Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE H 2409P BCKUP TS VDE442-88/100 45DB240V100PTS
Mersen A1018325 Limitor-PTS DIN high-voltage transformer back-up fuse rated at 24 kV AC and 100 A with low power dissipation and an 80 N thermal striker.
£178.12
Why Choose the Mersen A1018325 High-Voltage Transformer Fuse?
The Mersen A1018325, catalogue number 45DB240V100PTS, is a premium DIN high-voltage back-up fuse engineered for transformer protection in medium-voltage electrical systems. As part of the advanced Mersen Limitor®-PTS series, it features low power dissipation and an integrated thermal striker, making it particularly suitable for modern air-insulated and gas-insulated switchgear installations.
Developed using pure silver fuse elements, silver-plated copper end caps and a robust ceramic body, the A1018325 delivers dependable protection against the thermal and dynamic effects of short circuits. The innovative thermal striker helps prevent overheating within the fuse compartment, improving system safety and extending equipment life.
With a rated voltage of 24 kV AC, a rated current of 100 A and a 65 kA breaking capacity, this fuse is ideally suited for protecting distribution transformers used in industrial facilities, utilities and compact substations. Siemens and Ormazabal recommend the Limitor®-PTS range for compatible gas-insulated switchgear.
Key Advantages
- Designed specifically for medium-voltage transformer protection.
- 24 kV AC IEC rated voltage.
- 100 A rated current.
- 65 kA breaking capacity.
- Very low power losses improve operating efficiency.
- Integrated 80 N thermal striker helps prevent overheating.
- Suitable for air-insulated and gas-insulated switchgear.
- High-quality ceramic construction with pure silver fuse elements.
Key Features
- Mersen Limitor®-PTS transformer back-up fuse.
- Manufacturer part number: A1018325.
- Catalogue number: 45DB240V100PTS.
- Rated voltage: 24 kV AC.
- Rated current: 100 A.
- Maximum breaking capacity: 65 kA.
- Minimum interrupting current: 350 A.
- Fuse dimensions: 88 × 442 mm.
- Thermal striker: 80 N.
- Clip-mounted cylindrical terminals.
Reliable Protection for High-Voltage Transformers
The Mersen A1018325 rapidly interrupts high short-circuit currents before they can damage distribution transformers or associated switchgear. Its current-limiting design reduces both peak fault current and fault energy, helping protect transformer windings, conductors and electrical equipment.
Its patented thermal striker technology provides an additional layer of protection by responding to overheating within the fuse compartment. This makes the Limitor®-PTS range particularly suitable for compact switchgear installations where thermal management is critical.
Typical Applications
- Medium-voltage distribution transformers.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear.
- Compact transformer substations.
- Industrial electrical distribution.
- Utility power networks.
- High-voltage commercial installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Voltage | 240 V | |
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 100 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTS | |
| Manufacturer part number | A1018325 | |
| Catalogue number | 45DB240V100PTS | |
| Product type | DIN high-voltage transformer back-up fuse | |
| Rated voltage | 24 kV AC IEC | |
| Rated current | 100 A | |
| Maximum breaking capacity | 65 kA | |
| Minimum interrupting current | 350 A | |
| Clearing I²t | 159 kA²s | |
| Cold resistance | 13.6 mΩ (±10%) | |
| Power dissipation | 200 W | |
| Fuse diameter | 88 mm | |
| Nominal fuse length | 442 mm | |
| Mounting type | Clip mounting | |
| Terminal type | Cylindrical | |
| Terminal material | Silver-plated copper | |
| Fuse element material | Pure silver | |
| Body material | Ceramic | |
| Striker force | 80 N thermal striker | |
| Current type | AC | |
| Product weight | Approximately 6.1 kg | |
| EAN | 3605340513349 | |
| Compliance | IEC 60282-1, VDE T402 and RoHS compliant | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen A1018325 used for?
The A1018325 is a DIN high-voltage back-up fuse designed to protect distribution transformers against damaging short-circuit currents.
What is the voltage rating?
This fuse has a rated operating voltage of 24 kV AC.
What is the current rating?
The Mersen A1018325 has a rated current of 100 A.
What is the breaking capacity?
The fuse provides a maximum AC breaking capacity of 65 kA with a minimum interrupting current of 350 A.
What does the thermal striker do?
The integrated 80 N thermal striker helps prevent overheating within the fuse compartment while also providing mechanical indication and switchgear actuation where required.
Which switchgear manufacturers recommend this fuse?
Mersen states that Limitor®-PTS fuse-links are recommended for compatible gas-insulated switchgear from manufacturers including Siemens and Ormazabal.
Trusted High-Voltage Protection from Mersen
Mersen Limitor®-PTS high-voltage fuse-links are trusted by utilities, transformer manufacturers, switchgear builders and industrial engineers to provide dependable transformer protection with reduced power losses and enhanced thermal safety.
