487 Series - 420VAC/420VDC 5x20mm Fast-Acting Ceramic Body Fuse

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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.

487 series is the first fast-acting fuse with both AC and DC rating from the Littelfuse 5X20mm fuse family. This fast-acting ceramic body fuse provides over-current protection for telecom power supplies and datacenter server power supplies where a high-voltage DC interrupting rating is required.


  • Lower I2t and faster tripping
  • High-current ratings up to 16A in a 5X20mm footprint
  • 420V AC rating
  • 420V DC rating


  • Telecom Power Supplies
  • Datacenter Server Power Supplies
  • Intelligent commercial buildings
  • High-energy and power efficient applications (3-phase power supplies, inverters, and ballasts)

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)Nominal Melting I2T (A2sec)Resistance
Interrupting RatingMin Operating Temp (°C)Max Operating Temp (°C)Marking CodeOpeningSizeStockSamplesCompare
4870088420650.0134200A@420VDC-55125MXFast-Acting (F)5x20mmCheckOrder
487010104201300.0093200A@420VDC-55125MXFast-Acting (F)5x20mmCheckOrder
487015154201900.0075200A@420VDC-55125MXFast-Acting (F)5x20mmCheckOrder
487016164202600.0064200A@420VDC-55125MXFast-Acting (F)5x20mmCheckOrder
487020204203900.0043200A@420VDC-55125MXFast-Acting (F)5x20mmCheckOrder
48712.512.54201700.0078200A@420VDC-55125MXFast-Acting (F)5x20mmCheckOrder
Catalog # Certificates
Sorting icon
487008 URURTUV_50119118icon
487010 URURTUV_50119118icon
487015 URURTUV_50119118icon
487016 URURTUV_50119118icon
48712.5 URURTUV_50119118icon

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