Littelfuse releases Energy Storage Rack line of fuses

By Kelly Pickerel | September 14, 2022

Littelfuse has launched its Energy Storage Rack (ESR) series of fuses designed specifically to protect battery racks from a range of fault currents to help prevent equipment damage and expensive system failures. The 1,500-VDC high-speed square body fuse is extremely fast-acting to respond quickly, safeguarding the battery module or other devices in energy storage, power conversion, and DC common bus systems as well as hybrid inverters.

"The ESR is a Class aBat partial range fuse with superior short circuit protection and a low minimum breaking capacity — from 300% or three-times the fuse rated current to a maximum DC fault current of 250 kA," stated Sakthidharan Krishnamoorthy, product manager, Littelfuse Industrial Business Unit. "With these features, the ESR fuse offers a wider range of DC over-current protection to battery-powered systems than other fuses. In addition, the high DC short circuit capabilities optimize space and deliver cost savings for energy storage system integrators."

Specifically designed to safeguard evolving battery technologies with fuse circuit protection, the ESR series conforms to the IEC60269-7 battery standard. Other features include:

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