Products
Littelfuse, Inc.
ESR Fuses Offer a Wider Range of Protection for Battery Racks

ESR Fuses Offer a Wider Range of Protection for Battery Racks

The Littelfuse Energy Storage Rack (ESR) series of fuses are designed specifically to protect battery racks from a range of fault currents to help prevent equipment damage or expensive system failures. The 1500 V dc high-speed square body fuse is extremely fast-acting to respond quickly to safeguard the battery module. Available in NH 1XL and 3XL sizes and a variety of amperages.

This Class aBat partial range ESR fuse has superior short circuit protection and a low minimum breaking capacity (MBC)—from 300 % or 3 times the fuse’s rated current to 250 kA—to cover a range of over currents that traditional high-speed partial range fuses do not protect against.

The ESR fuse safely interrupts most faults in a battery storage system to avoid catastrophic failures and costly shutdowns.

Features and Benefits:

--High dc interrupting rating provides superior short-circuit protection and the ability to scale-up systems without the need to redesign the existing circuit protection, saving time and costs

--The low minimum breaking current offers easy coordination with battery modules and reduces size and rating of dc contactors to save space and costs

--Extremely fast acting delivers high-speed performance

--Low watt loss maximizes efficiency by preventing energy loss and minimizing the wasted power of components

--Conforming to the IEC60269-7 battery standard, the ESR series is specifically designed to safeguard evolving battery technologies with fuse circuit protection

--Compact NH 1XL and 3XL sizes save space and offer design flexibility

Applications:

--Battery energy storage systems (BESSs) – Battery Protection Unit (BPU) and battery racks
--Power conversion systems
--Dc common bus systems
--Hybrid PV-BESS inverters
Voltec Power & Lighting
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How to Properly Protect a BESS Power Circuit from Overcurrents

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A battery energy storage system requires proper circuit protection. Overcurrents not only frequently damage systems, but are also the culprit of downtime, which is detrimental to a company’s bottom line. Fuses are a great way to protect a system simply and cost-effectively. Learn how to properly protect a BESS power circuit from overcurrents with this application guide.
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