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Approvals & Standards

  • Some UL listed to standard File E143362

Key features & benefits

Mersen fuses for the protection of transformers and distribution lines deliver overload and short circuit protection. These current-limiting fuses will melt at current that can be as low as 1.7 times the fuse current ratings up to its maximum interrupting rating. These fuses are designed to withstand the transformer magnetizing inrush current. They have 2" (size C), 3" (size D) and 2x3" (size DD) inch diameter barrels with ferrules and are mounted in spring reinforced clips.

More specifications

Applications

  • Protection for up to 5.5 kV transformers or distribution systems.

Product Specifications

Frequency (Hz)

50/60   Hz

Ampere range

1/2 to 450 A  

Speed/Characteristic

E-Rated  

REACH Compliant

Yes  

Max Operating Temp.

80   °C

Max Storage Temp.

80   °C

Min Storage Temp.

-25   °C

Harmonized System

853510  

References in this series  (102)

A055F2D0R0-400E

400   A

-

-

Yes  

9.0718   kg

A055F2D0R0-450E

450   A

-

-

Yes  

9.0718   kg

A055F2DSR0-250E

250   A

-

-

Yes  

9.1399   kg

A055F2DSR0-300E

300   A

-

-

Yes  

9.1399   kg

A055F2DSR0-350E

350   A

-

-

Yes  

9.1399   kg

A055F2DSR0-400E

400   A

-

-

Yes  

9.1399   kg

A055F2DSR0-450E

450   A

-

-

Yes  

9.1399   kg

A055F2DTR0-250E

250   A

-

-

Yes  

9.0718   kg

A055F2DTR0-300E

300   A

-

-

Yes  

9.0718   kg

A055F2DTR0-350E

350   A

-

-

Yes  

9.0718   kg

A055F2DTR0-400E

400   A

-

-

Yes  

9.0718   kg

A055F2DTR0-450E

450   A

-

-

Yes  

9.0718   kg