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MERSEN FUSE H 1209UP BCKUP T292-56/10 45DB120V10PT
Mersen Q1000123 Limitor-PT high voltage DIN back-up fuse-link rated at 12 kV AC and 10 A, with controlled power dissipation and an integrated 80 N striker for transformer protection.
£64.45
Why Choose the Mersen Q1000123 High Voltage Transformer Protection Fuse?
The Mersen Q1000123 is a dependable high voltage DIN back-up fuse-link designed to protect transformers and associated medium voltage equipment against damaging short-circuit currents. As part of the established Mersen Limitor®-PT series, it provides reliable current-limiting protection for high voltage switchgear, controlgear and electrical distribution systems.
This fuse-link is manufactured using pure silver fuse elements, silver-coated copper caps and a durable ceramic body. These carefully selected materials provide consistent electrical characteristics, effective fault interruption and dependable long-term performance in demanding industrial, commercial and utility installations.
With a rated voltage of 12 kV AC, a rated current of 10 A and a 56 mm diameter × 292 mm fuse body, the Q1000123 is suitable for transformer protection systems requiring a DIN-format fuse-link. Its controlled power dissipation design and integrated 80 N striker support reliable operation and coordinated fault isolation within compatible medium voltage switchgear.
Key Advantages
- Designed specifically for high voltage transformer protection.
- 12 kV AC rated voltage for medium voltage systems.
- 10 A current rating for compatible transformer circuits.
- Controlled power dissipation helps manage thermal loading within switchgear.
- Integrated 80 N striker for fault indication and switchgear operation.
- Current-limiting operation helps reduce damaging fault energy.
- Pure silver fuse elements provide consistent electrical performance.
- Robust ceramic construction supports dependable service life.
Key Features
- Mersen Limitor®-PT high voltage DIN back-up fuse-link.
- Catalogue number: 45DB120V10PT.
- Rated voltage: 12 kV AC.
- Rated current: 10 A.
- Fuse body diameter: 56 mm.
- Fuse body length: 292 mm.
- Integrated 80 N striker mechanism.
- Controlled power dissipation construction.
- VDE T4 DIN-format transformer fuse design.
- Back-up fuse classification in accordance with IEC 60282-1.
Reliable Protection for High Voltage Transformers
High voltage back-up fuse-links protect transformers by rapidly limiting and interrupting severe short-circuit currents before excessive thermal or mechanical stress can damage transformer windings, switchgear or connected distribution equipment. Their current-limiting action also helps reduce the peak current and energy passed into a fault.
The Mersen Q1000123 combines dependable transformer protection with controlled power dissipation to help manage heat within enclosed switchgear. Its integrated striker can provide fault indication or operate compatible switching equipment, supporting coordinated circuit isolation following fuse operation.
Typical Applications
- Medium voltage transformer protection.
- High voltage switchgear assemblies.
- Transformer substations.
- Ring main units.
- Industrial power distribution systems.
- Utility distribution equipment.
- Renewable energy installations.
- OEM transformer controlgear.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Voltage | 120 V | |
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 10 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PT | |
| Model | Q1000123 | |
| Catalogue number | 45DB120V10PT | |
| Product type | High voltage DIN back-up fuse-link | |
| Primary application | Transformer protection | |
| Rated voltage | 12 kV AC IEC | |
| Rated current | 10 A | |
| Current type | AC | |
| Fuse body diameter | 56 mm | |
| Fuse body length | 292 mm | |
| Indication system | Striker | |
| Striker force | 80 N | |
| Power dissipation design | Controlled power dissipation | |
| Fuse-element material | Pure silver | |
| Cap material | Silver-coated copper | |
| Body material | Ceramic | |
| Fuse classification | Back-up fuse | |
| Design | VDE T4 | |
| Applicable standard | IEC 60282-1 | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen Q1000123 used for?
The Mersen Q1000123 is a high voltage DIN back-up fuse-link designed to protect transformers and associated switchgear against damaging short-circuit currents.
What are the voltage and current ratings?
The fuse-link has a rated voltage of 12 kV AC and a rated current of 10 A.
What size is the Q1000123 fuse-link?
The fuse body measures 56 mm in diameter and 292 mm in length.
Does this fuse include a striker?
Yes. It incorporates an 80 N striker that can provide fault indication or operate compatible switchgear when the fuse-link functions.
What does controlled power dissipation mean?
Controlled power dissipation helps manage heat generated by the fuse-link, reducing thermal loading within compatible high voltage switchgear installations.
Is the Q1000123 suitable for overload protection?
The Q1000123 is a back-up fuse intended primarily to interrupt high short-circuit currents. It should be coordinated with suitable protective equipment capable of clearing lower-level overload currents.
Trusted by Power Distribution Professionals Worldwide
Mersen Limitor® high voltage fuse-links are widely used by utilities, switchgear manufacturers, electrical contractors and industrial engineers for dependable transformer and medium voltage equipment protection.
