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MERSEN FUSE H 1209UP BCKUP T292-56/2 45DB120V2PT
Mersen M1000120 Limitor PT DIN high voltage back-up fuse-link for transformer protection, rated 12 kV AC and 2 A with controlled power dissipation and an 80 N thermal striker.
£61.19
Why Choose the Mersen M1000120 High Voltage Transformer Fuse?
The Mersen M1000120 is a premium Limitor®-PT 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, it forms part of Mersen's proven Limitor®-PT range with Controlled Power Dissipation (CPD), delivering reliable transformer protection in utility, industrial and infrastructure applications.
Constructed using pure silver fuse elements, silver-coated copper end caps and a robust ceramic body, the M1000120 provides excellent electrical performance and long service life. Its integrated 80 N thermal striker enables dependable operation with compatible medium voltage switchgear and protection systems.
With a rated voltage of 12 kV AC, a rated current of 2 A and compact dimensions of 56 mm diameter × 292 mm length, the M1000120 is ideal for protecting distribution transformers against damaging short-circuit currents whilst maintaining dependable operation of medium voltage electrical networks.
Key Advantages
- High voltage DIN back-up fuse-link for transformer protection.
- 12 kV AC rated voltage.
- 2 A rated current.
- Controlled Power Dissipation (CPD) design reduces thermal loading.
- 63 kA breaking capacity.
- Integrated 80 N thermal striker.
- Pure silver fuse elements with ceramic body construction.
- Manufactured to IEC 60282-1 requirements.
Key Features
- Mersen Limitor®-PT back-up fuse series.
- Catalogue number: 45DB120V2PT.
- 12 kV AC rated voltage.
- 2 A current rating.
- 56 mm diameter × 292 mm length.
- 63 kA maximum breaking capacity.
- 0.4 kA²s total clearing I²t.
- 16 A minimum breaking current.
- 80 N thermal striker.
- Controlled Power Dissipation technology.
Reliable Protection for Medium Voltage Transformers
The Mersen M1000120 is designed to interrupt high fault currents rapidly before they can damage transformers, switchgear and associated medium voltage equipment. Its current-limiting characteristics reduce thermal and mechanical stress, helping improve network reliability and minimise downtime.
The Limitor®-PT range incorporates Controlled Power Dissipation technology, reducing operating temperatures whilst maintaining dependable fault interruption performance. This makes the M1000120 particularly suitable for enclosed medium voltage switchgear and transformer protection systems.
Typical Applications
- Medium voltage transformer protection.
- Utility substations.
- Industrial power distribution systems.
- Medium voltage switchgear.
- Electrical infrastructure projects.
- Renewable energy installations.
- Commercial power distribution equipment.
Technical Specifications
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| Voltage | 120 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 2 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PT Back-up Fuses | |
| Model | M1000120 | |
| Catalogue number | 45DB120V2PT | |
| Product type | High voltage DIN back-up fuse-link | |
| Application | Transformer protection | |
| Rated voltage | 12 kV AC | |
| Rated current | 2 A | |
| Breaking capacity | 63 kA | |
| Minimum breaking current | 16 A | |
| Total clearing I²t | 0.4 kA²s | |
| Cold resistance | 510 mΩ (±10%) | |
| Power dissipation | 2 W | |
| Fuse diameter | 56 mm | |
| Fuse length | 292 mm | |
| Mounting | DIN clip mounting | |
| Thermal striker | 80 N | |
| Body material | Ceramic | |
| Fuse element | Pure silver | |
| End caps | Silver-coated copper | |
| EAN | 3605340452938 | |
| RoHS compliant | Yes | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen M1000120 used for?
The Mersen M1000120 is a DIN high voltage back-up fuse-link designed to protect medium voltage transformers against damaging short-circuit currents.
What voltage is the M1000120 rated for?
The fuse has a rated operating voltage of 12 kV AC.
What current rating does this fuse have?
The Mersen M1000120 has a continuous current rating of 2 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 292 mm.
Trusted by Utilities and Electrical Engineers Worldwide
Mersen Limitor®-PT high voltage fuse-links are trusted worldwide to provide dependable transformer protection, controlled power dissipation and reliable interruption of high fault currents in medium voltage electrical systems.
