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Approvals & Standards

IEC 60282-1

  • VDE 0670 part 4
  • DIN 43625

Key features & benefits

Mersen HV fuse-links have been used for reliable protection in high-voltage switchgear and controlgear and high-voltage systems for decades.
Limitor®-P HV fuses are back-up fuses as defined in the IEC 60282-1 standard and dedicated to protect transformers against effects of short-circuit currents.
To guarantee high quality, Mersen uses the best materials: fuse-elements are in pure silver, caps are in copper coated with silver and bodies are in ceramic.

More specifications


HV Transformer protection

Product Specifications

Item Number


Catalogue No.


Item Description (ERP)

H 1209P BCKUP 442-88/100  

Short Description

HV fuse, DIN, VDE T4, 12kV 100A, 442mm, 45mm, medium striker 80N  



Rated voltage AC IEC

12   kV

Ampere Rating

100   A

Fuse Size

d=88mm, L=442mm  



Clearing I2t At Rated Voltage

220   kA²s

AC Max I.R./Breaking Capacity: I1

32   kA

Min Interrupting Rating (MBC)

400   A

Power Dissipation at Rated Current Value

91   W

Indication System


Indication System Type


Connection/Terminal Material

Silver-Plated Copper  

Connection/Terminal Type


Body/Insulating Material


Product Weight

7.055   lb

Product Diameter

3.46   in

Product Length

20   in

Sell Pack Quantity

1   EACH

Sell Pack Weight

7.055   lb

Sell Pack Width

4.33   in

Sell Pack Length

22.05   in

Sell Pack Height

3.94   in