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MERSEN FUSE H 1209P BCKUP 292-88/250 45DB120V250P
Mersen Y1014919 Limitor-P high-voltage DIN back-up fuse-link rated at 12 kV AC and 250 A with a 63 kA breaking capacity, VDE T4 design and integrated 80 N striker.
£170.10
Why Choose the Mersen Y1014919 High-Voltage Transformer Fuse?
The Mersen Y1014919, catalogue reference 45DB120V250P, is a high-voltage DIN back-up fuse-link designed to protect distribution transformers against the damaging effects of short-circuit currents. As part of the trusted Mersen Limitor®-P series, it delivers dependable protection for high-voltage switchgear, controlgear and electrical distribution systems.
Rated at 12 kV AC and 250 A, the Y1014919 provides rapid current-limiting protection by interrupting high fault currents before they reach their maximum prospective peak. This helps minimise thermal, electrical and mechanical stress on transformers, cables and associated high-voltage equipment.
Constructed with a robust ceramic body, pure silver fuse elements and silver-plated copper terminals, the fuse is built for long service life in demanding environments. Its VDE T4 DIN format measures 88 mm in diameter and 292 mm in length and incorporates an integrated 80 N striker for indication and compatible switchgear operation.
Key Advantages
- Reliable high-voltage transformer short-circuit protection.
- 12 kV AC voltage rating for medium- and high-voltage systems.
- 250 A rated current for demanding transformer applications.
- High 63 kA breaking capacity for reliable fault interruption.
- Current-limiting operation helps reduce fault energy and equipment damage.
- Integrated 80 N striker for indication and switchgear operation.
Key Features
- Mersen Limitor®-P DIN back-up fuse-link.
- Catalogue number: 45DB120V250P.
- Rated voltage: 12 kV AC.
- Rated current: 250 A.
- Breaking capacity: 63 kA.
- Minimum interrupting rating: 740 A.
- Fuse dimensions: 88 mm diameter × 292 mm length.
- 80 N striker for indication and switchgear operation.
- Pure silver fuse elements with silver-plated copper terminals.
- DIN clip-mounted VDE T4 design.
Reliable Protection for High-Voltage Transformers
The Mersen Y1014919 is designed to provide dependable protection for distribution transformers operating within medium- and high-voltage electrical networks. Its current-limiting characteristics reduce the energy released during severe electrical faults, helping extend the service life of transformers and associated switchgear.
As a back-up fuse-link in accordance with IEC 60282-1, it is intended to interrupt high fault currents above its minimum interrupting rating and should be coordinated with suitable switching equipment for complete transformer protection.
Typical Applications
- Distribution transformer protection.
- Medium- and high-voltage substations.
- Industrial electrical distribution systems.
- High-voltage switchgear and controlgear.
- Utility power distribution networks.
- Critical infrastructure power systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Voltage | 120 V | |
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 250 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-P | |
| Model | Y1014919 | |
| Catalogue number | 45DB120V250P | |
| Product type | High-voltage DIN back-up fuse-link | |
| Application | Transformer short-circuit protection | |
| Rated voltage | 12 kV AC | |
| Rated current | 250 A | |
| Current type | AC | |
| Breaking capacity | 63 kA | |
| Minimum interrupting rating | 740 A | |
| Fuse diameter | 88 mm | |
| Fuse length | 292 mm | |
| Overall product length | 358 mm | |
| Striker type | Standard striker | |
| Striker force | 80 N | |
| Power dissipation at rated current | 335 W | |
| Terminal material | Silver-plated copper | |
| Fuse-element material | Pure silver | |
| Body material | Ceramic | |
| Mounting type | Clip mounting | |
| Design | VDE T4 | |
| Product weight | 3.7 kg | |
| Standard | IEC 60282-1 | |
| EAN | 3605340501650 | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen Y1014919 used for?
The Mersen Y1014919 is a high-voltage DIN back-up fuse-link designed to protect distribution transformers against high short-circuit currents.
What are the voltage and current ratings?
The fuse is rated for 12 kV AC operation with a 250 A current rating.
What is the breaking capacity?
The Y1014919 has a maximum AC breaking capacity of 63 kA and a minimum interrupting rating of 740 A.
What are the dimensions of the fuse?
The fuse body measures approximately 88 mm in diameter and 292 mm in length, with an overall product length of approximately 358 mm.
Does the fuse include a striker?
Yes. It incorporates an integrated 80 N standard striker for indication and operation of compatible high-voltage switchgear.
Trusted High-Voltage Protection from Mersen
Mersen Limitor®-P high-voltage fuse-links are widely specified for transformer installations, substations and industrial power distribution systems where dependable current limitation and reliable short-circuit protection are essential.
