Mersen Introduces DQS Series Fast-Acting Fuses

July 11, 2023

Mersen Introduces DQS Series Fast-Acting Fuses

High-Speed Semiconductor Fuses for DC Systems

Mersen, a global expert in electrical protection and control for electrical power systems, announces its latest DC (Direct Current) high performance round body fuses, high-speed DQS series fuses. 

D100QS and D70QS high-speed fuses are Mersen’s next evolution for the protection of high-power conversion applications for those industries shifting to DC systems. DQS series fuses are 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.

Fuses in the DQS Series include:
  • D100QS Series: 50-300A, 1000VDC, L/R ≤1ms, 100kA IR, MBC<3kA
  • D70QS Series: 50-600A, 700VDC, L/R ≤1ms, 20kA IR
Applications include:
  • 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 UPS and inverters

Electrification in construction, marine, agriculture, manufacturing, mining, transportation, and other industries is a critical trend in cleaner energy. Mersen D100QS and D70QS series fuses were developed in response to market need for DC fuses in these industries. The D100QS and D70QS series provide unique performance characteristics allowing customers to safely protect their equipment and personnel.  

Click to visit the D100QS and D70QS series product pages. For more information about Mersen, visit ep.mersen.com

Source

Related Article

Mersen Introduces Gen2 Class J Fuse Blocks

Related Articles


Latest Articles


Changing Scene

  • ABB Among TIME’s World’s Most Sustainable Companies

    ABB Among TIME’s World’s Most Sustainable Companies

    June 30, 2025 ABB has been ranked 14th in TIME’s “World’s Most Sustainable Companies 2025” and third in Switzerland across all industries. TIME and Statista assessed over 5,000 of the world’s largest and most influential companies, considering factors such as revenue, market capitalization, and public prominence. The top 500 companies from 35 countries and 21 industries were… Read More…

  • New Partnership to Deliver 1,000 Affordable Housing Units Across Quebec

    New Partnership to Deliver 1,000 Affordable Housing Units Across Quebec

    June 25, 2025 The governments of Canada and Quebec, together with Desjardins, have announced the construction of 1,000 new affordable housing units over the next three years. These housing units will be created as part of the Desjardins Affordable Housing Initiative, a partnership launched in 2022 that will now enable the delivery of over 3,000 affordable housing units… Read More…

  • CIB Closes $50M Loan with Dream Industrial REIT to Fund Large-Scale Commercial Building Upgrades

    CIB Closes $50M Loan with Dream Industrial REIT to Fund Large-Scale Commercial Building Upgrades

    June 30, 2025 The Canada Infrastructure Bank (CIB) and Dream Industrial Real Estate Investment Trust have finalized a $50 million loan to fund commercial property retrofits related to energy efficiency savings and emissions reductions at 34 warehouses in Alberta, Ontario and Quebec. With buildings currently accounting for 18% of Canada’s total emissions, investments from the… Read More…

  • Province, BC Hydro Launch Pilot Program to Cut Energy Costs, Support Housing Density

    Province, BC Hydro Launch Pilot Program to Cut Energy Costs, Support Housing Density

    June 25, 2025 In a Canadian first, the Province and BC Hydro have launched a pioneering pilot project in Vancouver that has the potential to set new standards for supporting growing housing priorities and densification in Canada. Designed to support the transition from single-family homes to multi-unit residences, the initiative is exploring how full electrification –… Read More…