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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.
For the Limitor®-PTS range, Mersen innovates with new fuse-element designs to reduce power losses and new thermal striker to prevent overheating in the fuse compartment of the switch gear.
Mersen uses the best materials : fuse-elements are in pure silver, caps are in copper coated with silver and body is in ceramic.
Limitor®-PTS HV fuse-links are dedicated to protect transformers in combination with air or gas insulated switchgear against the thermal and dynamic effects of short-circuits.
Siemens and Ormazabal recommend Limitor®-PTS HV fuses to be used in their gas-insulated switchgear.

More specifications


Best used in SF6 insulated switch gear and compact switch gear

  • HV Transformer protection


Product Specifications

Item Number


Catalog number



High Voltage DIN Back-up fuse for Transformer Limitor® VDE T402 24kVAC IEC 20A d56mm, L442mm With Thermal Striker 80N Low power losses  

EAN/UPC code


Rated voltage AC IEC

24   kV

Rated current

20   A

Fuse size

d=56mm, L=442mm  



Clearing I2t At Rated Voltage

3900   A²s

AC Max I.R./Breaking Capacity: I1

65   kA

Minimum breaking capacitiy (MBC)

91   A

Power Dissipation at Rated Current Value

53   W

Indication System


Indication System Type


Contact materials

Silver-Plated Copper  

Connection/Terminal Type


Body/Insulating Material


Product Weight

2.3   kg

Product Diameter

56   mm

Product Length

508   mm

Sell Pack Quantity

1   EACH

Sell Pack Weight

2.3   kg

Sell Pack Width

110   mm

Sell Pack Length

550   mm

Sell Pack Height

100   mm