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MERSEN FUSE H 2409UP BCKUP T442-56/80 45DB240V80PT
Mersen S1000148 Limitor-PT DIN high voltage back-up fuse-link with controlled power dissipation for transformer protection. Rated 24 kV AC and 80 A.
£126.09
Why Choose the Mersen S1000148 High Voltage Transformer Fuse?
The Mersen S1000148 is a premium DIN high voltage back-up fuse-link designed to protect transformers and medium voltage electrical equipment against damaging short-circuit currents. As part of the trusted Mersen Limitor®-PT series, it incorporates controlled power dissipation (CPD), making it particularly suitable for modern compact switchgear where minimising heat build-up is critical.
Manufactured in accordance with IEC 60282-1, the S1000148 uses pure silver fuse elements, silver-coated copper contact caps and a high-strength ceramic body to provide dependable fault interruption and long operational life. Its controlled power dissipation design improves thermal performance without compromising protection.
Rated at 24 kV AC and 80 A, the Mersen S1000148 is designed for transformer protection in medium voltage power distribution systems. It features a 65 mm diameter, a 442 mm fuse length and an integrated 80 N striker for operation with compatible switchgear mechanisms.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 24 kV AC rated voltage for industrial and utility networks.
- 80 A rated current.
- Controlled power dissipation reduces switchgear heating.
- Integrated 80 N striker for compatible switchgear tripping.
- Current-limiting operation minimises damaging fault energy.
- Pure silver fuse elements ensure dependable interruption.
- Manufactured in accordance with IEC 60282-1.
Key Features
- Mersen Limitor®-PT back-up fuse series.
- Catalogue number: 45DB240V80PT.
- 24 kV AC rated voltage.
- 80 A rated current.
- 65 mm fuse diameter.
- 442 mm fuse length.
- Integrated 80 N striker.
- Controlled power dissipation (CPD).
- Pure silver fuse elements.
- Silver-coated copper contact caps.
- High-strength ceramic body.
Reliable Protection for Medium Voltage Transformers
The Mersen S1000148 rapidly interrupts high prospective short-circuit currents before excessive thermal or mechanical stress can damage transformers, switchgear or associated electrical equipment. Its controlled power dissipation design reduces heat generation inside enclosed switchgear while maintaining dependable transformer protection.
As a high voltage back-up fuse-link, the S1000148 is intended for coordinated transformer protection and should be used alongside suitable overload protection. The integrated striker enables compatible switchgear trip mechanisms or indication systems to operate whenever the fuse interrupts a fault.
Typical Applications
- Medium voltage transformer protection.
- Industrial switchgear.
- Utility substations.
- Power distribution systems.
- Renewable energy installations.
- Manufacturing facilities.
- Commercial infrastructure.
- OEM medium voltage equipment.
Technical Specifications
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| Voltage | 240 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 80 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PT Back-up Fuses with Controlled Power Dissipation | |
| Model | S1000148 | |
| Catalogue number | 45DB240V80PT | |
| Product type | DIN high voltage back-up fuse-link | |
| Primary application | Transformer protection | |
| Rated voltage | 24 kV AC | |
| Rated current | 80 A | |
| Breaking capacity | 63 kA | |
| Clearing I²t | 100 kA²s | |
| Minimum breaking current | 360 A | |
| Cold resistance | 20.5 mΩ | |
| Power dissipation at rated current | 233 W | |
| Fuse diameter | 65 mm | |
| Fuse length | 442 mm | |
| Overall length | 508 mm | |
| Striker | 80 N | |
| Mounting | Clip mounting | |
| Fuse element material | Pure silver | |
| Contact cap material | Silver-coated copper | |
| Body material | Ceramic | |
| Weight | Approx. 3.1 kg | |
| Frequency | 50 / 60 Hz | |
| Applicable standard | IEC 60282-1 | |
| EAN / UPC | 3605340453218 | |
| RoHS compliant | Yes | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen S1000148 used for?
The Mersen S1000148 is a DIN high voltage back-up fuse-link designed to protect medium voltage transformers against damaging short-circuit currents.
What are the voltage and current ratings?
This fuse-link is rated at 24 kV AC with a continuous current rating of 80 A.
What does controlled power dissipation provide?
Controlled power dissipation reduces heat generated inside switchgear, improving thermal performance while maintaining reliable transformer protection.
Does the S1000148 include a striker?
Yes. It incorporates a standard 80 N striker for operation of compatible switchgear tripping or indication mechanisms.
What are the physical dimensions?
The fuse-link measures 65 mm in diameter and 442 mm in length.
Trusted by Power Distribution Engineers Worldwide
Mersen Limitor®-PT high voltage fuse-links are trusted by utilities, switchgear manufacturers and industrial engineers worldwide for dependable transformer protection, controlled power dissipation and reliable medium voltage fault interruption.
