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Approvals & Standards

  • Power Cycling & Vibrations: JASO D622
  • IATF - ISO/TS 16949 Quality management undergoing certification

Key features & benefits

M-fuse line-up belongs to the new DC Over-Current protection (O.C.P.) range developed by MERSEN to address specific needs in EV/HEV and Battery Electrical Storage System.
M-fuse provides the ultimate protection of the battery modules offering reliable clearing of DC fault currents.
It has been specifically engineered and tested to provide DC-applications best-in-class protection performance: Up to 100VDC, Current rating (In) = 50 to 200A, Interrupting Rating (IR) = 20kA, L/R ≤1.5ms, Minimum Breaking Capacity (MBC) < 1kA.

More specifications


  • Battery modules protection
  • EV/HEV
  • Electrical Energy Storage
  • Supercapacitor module protection

Product Specifications

Item Number


Catalog number


Item Description (ERP)



M-fuse MF 100VDC Max., L/R ≤1.5ms, 125 A, Round Body Fuse  

EAN/UPC code


Rated voltage DC UL

100   V

Rated current

125   A

ROHS Compliant




Minimum breaking capacitiy (MBC)

450   A

Power Dissipation at Intermediate Current Value

2.6 W @ 0.5 In  

Contact materials

Silver-Plated Brass  

Connection/Terminal Type


Product Weight

0.068   kg

Product Diameter

25.4   mm

Product Length

67.6   mm

Sell Pack Quantity

5   EACH

Sell Pack Width

81   mm

Sell Pack Length

165.1   mm

Sell Pack Height

63.5   mm