Mersen F076480 Limitor aSJB/D high-voltage motor back-up fuse rated at 12 kV AC and 63 A with a 20 N striker and 60 kA breaking capacity.
£692.86
The Mersen F076480, catalogue reference 45ASB120V63P-3, is a high-voltage back-up fuse-link specifically developed for the protection of medium-voltage motors, switchgear and controlgear. Part of the Mersen Limitor® aSJB/D series, it is engineered to withstand repeated motor starting currents while providing rapid interruption of damaging short-circuit faults.
Rated at 12 kV AC with a 63 A current rating, the F076480 delivers dependable current-limiting protection for industrial motor applications. Its back-up operating characteristic makes it ideal for coordinated protection schemes where overload protection is provided separately while the fuse clears high-energy fault currents.
The fuse-link is manufactured using a durable melamine fibreglass body, silver-plated copper fuse elements and silver-plated brass terminals. It also incorporates an integrated 20 N striker for reliable indication and operation of compatible switchgear mechanisms following fuse operation.
The Mersen F076480 is designed to withstand the repeated inrush currents associated with medium-voltage motor starting while remaining capable of rapidly interrupting severe short-circuit faults. Its current-limiting performance helps reduce the thermal and mechanical stress imposed on motors, cables and switchgear during fault conditions.
As a back-up fuse-link, the F076480 should be coordinated with suitable overload protection and selected according to the motor characteristics, starting conditions and available fault current. This coordinated approach delivers dependable protection and long service life for critical industrial equipment.
| Manufacturer | Mersen |
|---|---|
| Series | Limitor® aSJB/D |
| Item number | F076480 |
| Catalogue number | 45ASB120V63P-3 |
| Product type | High-voltage motor back-up fuse-link |
| Application | Medium-voltage motor protection |
| Rated voltage | 12 kV AC |
| Rated current | 63 A |
| Maximum breaking capacity | 60 kA |
| Minimum breaking current | 325 A |
| Total clearing I²t | 24 kA²s |
| Power dissipation | 35 W at 0.7 × rated current |
| Motor fuse coefficient K | 0.51 |
| Current type | AC |
| Fuse operating class | Back-up |
| Striker force | 20 N |
| Indication system | Integrated striker |
| Mounting method | Clip mounting |
| Fuse size | Ø50.8 × 442 mm |
| Overall length | Approximately 442 mm |
| Body material | Melamine fibreglass |
| Terminal material | Silver-plated brass |
| Fuse element material | Silver-plated copper |
| Weight | Approximately 2.2 kg |
| EAN / UPC | 3605340017953 |
| Standards | IEC 60282-1, IEC 60644, DIN 43625 |
| RoHS compliant | Yes |
The Mersen F076480 is a high-voltage back-up fuse-link designed to protect medium-voltage motors and associated switchgear against high short-circuit currents.
The fuse has a rated voltage of 12 kV AC and a rated current of 63 A.
Yes. The Limitor® aSJB/D range is specifically designed for motor applications and supports repeated starting current peaks while maintaining reliable fault protection.
The fuse has a maximum breaking capacity of 60 kA with a minimum breaking current of 325 A.
Yes. It incorporates an integrated 20 N striker for fault indication and operation of compatible switchgear mechanisms.
Mersen Limitor® aSJB/D motor fuse-links are trusted worldwide for dependable protection of medium-voltage motors, combining excellent current-limiting performance with reliable operation in demanding industrial environments.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...