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MERSEN FUSE H 3609P BCKUP T VDE537-56/25 45DB360V25PTD
Mersen X1000290 Limitor-PTD DIN high voltage back-up fuse-link rated at 36 kV AC and 25 A, with a 20 kA breaking capacity and 80 N thermal striker for transformer protection.
£88.78
Why Choose the Mersen X1000290 Limitor®-PTD High Voltage Back-up Fuse?
The Mersen X1000290 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 in accordance with IEC 60282-1 and VDE 0670 T402, it provides dependable fault interruption for high voltage switchgear and transformer protection systems.
As part of the advanced Mersen Limitor®-PTD range, the X1000290 incorporates controlled power dissipation and an integrated thermal striker. These features support reliable transformer protection while helping manage thermal conditions within compatible air insulated and gas insulated switchgear.
Rated at 36 kV AC with a 25 A current rating, the X1000290 has a 56 mm diameter × 537 mm fuse size and a maximum breaking capacity of 20 kA. Its pure silver fuse elements, silver-plated copper terminals and ceramic body provide consistent electrical performance and long service life.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- Controlled power dissipation supports operation within enclosed switchgear.
- 36 kV AC voltage rating for high voltage distribution systems.
- 25 A rated current for transformer primary protection.
- 20 kA breaking capacity for dependable fault interruption.
- Integrated 80 N thermal striker for compatible switchgear operation.
Key Features
- Mersen Limitor®-PTD back-up fuse-link.
- Catalogue number: 45DB360V25PTD.
- Rated voltage: 36 kV AC.
- Rated current: 25 A.
- Breaking capacity: 20 kA.
- Fuse size: 56 mm diameter × 537 mm length.
- 80 N thermal striker indication system.
- Clip-mounted DIN high voltage fuse construction.
Reliable Protection for Medium Voltage Transformers
High voltage back-up fuse-links interrupt significant short-circuit currents before transformers and associated switchgear are exposed to damaging thermal and mechanical stresses. This helps improve installation safety, reduce equipment damage and minimise costly electrical downtime.
The Mersen Limitor®-PTD range combines controlled power dissipation with an integrated thermal striker, making it suitable for modern air insulated and gas insulated switchgear. The X1000290 provides dependable transformer protection for new electrical installations and maintenance replacement projects.
Typical Applications
- Medium voltage transformer primary protection.
- Gas insulated switchgear.
- Air insulated switchgear.
- Industrial substations and distribution networks.
- Utility power distribution systems.
- Commercial and industrial electrical infrastructure.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Voltage | 360 V | |
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 25 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTD | |
| Model | X1000290 | |
| Catalogue number | 45DB360V25PTD | |
| Product type | High voltage DIN back-up fuse-link | |
| Application | Transformer protection | |
| Rated voltage | 36 kV AC | |
| Rated current | 25 A | |
| Current type | AC | |
| Breaking capacity | 20 kA | |
| Minimum interrupting rating | 110 A | |
| Clearing I²t at rated voltage | 6.5 kA²s | |
| Fuse size | Ø56 × 537 mm | |
| Overall product length | Approx. 603 mm | |
| Mounting type | Clip mounting | |
| Indication system | Thermal striker | |
| Striker force | 80 N | |
| Terminal material | Silver-plated copper | |
| Terminal type | Cylindrical | |
| Body material | Ceramic | |
| Fuse element material | Pure silver | |
| Power dissipation at rated current | 100 W | |
| Design | VDE T402 | |
| Applicable standards | IEC 60282-1, VDE 0670 T402 | |
| RoHS compliant | Yes | |
| Product weight | Approx. 2.7 kg | |
| EAN / UPC | 3605340456615 | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen X1000290 used for?
The X1000290 is a high voltage DIN back-up fuse-link designed to protect medium voltage transformers against the thermal and dynamic effects of short-circuit currents.
What voltage is the Mersen X1000290 rated for?
The fuse-link has a rated voltage of 36 kV AC.
What is the current rating of this fuse?
The Mersen X1000290 has a rated current of 25 A.
What is the breaking capacity of the X1000290?
The fuse has a maximum AC breaking capacity of 20 kA.
Does the X1000290 include a thermal striker?
Yes. It includes an integrated 80 N thermal striker for indication and operation with compatible switchgear mechanisms.
Trusted by Electrical Engineers Worldwide
Mersen Limitor®-PTD high voltage fuse-links are widely used by utilities, transformer manufacturers, switchgear builders and industrial engineers for dependable transformer protection and controlled thermal performance in medium voltage electrical systems.
