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MERSEN FUSE H 1209P BCKUP TS VDE442-78/100 45DB120V100PTS3
Mersen R1018317 Limitor-PTS DIN high voltage back-up fuse-link with low power dissipation and thermal striker for transformer protection. Rated 12 kV AC and 100 A.
£141.34
Why Choose the Mersen R1018317 High Voltage Transformer Fuse?
The Mersen R1018317 is a premium DIN high voltage back-up fuse-link developed to protect transformers and medium voltage equipment against damaging short-circuit currents. As part of the advanced Mersen Limitor®-PTS series, it combines low power dissipation with an integrated thermal striker, making it particularly suitable for modern air-insulated and gas-insulated switchgear installations.
The innovative Limitor®-PTS range features an optimised fuse-element design that significantly reduces power losses while introducing a thermal striker to help prevent overheating within the fuse compartment. Manufactured using pure silver fuse elements, silver-coated copper contact caps and a high-strength ceramic body, the R1018317 delivers reliable protection and long service life in demanding industrial and utility environments.
Rated at 12 kV AC and 100 A, the Mersen R1018317 is designed for transformer protection in medium voltage distribution systems. Its 78 mm diameter, 442 mm length and integrated 80 N thermal striker allow straightforward installation into compatible DIN fuse bases and switchgear. Siemens and Ormazabal recommend the Limitor®-PTS range for compatible gas-insulated switchgear.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage for industrial and utility power systems.
- 100 A rated current.
- Low power dissipation helps reduce fuse compartment heating.
- Integrated 80 N thermal striker for switchgear tripping and indication.
- High current-limiting performance minimises fault energy.
- Pure silver fuse elements for dependable interruption.
- Recommended for compatible Siemens and Ormazabal switchgear.
Key Features
- Mersen Limitor®-PTS back-up fuse series.
- Catalogue number: 45DB120V100PTS3.
- 12 kV AC rated voltage.
- 100 A rated current.
- 78 mm fuse diameter.
- 442 mm fuse length.
- Integrated 80 N thermal striker.
- Low power dissipation fuse design.
- Pure silver fuse elements.
- Silver-coated copper contact caps.
- High-strength ceramic body.
Reliable Protection for Medium Voltage Transformers
The Mersen R1018317 rapidly interrupts high prospective short-circuit currents before excessive thermal or mechanical stress can damage transformers, switchgear or associated electrical equipment. Its current-limiting characteristics minimise fault energy while the low power dissipation design helps improve switchgear reliability.
The integrated thermal striker provides dependable operation of compatible trip mechanisms while helping prevent overheating inside sealed switchgear compartments. This makes the Limitor®-PTS range particularly suitable for compact modern medium voltage installations.
Typical Applications
- Medium voltage transformer protection.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear.
- Industrial power distribution.
- Utility substations.
- Renewable energy installations.
- Manufacturing facilities.
- OEM medium voltage equipment.
Technical Specifications
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| Voltage | 120 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 100 A | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTS Back-up Fuses with Low Power Dissipation and Thermal Striker | |
| Model | R1018317 | |
| Catalogue number | 45DB120V100PTS3 | |
| Product type | DIN high voltage back-up fuse-link | |
| Primary application | Transformer protection | |
| Rated voltage | 12 kV AC | |
| Rated current | 100 A | |
| Breaking capacity | 80 kA | |
| Clearing I²t | 150 kA²s | |
| Minimum breaking current | 350 A | |
| Cold resistance | 7.5 mΩ | |
| Power dissipation at rated current | 95 W | |
| Fuse diameter | 78 mm | |
| Fuse length | 442 mm | |
| Thermal striker | 80 N | |
| Fuse element material | Pure silver | |
| Contact cap material | Silver-coated copper | |
| Body material | Ceramic | |
| Weight | Approx. 5.1 kg | |
| Frequency | 50 / 60 Hz | |
| Applicable standard | IEC 60282-1 / VDE T402 | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen R1018317 used for?
The Mersen R1018317 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 12 kV AC with a continuous current rating of 100 A.
What makes the Limitor®-PTS series different?
The Limitor®-PTS range combines low power dissipation with an integrated thermal striker to reduce heating inside switchgear while maintaining dependable transformer protection.
Does the R1018317 include a thermal striker?
Yes. It incorporates an integrated 80 N thermal striker for compatible switchgear tripping and indication mechanisms.
What are the physical dimensions?
The fuse-link measures 78 mm in diameter and 442 mm in length.
Trusted by Power Distribution Engineers Worldwide
Mersen Limitor®-PTS fuse-links are trusted by utilities, switchgear manufacturers and industrial engineers worldwide for dependable transformer protection, low power dissipation and reliable medium voltage fault interruption.
