Why Choose the Mersen J1000140 High Voltage DIN Back-up Fuse?
The Mersen J1000140 is a premium DIN high voltage back-up fuse developed for the protection of medium voltage transformers and electrical distribution equipment. Part of the proven Mersen Limitor®-PT series, this fuse incorporates Controlled Power Dissipation (CPD) technology and an integrated thermal striker, making it ideal for demanding utility and industrial applications.
Designed in accordance with IEC 60282-1, the J1000140 provides fast current limiting performance during short-circuit conditions while helping to reduce thermal and mechanical stress on protected equipment. Its ceramic body, pure silver fuse elements and silver-plated copper end caps ensure dependable operation and a long service life.
With a rated voltage of 24 kV AC, a 10 A current rating and an integrated 80 N thermal striker, the Mersen J1000140 is ideally suited to transformer protection in substations, switchgear assemblies and medium voltage distribution systems.
Key Advantages
- Designed for medium voltage transformer protection.
- 24 kV AC rated voltage for industrial and utility applications.
- 10 A rated current for dependable fault protection.
- Controlled Power Dissipation (CPD) technology reduces heat generation.
- Integrated 80 N thermal striker for switchgear trip mechanisms.
- Manufactured using premium ceramic and silver components for long service life.
Key Features
- Mersen Limitor®-PT high voltage back-up fuse.
- Catalogue number: 45DB240V10PT.
- 24 kV AC rated voltage.
- 10 A rated current.
- Fuse dimensions: 56 mm diameter × 442 mm length.
- Integrated 80 N thermal striker.
- Controlled Power Dissipation (CPD) design.
- Suitable for transformer and medium voltage switchgear protection.
Medium voltage back-up fuses rapidly interrupt high fault currents before they can damage transformers, switchgear and associated equipment. Their current limiting characteristics help reduce thermal and electromechanical stress, improving overall system reliability and extending equipment life.
The Limitor®-PT range combines controlled power dissipation with high interrupting capacity, making it a preferred choice for electrical engineers, utilities and OEM panel builders requiring dependable medium voltage protection.
Typical Applications
- Medium voltage transformer protection.
- Electrical substations.
- Utility distribution networks.
- Medium voltage switchgear.
- Industrial power distribution.
- OEM electrical equipment.
