medium voltage transformers against high prospective fault currents. The L1000257 rapidly interrupts short-circuit faults, helping minimise equipment damage while supporting the continued reliability of electrical distribution systems.
Its precision-manufactured silver fuse elements, ceramic construction and integrated striker provide dependable operation within substations, industrial switchgear and utility distribution networks.
Typical Applications
- Medium voltage distribution transformers.
- Utility substations.
- Industrial electrical distribution.
- Medium voltage switchgear.
- Renewable energy infrastructure.
- Power generation facilities.
- Commercial and industrial electrical installations.
Technical Specifications
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| Device Type | Fuse link | |
|---|---|---|
| Fuse Type | High voltage | |
| Current | 31.5 A | |
| Voltage | 24000 V | |
| Manufacturer | Mersen | |
| Series | Limitor®-PD Back-up Fuses | |
| Model | L1000257 | |
| Catalogue number | 45DB240V32PD | |
| Product type | High voltage DIN back-up fuse-link | |
| Application | Transformer protection | |
| Rated voltage | 24 kV AC | |
| Rated current | 31.5 A | |
| Breaking capacity | 63 kA | |
| Minimum breaking current | 125 A | |
| Fuse diameter | 56 mm | |
| Fuse length | 442 mm | |
| Striker | 80 N | |
| Body material | Ceramic | |
| Fuse element | Pure silver | |
| End caps | Silver-coated copper | |
| Standards | IEC 60282-1, VDE 0670 T402 | |
| Mounting | DIN high voltage fuse mounting | |
| EAN | 3605340456431 | |
| RoHS compliant | Yes | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen L1000257 used for?
The L1000257 is a DIN high voltage back-up fuse designed to protect medium voltage transformers against damaging short-circuit currents.
What voltage is the L1000257 rated for?
This fuse has a rated operating voltage of 24 kV AC.
What is the rated current?
The Mersen L1000257 has a continuous current rating of 31.5 A.
Does this fuse include a striker?
Yes. It incorporates an integrated 80 N striker for operation with compatible medium voltage switchgear.
Which standards does this fuse comply with?
The fuse is manufactured in accordance with IEC 60282-1 and VDE 0670 T402 for medium voltage transformer protection.
Trusted by Utilities and Industry Worldwide
Mersen Limitor®-PD high voltage fuse-links are widely used by utilities, switchgear manufacturers and industrial engineers to provide dependable transformer protection and reliable medium voltage network performance.
