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Approvals & Standards

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

Key features & benefits

EVpack-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.
EVpack-fuse provides the ultimate protection of the battery pack 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 550VDC, Current rating (In)= 5 to 50A, Interrupting Rating (IR) = 20kA, L/R ≤1ms, Minimum Breaking Capacity (MBC) < 3kA for a perfect matching with DC contactor.

More specifications


  • EV/HEV
  • Electrical Energy Storage
  • Battery pack protection
  • Battery Disconnect Unit (BDU)
  • Battery Junction Box for auxiliaries
  • Battery charger
  • Supercapacitor pack protection
  • Backup protection for DC relay / disconnector / switch
  • Maintenance Safety Disconnect (MSD)

Product Specifications

Item Number


Catalogue No.


Item Description (ERP)


Short Description

EVpack-fuse MEV55, 550 VDC Max., L/R ≤ 1ms 20 A, P PC Board Mount  



Rated voltage DC UL

550   V

Ampere Rating

20   A

ROHS Compliant



PC Mount  

Max. Rated Breaking Capacity DC

20 kA @ 550 V, L/R ≤ 1 ms  

Min Interrupting Rating (MBC)

40   A

Power Dissipation at Intermediate Current Value

0.54 W @ 0.5 In  

Connection/Terminal Material

Tin-Plated Copper  

Connection/Terminal Type

Slot Mount  

Product Weight

0.022   lb

Product Diameter

0.41   in

Product Length

1.55   in

Product Height

0.62   in

Sell Pack Quantity

100   EACH

Sell Pack Weight

2.183   lb

Sell Pack Width

5.12   in

Sell Pack Length

8.12   in

Sell Pack Height

1.62   in