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Approvals & Standards

  • UL Recognized: UL File: E60314; DC: 50-600A, 700VDC
  • Power Cycling & Vibration
  • REACH/RoHS compliant

Key features & benefits

Electrification in construction, marine, agriculture, manufacturing, mining, and other industries, in addition to transportation, is a critical trend in cleaner energy. The D70QS North American style round body high-speed fuse series is Mersen’s next evolution for high-power conversion applications protection for those industries shifting to Direct Current(DC) systems today. The D70QS fuse series is specifically designed to reduce the I²t, peak let-through current, and arc voltages during fault conditions to protect applications such as battery charging systems and other DC components like relays and contactors.

More specifications


  • High Power battery charging and management systems protection
  • Energy Storage Systems (ESS)
  • Electrical Energy Storage (EES)
  • Battery Disconnect Unit (BDU)
  • Battery pack protection
  • DC Fast-Charging station for EV applications
  • Backup protection for
  • DC relay/disconnector/switch
  • Protection of 700VDC or less, UPS and inverters

Product Specifications

Item Number


Catalog number



DC Fuse 700VDC UL 250A Max. Bolted  

EAN/UPC code


Rated voltage DC UL

700   V

Rated current

250   A

ROHS Compliant


AC or DC



High Speed  



Max. Rated Breaking Capacity DC

20 kA @ 700 V, L/R ≤ 1 ms  

Minimum breaking capacitiy (MBC)

1320   A

Power Dissipation at Intermediate Current Value

7.4 W @ 0.5 In  

Contact materials

Tin-Plated Copper  

Connection/Terminal Type


Body/Insulating Material


Product Weight

0.3084   kg

Product Diameter

38.1   mm

Product Length

110.2   mm

Sell Pack Quantity

10   EA

Sell Pack Weight

3.2386   kg

Sell Pack Width

111.3   mm

Sell Pack Length

196.8   mm

Sell Pack Height

76.2   mm