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Littelfuse Seeks to Unify Fuse Calculation in Energy Storage System Industry

Technical Paper Addresses How to Adequately Determine Fuse Sizes for Overcurrent Protection

CHICAGO, August 8, 2023 — Littelfuse, Inc.(NASDAQ: LFUS), a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world, has published the technical paper, “Fuses for Battery Energy Storage Systems.” The paper addresses how to adequately size fuses for overcurrent protection to maintain the safe and uninterrupted operation of a battery energy storage system (BESS).

It is common for overcurrents to damage the electrical equipment in battery energy storage systems. They may also cause system damage and downtime which can be costly. The BESS industry is experiencing tremendous growth and this paper provides valuable information regarding sizing fuses for circuit protection to help prevent overcurrent scenarios.


Given that Littelfuse is the leader in circuit protection, we play a critical role in helping to enable our customers’ energy storage system applications.

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Immanuel Umenei Littelfuse Industrial Business Senior Global Manager, Renewable Energy

This circuit protection fuse sizing guide showcases our critical application expertise and helps to close the knowledge gap to ensure BESSs are safe and operational.

Immanuel Umenei Littelfuse Industrial Business Senior Global Manager, Renewable Energy

This technical paper includes:

  • Where circuit protection is important in a BESS
  • Reverse coordination: a modified version of selective coordination
  • How to size fuses within each of the overcurrent-prone areas within a BESS
  • Case studies

To download the technical paper, click here. For more information, visit Littelfuse.com/BESS.

About Littelfuse

Littelfuse (NASDAQ: LFUS) is a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 18,000 global associates, we partner with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, our products are found in a variety of industrial, transportation and electronics end markets — everywhere, every day. Learn more at Littelfuse.com.

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