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Approvals & Standards

IEC 60282-1

  • IEC 60644
  • 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.
Mersen HV fuse link for motor protection is specially designed to protect HV motors against the effect of short circuit current and support repeated peak currents due motor starting.
Mersen uses the best materials : fuse elements are in pure silver, caps are in silver-plated brass and body is in melamine fiber glass.
As defined in the IEC 60644 the coefficient K is 0.51.

More specifications


HV motor protection

  • HV motor pump protection
  • For indoor use
  • Operating temperature -25°C to +40°C

Product Specifications

Item Number


Catalog number


Item Description (ERP)

1209P CPASJB 45/50,8.442 80  


DIN 43625 fuse for HV motor, IEC 60644, 442mm, 45mm, striker 50N, 12kV, 80A  

EAN/UPC code


Rated voltage AC IEC

12   kV

Rated current

80   A

Fuse size

d=50,8mm L=442mm  



Clearing I2t At Rated Voltage

48   kA²s

AC Max I.R./Breaking Capacity: I1

50   kA

Minimum breaking capacitiy (MBC)

416   A

Power Dissipation at Intermediate Current Value

41 W @ 0.7 In  

Indication System


Indication System Type


Contact materials

Silver-Plated Brass  

Connection/Terminal Type


Body/Insulating Material

Melamine fiber glass  

Product Weight

2.2   kg

Product Diameter

50.8   mm

Product Length

508   mm

Sell Pack Quantity

3   EACH

Sell Pack Weight

6.6   kg

Sell Pack Width

270   mm

Sell Pack Length

610   mm

Sell Pack Height

100   mm