Littelfuse, Inc. Battery Protection Fuses ESR3XLDB0550

The Littelfuse Energy Storage Rack (ESR) series of fuses is designed specifically to protect battery racks in energy storage systems, inverters, and many other dc applications. The 1500 V dc high-speed square body fuse is extremely fast-acting to respond quickly to a range of fault currents to safeguard the battery module or other devices.This Class aBat partial range fuse has superior short circuit protection and a low minimum breaking capacity (MBC)—from 300 % or 3 times the fuse’s rated current to 175 kA (250 kA self-certified)—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. High dc interrupting facilitates scaling up systems without requiring a redesign of circuit protection 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 Conforms to the IEC60269-7 battery circuit protection standard Compact NH 1XL size saves space and offers design flexibility