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MERSEN FUSE H 3609P BCKUP T VDE537-56/20 45DB360V20PTD
Mersen W1000289 Limitor-PTD high voltage DIN back-up fuse-link with controlled power dissipation, rated at 36 kV AC and 20 A for transformer protection in medium voltage electrical distribution systems.
£82.86
Why Choose the Mersen W1000289 Limitor®-PTD High Voltage Back-up Fuse?
The Mersen W1000289 is a premium Limitor®-PTD high voltage DIN back-up fuse-link with controlled power dissipation, engineered to provide dependable protection for medium voltage transformers operating in industrial and utility electrical networks. Manufactured in accordance with IEC 60282-1 and VDE 0670 T402, it delivers rapid interruption of fault currents while helping to minimise thermal stress within modern switchgear assemblies.
As part of the trusted Mersen Limitor®-PTD range, the W1000289 features pure silver fuse elements, silver-plated copper end caps and a robust ceramic body for excellent electrical performance and long service life. The integrated 80 N thermal striker enables reliable operation with compatible air insulated and gas insulated switchgear.
Rated for 36 kV AC with a 20 A current rating, this fuse is supplied in a 56 mm × 537 mm DIN format, making it ideal for protecting medium voltage transformers used in substations, renewable energy installations and industrial power distribution systems.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- Controlled power dissipation technology reduces thermal loading.
- 36 kV AC rated voltage for high voltage distribution systems.
- 20 A current rating suitable for transformer protection.
- Integrated 80 N thermal striker for dependable switchgear operation.
- Manufactured to IEC 60282-1 and VDE 0670 T402 standards.
Key Features
- Mersen Limitor®-PTD back-up fuse-link.
- Catalogue number: 45DB360V20PTD.
- Rated voltage: 36 kV AC.
- Rated current: 20 A.
- Breaking capacity: 31.5 kA.
- Fuse dimensions: 56 mm diameter × 537 mm length.
- 80 N thermal striker mechanism.
- Designed for transformer protection in air and gas insulated switchgear.
Reliable Protection for Medium Voltage Transformers
Medium voltage back-up fuse-links rapidly clear high fault currents before they can damage transformers or associated switchgear. This helps improve system reliability, extend equipment life and reduce maintenance costs across industrial electrical networks.
The Mersen Limitor®-PTD range combines controlled power dissipation with dependable fault interruption, making it an excellent solution for modern transformer installations used throughout utility, industrial and renewable energy applications.
Typical Applications
- Medium voltage transformer protection.
- Utility substations.
- Industrial power distribution.
- Gas insulated switchgear (GIS).
- Air insulated switchgear.
- Renewable energy installations.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Voltage | 360 V | |
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 20 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTD | |
| Model | W1000289 | |
| Catalogue number | 45DB360V20PTD | |
| Product type | High voltage DIN back-up fuse-link | |
| Rated voltage | 36 kV AC | |
| Rated current | 20 A | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 31.5 kA | |
| Minimum breaking current | 100 A | |
| Fuse dimensions | Ø56 × 537 mm | |
| Striker | 80 N thermal striker | |
| Construction | Ceramic body with pure silver fuse elements and silver-plated copper terminals | |
| Standards | IEC 60282-1, VDE 0670 T402 | |
| Weight | Approx. 2.7 kg | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen W1000289 used for?
The W1000289 is a high voltage DIN back-up fuse-link designed to protect medium voltage transformers against damaging short-circuit currents.
What voltage is this fuse rated for?
This fuse is rated for operation on 36 kV AC systems.
What is the current rating?
The Mersen W1000289 has a 20 A rated current.
Does this fuse include a thermal striker?
Yes. It includes an integrated 80 N thermal striker for reliable operation with compatible switchgear.
Which standards does this fuse comply with?
The fuse complies with IEC 60282-1 and VDE 0670 T402 requirements for high voltage back-up fuse-links.
Trusted by Electrical Engineers Worldwide
Mersen Limitor®-PTD high voltage fuse-links are trusted worldwide by utilities, switchgear manufacturers and industrial engineers for dependable transformer protection, controlled thermal performance and reliable fault interruption in demanding medium voltage installations.
