Mersen E076479 Limitor aSJB/D high voltage motor protection fuse rated at 12 kV AC and 50 A with a 20 N striker.
£683.33
The Mersen E076479 is a premium high voltage DIN back-up fuse from the proven Limitor® aSJB/D range, specifically engineered to protect medium voltage motors against short-circuit faults while withstanding the repeated peak currents associated with motor starting. Designed in accordance with IEC 60644, it provides dependable protection for demanding industrial motor applications.
Manufactured using pure silver fuse elements, silver-plated brass end caps and a durable melamine fibreglass body, the E076479 delivers excellent electrical performance and long operational life. Its integrated 20 N striker provides reliable mechanical indication and operation with compatible medium voltage switchgear and motor starters.
With a rated operating voltage of 12 kV AC, a rated current of 50 A and a 50.8 mm × 442 mm DIN format, the Mersen E076479 is ideally suited for protecting high voltage motors in manufacturing plants, utilities, mining operations and heavy industrial applications.
The Mersen Limitor® aSJB/D range has been specifically developed to protect medium voltage motors against damaging short-circuit currents while tolerating the repeated peak currents generated during motor starting. This allows dependable motor protection without nuisance fuse operation during normal starting conditions.
The E076479 is widely used within motor control centres, industrial processing plants, mining operations, utility installations and OEM switchgear where reliable medium voltage motor protection is essential.
| Manufacturer | Mersen |
|---|---|
| Model | E076479 |
| Catalogue number | 45ASB120V50P-3 |
| EAN | 3605340017946 |
| Product type | High voltage motor protection fuse |
| Series | Limitor® aSJB/D |
| Application | Medium voltage motor protection |
| Rated voltage | 12 kV AC |
| Rated current | 50 A |
| Maximum breaking capacity | 50 kA AC |
| Minimum interrupting rating | 244 A |
| Operating I²t at rated voltage | 12 kA²s |
| Power dissipation | 31 W at 0.7 In |
| Fuse size | Ø50.8 mm × 442 mm |
| Mounting | Clip |
| Terminal type | Cylindrical |
| Striker force | 20 N |
| Body material | Melamine fibreglass |
| Fuse element | Pure silver |
| Terminal material | Silver-plated brass |
| Approximate weight | 2.2 kg |
| Compliance | IEC 60644, REACH, RoHS |
It is a high voltage back-up fuse specifically designed to protect medium voltage motors against short-circuit faults while accommodating motor starting currents.
The E076479 has a rated operating voltage of 12 kV AC.
This fuse has a 50 A rated current.
Yes. It incorporates a 20 N striker for mechanical indication and operation with compatible switchgear.
It is commonly installed within medium voltage motor starters and switchgear protecting industrial motors in utilities, mining operations and manufacturing facilities.
Mersen Limitor® aSJB/D fuse-links are trusted worldwide by OEMs, utilities and industrial engineers for dependable medium voltage motor protection, excellent interruption performance and long service life.
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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...