508.5 - 508 Series

Series: 508 Questions? Contact Littelfuse Support
508 Series 3AB 1000V AC/DC High Voltage Cartridge Fuse
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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.

It is a ceramic body 6.3x32mm size 3AB fuse with remarkable interrupting rating designed for high-energy 1000V AC/DC protection in the multimeter market and similar applications.


  • In accordance with Underwriter's Laboratories™ Standard UL248-14
  • Available in cartridge
  • Pluggable into clips or shock safe holders
  • RoHS compliant and Lead-free
  • Superior Interrupting rating of 10,000 Amperes
  • Compact form factor of 6.3 X 32mm


  • Used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits.
Property (Mouseover for details) Value
Ampere Rating (A) 0.5
Body Ceramic
Nominal Melting I2T (A2sec) 0.259
Interrupting Rating 10000A@1000VDC
Marking Code MX
Moisture Sensitivity Level Contact Littelfuse
Nominal Cold Resistance (Ohms) 3.572
Opening Fast-Acting (F)
Min Operating Temp °C -55
Max Operating Temp (°C) 125
Package Size 3AB/3AG (6.3x32mm)
VAC (V) 1000
VDC (V) 1000

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    PbFree7/4/2012 RoHS7/4/2012