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MERSEN FUSE H 1209P BCKUP TS VDE 292-56/50 45DB120V50PTS2
Mersen Y1032951 Limitor-PTS high-voltage DIN back-up fuse-link rated at 12 kV AC and 50 A with low power dissipation, 65 kA breaking capacity and integrated 80 N thermal striker.
£95.98
Why Choose the Mersen Y1032951 High-Voltage Transformer Fuse?
The Mersen Y1032951, catalogue reference 45DB120V50PTS2, 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 advanced Mersen Limitor®-PTS series, it combines dependable current-limiting protection with low power dissipation and an integrated thermal striker for use in modern high-voltage switchgear.
Rated at 12 kV AC and 50 A, the Y1032951 rapidly interrupts high fault currents before they reach their maximum prospective peak. Its low-loss design helps improve energy efficiency while reducing thermal, electrical and mechanical stress on transformers, cables and associated distribution equipment.
Manufactured using a robust ceramic body, pure silver fuse elements and silver-plated copper terminals, the fuse-link measures 65 mm in diameter and 292 mm in length. The integrated 80 N thermal striker supports reliable operation with compatible air-insulated and SF6 gas-insulated switchgear.
Key Advantages
- Reliable high-voltage transformer short-circuit protection.
- 12 kV AC voltage rating for medium- and high-voltage distribution systems.
- 50 A rated current for transformer protection applications.
- Low power dissipation reduces operating losses.
- Current-limiting operation helps minimise fault energy.
- Integrated 80 N thermal striker for indication and switchgear operation.
Key Features
- Mersen Limitor®-PTS high-voltage DIN back-up fuse-link.
- Catalogue number: 45DB120V50PTS2.
- Rated voltage: 12 kV AC.
- Rated current: 50 A.
- Breaking capacity: 65 kA.
- Minimum breaking current: 190 A.
- Total clearing I²t: 25.3 kA²s.
- Fuse dimensions: 65 mm diameter × 292 mm length.
- Thermal striker: 80 N.
- Suitable for air-insulated and SF6 gas-insulated switchgear.
Low-Loss Protection for High-Voltage Transformers
The Mersen Y1032951 is engineered to provide dependable transformer protection while reducing heat generation within high-voltage switchgear. Its current-limiting characteristics reduce the energy released during severe electrical faults, helping extend the service life of transformers and associated equipment.
The Limitor®-PTS design incorporates low power dissipation together with an integrated thermal striker, making it particularly suitable for compact air-insulated and SF6 gas-insulated switchgear where thermal management and dependable coordination are essential.
Typical Applications
- Distribution transformer protection.
- Medium- and high-voltage substations.
- Air-insulated switchgear (AIS).
- SF6 gas-insulated switchgear (GIS).
- Industrial electrical distribution systems.
- Utility power networks.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Voltage | 120 V | |
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 50 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTS | |
| Model | Y1032951 | |
| Catalogue number | 45DB120V50PTS2 | |
| Product type | High-voltage DIN back-up fuse-link | |
| Application | Distribution transformer short-circuit protection | |
| Rated voltage | 12 kV AC | |
| Rated current | 50 A | |
| Current type | AC | |
| Breaking capacity | 65 kA | |
| Minimum breaking current | 190 A | |
| Total clearing I²t | 25.3 kA²s | |
| Fuse diameter | 65 mm | |
| Fuse length | 292 mm | |
| Striker type | Thermal striker | |
| Striker force | 80 N | |
| Cold resistance | 15 mΩ | |
| Power dissipation | 62 W | |
| Body material | Ceramic | |
| Fuse-element material | Pure silver | |
| End-cap material | Silver-plated copper | |
| Mounting type | DIN clip mounting | |
| Standards | IEC 60282-1 | |
| Product weight | Approx. 1.6 kg | |
| EAN | 3605340537673 | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen Y1032951 used for?
The Mersen Y1032951 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 50 A current rating.
What are the dimensions of the fuse?
The Y1032951 measures approximately 65 mm in diameter and 292 mm in length.
Does the fuse include a thermal striker?
Yes. It incorporates an integrated 80 N thermal striker for indication and operation of compatible switchgear mechanisms.
What is the breaking capacity?
The fuse has a maximum AC breaking capacity of 65 kA and a minimum breaking current of 190 A.
Trusted High-Voltage Protection from Mersen
Mersen Limitor®-PTS high-voltage fuse-links are widely used in transformer installations and high-voltage switchgear where dependable current limitation, low operating losses and reliable thermal management are essential.
