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MERSEN FUSE H 1759P BCKUP 367-56/31,5 45DB175V32P
Mersen A1000569 Limitor-P DIN high-voltage transformer back-up fuse rated at 17.5 kV AC and 31.5 A, with a 63 kA breaking capacity and integrated 80 N striker.
£70.24
Why Choose the Mersen A1000569 High-Voltage Transformer Fuse?
The Mersen A1000569, catalogue number 45DB175V32P, is a dependable DIN high-voltage back-up fuse designed to protect transformers against damaging short-circuit currents. Part of the established Mersen Limitor®-P series, it is intended for use in high-voltage switchgear, controlgear and electrical distribution systems.
Rated at 17.5 kV AC and 31.5 A, the A1000569 provides high current limitation and rapid fault interruption. By restricting the peak current and clearing energy during a short circuit, it helps reduce thermal and mechanical stress on transformer windings, conductors and associated switchgear.
The fuse is manufactured using pure silver fuse elements, silver-plated copper terminals and a durable ceramic body. Its 56 × 367 mm DIN fuse format is designed for clip mounting, while the integrated 80 N striker provides fuse-operation indication and can actuate compatible switchgear mechanisms.
Key Advantages
- Designed specifically for high-voltage transformer protection.
- 17.5 kV AC rated voltage for medium-voltage systems.
- 31.5 A rated current.
- High 63 kA breaking capacity.
- Current-limiting operation reduces damaging fault energy.
- Integrated 80 N striker for indication and mechanical actuation.
- Robust ceramic construction for demanding installations.
- Suitable for indoor and outdoor high-voltage equipment.
Key Features
- Mersen Limitor®-P transformer back-up fuse.
- Manufacturer part number: A1000569.
- Catalogue number: 45DB175V32P.
- Rated voltage: 17.5 kV AC.
- Rated current: 31.5 A.
- Maximum breaking capacity: 63 kA.
- Minimum interrupting current: 105 A.
- Fuse size: 56 × 367 mm.
- Design: VDE T4.
- Indication system: Standard 80 N striker.
Reliable Protection for Medium-Voltage Transformers
The Mersen A1000569 protects transformers by interrupting high short-circuit currents before they can cause extensive damage. Its current-limiting action restricts both the peak fault current and the total energy passed into the protected system, helping safeguard transformer windings, cables and switchgear components.
As a back-up fuse, the A1000569 is intended primarily to clear high-value fault currents. It must be coordinated with suitable switching or protective equipment to provide complete 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 and outdoor high-voltage equipment.
- Fuse-switch combinations for transformer circuits.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Voltage | 175 V | |
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 31.5 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-P | |
| Manufacturer part number | A1000569 | |
| Catalogue number | 45DB175V32P | |
| Product type | DIN high-voltage transformer back-up fuse | |
| Rated voltage | 17.5 kV AC IEC | |
| Rated current | 31.5 A | |
| Maximum breaking capacity | 63 kA | |
| Minimum interrupting current | 105 A | |
| Clearing I²t at rated voltage | 10 kA²s | |
| Power dissipation at rated current | 95 W | |
| Fuse diameter | 56 mm | |
| Nominal fuse length | 367 mm | |
| Overall product length | Approximately 433 mm | |
| Mounting type | Clip mounting | |
| Terminal type | Cylindrical | |
| Terminal material | Silver-plated copper | |
| Fuse element material | Pure silver | |
| Body material | Ceramic | |
| Design classification | VDE T4 | |
| Indication system | Striker | |
| Striker force | 80 N | |
| Current type | AC | |
| Product weight | Approximately 2.2 kg | |
| EAN | 3605340467741 | |
| Compliance | IEC 60282-1 and RoHS compliant | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen A1000569 used for?
The A1000569 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 A1000569?
The fuse has an IEC rated voltage of 17.5 kV AC.
What is the rated current of this fuse?
The Mersen A1000569 has a rated current of 31.5 A.
What is the breaking capacity of the A1000569?
The fuse has a maximum AC breaking capacity of 63 kA and a minimum interrupting current of 105 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 A1000569 a full-range fuse?
No. It is a back-up fuse designed primarily 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®-P high-voltage fuse-links are used by transformer manufacturers, utilities, switchgear builders and industrial engineers to provide dependable short-circuit protection in medium-voltage power systems.
