0463025. - 463 Series

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The 463 Series NANO²® fuse is a fast-acting, very high current fuse designed for high operating current applications. It offers enhanced thermal cycling endurance (up to 500 cycles). Its low temperature rise and excellent temperature stability characteristics make it ideal for use in datacom and telecom equipment like high-end servers, base stations, power supplies, and blade computing applications. The 463 Series offers high-amp circuit protection, ultra-high interrupting ratings (up to 500A@72VDC), and a compact (10.1mm x 3.12mm x 3.12mm) surface-mount form factor to save board space.


  • Surface mount fuse in a small footprint
  • High current rating: 15A-30A
  • Higher voltage rating up to 100VDC and 250VAC
  • High melting i2t
  • Enhanced thermal cycling endurance
  • Operating temperature range from -55°C to 125


  • High end servers
  • Base station power supply
  • Voltage regulator module for PC server
  • Cooling fan system for PC server
  • Advance Telecommunication Computing Architecture (ATCA) applications for cloud computing
  • Battery Management System (Industrial Tools) 
Property (Mouseover for details) Value
Body Ceramic
Nominal Melting I2T (A2sec) 668
Nominal Cold Resistance (Ohms) 0.00215
Opening Very Fast-Acting (FF)
VAC (V) 250
VDC (V) 100
Partner ECAD Models 0463025.
Operating Temperature -55° to 125°C

TUVicon TUVR_J50478975

0463025. ECAD Models

cRUicon CUR_JDYX8_E10480_10_30_14

URicon UR_JDYX2_E10480_101409848

cURicon cUR_JDYX8_E10480_101409848

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Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
0463025.ER FUSE 250V V/FA NANO2 ROHS 25A RoHS No 08/03/2014 PbFree No 08/03/2014 CoC_RoHS9_0463025.ER REACH219_Declaration_(Contain)_0463025.ER Yes
Contains IPC_0463025.ER
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