Mersen D076478 Limitor aSJB/D high voltage motor protection fuse rated at 12 kV AC and 32 A with 20 N striker.
£646.58
The Mersen D076478 is a premium high voltage DIN back-up fuse from the renowned Limitor® aSJB/D range, specifically designed to protect medium voltage motors against the effects of short circuit currents. Developed for demanding industrial applications, it delivers dependable fault interruption while withstanding the repeated peak currents associated with motor starting.
Manufactured using high purity silver fuse elements, silver-plated brass end caps and a durable melamine fibreglass body, the D076478 offers excellent electrical performance and long operational life. An integrated 20 N striker provides reliable mechanical indication and operation with compatible switchgear and motor control equipment.
With a 12 kV AC rated voltage, 32 A current rating and 50.8 mm × 442 mm DIN dimensions, this fuse is ideally suited for protecting high voltage motors in industrial plants, utilities, mining operations and infrastructure projects where dependable medium voltage motor protection is essential.
The Mersen Limitor® aSJB/D range has been specifically engineered for protecting medium voltage motors against damaging short circuit faults while tolerating the repeated peak currents created during motor starting. This makes the range particularly suitable for demanding industrial applications where operational reliability is essential.
The D076478 is widely used in motor control centres, mining operations, manufacturing plants, utility installations and infrastructure projects where dependable medium voltage motor protection is required.
| Manufacturer | Mersen |
|---|---|
| Model | D076478 |
| Catalogue number | 45ASB120V32P-3 |
| Product type | High voltage motor protection fuse |
| Series | Limitor® aSJB/D |
| Application | Medium voltage motor protection |
| Rated voltage | 12 kV AC |
| Rated current | 32 A |
| Breaking capacity | 50 kA AC |
| Minimum breaking current | 168 A |
| Clearing I²t | 5 kA²s |
| Power dissipation | 21 W at 0.7 In |
| Fuse size | Ø50.8 mm × 442 mm |
| Mounting | Clip |
| Striker force | 20 N |
| Body material | Melamine fibreglass |
| Fuse element | High purity silver |
| Terminal material | Silver-plated brass |
| Weight | Approximately 2.2 kg |
| Compliance | IEC 60644, REACH |
It is a high voltage back-up fuse specifically designed to protect medium voltage motors against short circuit faults.
The D076478 has a rated operating voltage of 12 kV AC.
This fuse has a 32 A current rating.
Yes. It features an integrated 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 and manufacturing facilities.
Mersen Limitor® aSJB/D fuse-links are trusted by OEMs, utilities and industrial engineers worldwide for reliable medium voltage motor protection, high interrupting 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...