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Approvals & Standards

IEC 60282-1

  • VDE 0670 part 4
  • VDE 0670 part 402
  • 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®-PTD HV fuse-links are back-up fuses as defined in the standards: IEC 60282-1 and VDE 0670 T402 and dedicated to protect transformers in combination with air or gas insulated switchgear against the thermal and dynamic 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.
Limitor®-PTD HV fuse-links are perfectly designed to be used in combination with HV switchgear.
Siemens and Ormazabal recommend Limitor®-PTD HV fuses to be used in their gas-insulated switchgear.

More specifications


HV Transformer protection

Product Specifications

Item Number


Catalogue No.


Item Description (ERP)

H 1209UP BCKUP T VDE292-56/40  

Short Description

HV fuse, DIN , VDE, 12kV 40A, 292mm, 45mm, medium striker 80N, thermal striker  



Rated voltage AC IEC

12   kV

Ampere Rating

40   A

Fuse Size

d=56mm, L=292mm  



Clearing I2t At Rated Voltage

14   kA²s

AC Max I.R./Breaking Capacity: I1

63   kA

Min Interrupting Rating (MBC)

134   A

Power Dissipation at Rated Current Value

46   W

Indication System


Indication System Type


Connection/Terminal Material

Silver-Plated Copper  

Connection/Terminal Type


Body/Insulating Material


Product Weight

3.748   lb

Product Diameter

2.2   in

Product Length

14.09   in

Sell Pack Quantity

1   EACH

Sell Pack Weight

3.748   lb

Sell Pack Width

2.76   in

Sell Pack Length

14.57   in

Sell Pack Height

2.56   in