0456040.SD - 456SD Series

Series: 456SD
Questions? Contact Littelfuse Support
Littelfuse Fuse 456SD Image
Roll Over to Zoom
Disclaimer Notice

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 456SD Series NANO²® fuse is a small sized, surface-mountable high current fuse which provides over-current and excessive surge current protection for applications operating at high current in a limited space. This will be a supplementary offering to the existing 456 and 881 Series where the 50A fuse rating is not available.

Such applications are mostly served today through a single large-sized high-current industrial type fuse or in some cases, parallel configuration of lower amperage SMD fuses. The 456SD 50A Series fuse gives the option of a single fuse solution for protection for such application requirements.


  • Available in ratings of 40 to 50A
  • High interrupting rating - 600A@75VDC
  • Very low cold resistance, temperature rise, and voltage drop
  • High inrush/surge current withstand capability
  • Surface mountable high current fuse


  • Single fuse solution for high current application
  • Suitable for a wide variety of voltage requirement and application
  • Enhances power efficiency
  • Avoids nuisance opening due to high inrush and surge current inherent in the system
  • Compatible with high volume assembly requirements


  • Voltage regulator module for PC server
  • Cooling fan system for PC server
  • Storage system power
  • Basestation power supply
  • Power tools
Property (Mouseover for details) Value
Body Ceramic
Nominal Melting I2T (A2sec) 1700
Nominal Cold Resistance (Ohms) 0.0013
Opening Fast-Acting (F)
Breaking Capacity VDC 600A @ 75
Breaking Capacity VAC 100A @ 125
VAC (V) 125
VDC (V) 75
Partner ECAD Models 0456040.SD
Operating Temperature -55° to 125°C
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
0456040.DRSD FUSE 125V F/A NANO2 ROHS 40A RoHS No 02/04/2019 PbFree No 05/07/2009 CoC_RoHS9_0456040.DRSD REACH_SVHC Declaration (Contain)_0456040.DRSD Yes
Contains IPC_0456040.DRSD
If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.