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MERSEN FUSE H 1209P BCKUP VDE292-65/63 A1000247
Mersen A1000247 Limitor-PD DIN high-voltage transformer back-up fuse rated at 12 kV AC and 63 A, with an 80 kA breaking capacity and integrated 80 N striker.
£94.73
Why Choose the Mersen A1000247 High-Voltage Transformer Fuse?
The Mersen A1000247, catalogue number 45DB120V63PD, is a high-performance DIN high-voltage back-up fuse developed to protect transformers against damaging short-circuit currents. Part of the Mersen Limitor®-PD series, it is designed for reliable use in medium-voltage switchgear, controlgear and electrical distribution systems.
Rated at 12 kV AC and 63 A, the A1000247 delivers strong current-limiting performance during severe electrical faults. By restricting the peak current and total energy passed into the protected circuit, it helps reduce thermal and mechanical stress on transformer windings, cables and associated switchgear.
The fuse uses pure silver fuse elements, silver-plated copper terminals and a robust ceramic body for dependable electrical performance. Its nominal 65 × 292 mm DIN format is designed for clip mounting, while an integrated 80 N striker provides fuse-operation indication and can actuate compatible switchgear mechanisms.
Key Advantages
- Designed specifically for high-voltage transformer protection.
- 12 kV AC rated voltage for medium-voltage systems.
- 63 A rated current.
- High 80 kA breaking capacity.
- Strong current limitation reduces damaging short-circuit energy.
- Integrated 80 N striker for operation indication and tripping.
- Robust ceramic body for dependable industrial performance.
- Complies with recognised IEC, VDE and DIN requirements.
Key Features
- Mersen Limitor®-PD transformer back-up fuse.
- Manufacturer part number: A1000247.
- Catalogue number: 45DB120V63PD.
- Rated voltage: 12 kV AC.
- Rated current: 63 A.
- Maximum breaking capacity: 80 kA.
- Minimum interrupting current: 220 A.
- Nominal fuse size: 65 × 292 mm.
- Indication system: 80 N striker.
- Clip mounting with cylindrical terminals.
Reliable Protection for Medium-Voltage Transformers
The Mersen A1000247 is designed to interrupt high short-circuit currents before they can cause extensive damage to transformers or associated electrical equipment. Its current-limiting operation restricts the peak fault current and clearing energy, helping protect transformer windings, conductors and switchgear components.
As a back-up fuse, the A1000247 is intended primarily for high-value fault currents. It must be correctly coordinated with suitable switching or protective equipment to provide complete circuit protection across the required current range.
Typical Applications
- Medium-voltage distribution transformer protection.
- High-voltage switchgear and controlgear.
- Transformer substations.
- Industrial electrical distribution systems.
- Utility and infrastructure installations.
- Indoor medium-voltage electrical equipment.
- Fuse-switch combinations for transformer circuits.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 63 A | |
| Voltage | 12000 V | |
| Manufacturer | Mersen | |
| Series | Limitor®-PD | |
| Manufacturer part number | A1000247 | |
| Catalogue number | 45DB120V63PD | |
| Product type | DIN high-voltage transformer back-up fuse | |
| Rated voltage | 12 kV AC IEC | |
| Rated current | 63 A | |
| Maximum breaking capacity | 80 kA | |
| Minimum interrupting current | 220 A | |
| Clearing I²t at rated voltage | 63 kA²s | |
| Power dissipation at rated current | 60 W | |
| Nominal fuse diameter | 65 mm | |
| Nominal DIN fuse length | 292 mm | |
| Overall product length | Approximately 358 mm | |
| Mounting type | Clip mounting | |
| Terminal type | Cylindrical | |
| Terminal material | Silver-plated copper | |
| Fuse element material | Pure silver | |
| Body material | Ceramic | |
| Indication system | Striker | |
| Striker force | 80 N | |
| Current type | AC | |
| Product weight | Approximately 2.2 kg | |
| EAN | 3605340456356 | |
| Compliance | RoHS compliant | |
| Applicable standards | IEC 60282-1, VDE 0670 T402 and DIN 43625 | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen A1000247 used for?
The A1000247 is a high-voltage back-up fuse designed to protect transformers and associated switchgear against damaging short-circuit currents.
What is the voltage rating of the Mersen A1000247?
The fuse has an IEC rated voltage of 12 kV AC.
What is the rated current of this fuse?
The Mersen A1000247 has a rated current of 63 A.
What is the breaking capacity of the A1000247?
The fuse has a maximum AC breaking capacity of 80 kA and a minimum interrupting current of 220 A.
What does the integrated striker do?
The built-in 80 N striker provides mechanical indication when the fuse operates and can actuate a compatible switchgear tripping or signalling mechanism.
Is the Mersen A1000247 a full-range fuse?
No. It is a back-up fuse designed to interrupt high short-circuit currents and must be coordinated with suitable protective equipment for complete transformer protection.
Trusted High-Voltage Protection from Mersen
Mersen Limitor®-PD high-voltage fuse-links are used by transformer manufacturers, utilities, switchgear builders and industrial engineers to provide dependable short-circuit protection in demanding medium-voltage power systems.
