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 VDE 442-78/80 45DB240V80PTS
Mersen Z1018324 Limitor-PTS DIN high-voltage back-up transformer fuse rated at 24 kV AC and 80 A, with a 65 kA breaking capacity, low power dissipation and an integrated 80 N thermal striker.
£134.88
Why Choose the Mersen Z1018324 High-Voltage Transformer Fuse?
The Mersen Z1018324, catalogue reference 45DB240V80PTS, is a high-performance DIN high-voltage back-up fuse-link designed to protect power transformers against the thermal and dynamic effects of short-circuit currents. Part of the advanced Mersen Limitor®-PTS series, it combines low power dissipation with a thermal striker for dependable protection in medium-voltage switchgear and electrical distribution systems.
Rated at 24 kV AC and 80 A, the Z1018324 provides a maximum breaking capacity of 65 kA. Its current-limiting operation helps reduce peak fault current and clearing energy, minimising electrical, thermal and mechanical stress on transformers, switchgear and connected equipment.
The fuse-link incorporates an 80 N thermal striker, which provides positive operation indication and helps prevent overheating within the fuse compartment by actuating compatible switchgear mechanisms. Pure silver fuse elements, silver-plated copper terminals and a durable ceramic body provide reliable performance in air and gas insulated switchgear applications.
Key Advantages
- DIN high-voltage back-up fuse-link for transformer protection.
- 24 kV AC rated voltage for medium-voltage distribution systems.
- 80 A rated current for suitably coordinated transformer circuits.
- 65 kA maximum breaking capacity for dependable fault interruption.
- Low power dissipation helps reduce heat inside switchgear compartments.
- Integrated 80 N thermal striker for indication and switchgear operation.
- Current-limiting performance reduces thermal and dynamic fault effects.
- Manufactured using pure silver elements and a ceramic insulating body.
Key Features
- Mersen Limitor®-PTS back-up fuse series.
- 24 kV AC IEC rated voltage.
- 80 A ampere rating.
- 65 kA maximum breaking capacity.
- 280 A minimum interrupting rating.
- 99 kA²s clearing I²t at rated voltage.
- 153 W power dissipation at rated current.
- VDE T402 design configuration.
- Thermal striker indication system with 80 N operating force.
- Silver-plated copper cylindrical terminals.
- Pure silver fuse elements and ceramic body.
Low-Loss Protection for Medium-Voltage Transformers
The Mersen Z1018324 is engineered to interrupt severe short-circuit currents before they can cause extensive damage to transformer windings, electrical connections and associated switchgear. Its current-limiting characteristics reduce the peak current and total fault energy passing through the protected circuit.
The Limitor®-PTS design uses specially developed fuse elements to reduce power losses and heat generation. Its thermal striker can actuate compatible switching equipment if abnormal heating occurs, helping protect the fuse compartment and improve the reliability of compact air or gas insulated switchgear installations.
Typical Applications
- Medium-voltage power transformer protection.
- Gas insulated switchgear systems.
- Air insulated switchgear installations.
- Compact switchgear and ring main units.
- Utility substations and electrical distribution networks.
- Industrial medium-voltage power systems.
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 | 80 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTS Back-up Fuses with Low Power Dissipation and Thermal Striker | |
| Model | Z1018324 | |
| Catalogue number | 45DB240V80PTS | |
| Product type | High-voltage DIN back-up fuse-link | |
| Application | Transformer protection | |
| Rated voltage | 24 kV AC | |
| Rated current | 80 A | |
| Maximum breaking capacity | 65 kA | |
| Minimum interrupting rating | 280 A | |
| Clearing I²t at rated voltage | 99 kA²s | |
| Power dissipation at rated current | 153 W | |
| Fuse body size | 78 mm diameter × 442 mm length | |
| Overall product length | 508 mm | |
| Product diameter | 78 mm | |
| Mounting type | Clip mounting | |
| Design | VDE T402 | |
| Indication system | Thermal striker | |
| Striker force | 80 N | |
| Terminal type | Cylindrical | |
| Terminal material | Silver-plated copper | |
| Fuse element material | Pure silver | |
| Body material | Ceramic | |
| Product weight | 5.1 kg | |
| EAN / UPC | 3605340513332 | |
| Compliance | IEC high-voltage fuse requirements and RoHS | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen Z1018324 used for?
The Mersen Z1018324 is a DIN high-voltage back-up fuse-link designed to protect power transformers against severe short-circuit currents.
What are the voltage and current ratings of this fuse?
The Z1018324 is rated at 24 kV AC with a continuous current rating of 80 A.
What is the breaking capacity of the Z1018324?
The fuse-link has a maximum breaking capacity of 65 kA and a minimum interrupting rating of 280 A.
What is the purpose of the thermal striker?
The integrated 80 N thermal striker provides operation indication and can actuate compatible switchgear mechanisms to help prevent overheating within the fuse compartment.
Where can the Mersen Z1018324 be installed?
The fuse is suitable for transformer protection in air insulated switchgear, gas insulated switchgear, compact substations and medium-voltage electrical distribution systems.
Trusted High-Voltage Protection from Mersen
Mersen Limitor®-PTS fuse-links are widely used by switchgear manufacturers, utilities and industrial engineers where low power losses, dependable transformer protection and reliable short-circuit interruption are essential.
