314 Series - 3AB 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.

The 3AB Fast-Acting Fuse with ceramic body construction 
permits higher interrupting ratings and voltage ratings. Ideal 
for applications where high current loads are expected.


  • In accordance with UL Standard 248-14
  • Available in cartridge and axial lead format and with various forming dimensions
  • RoHS compliant and Lead-free

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)Nominal Melting I2T (A2sec)Resistance
Interrupting RatingBodyMarking CodeMSLMin Operating Temp °CMax Operating Temp (°C)StockSamplesCompare
0314.1250.1252500.001496.2510000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314.2500.252500.0141.9610000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314.3750.3752500.210.82610000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314.5000.52500.6390.50410000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314.7500.752502.0610.25210000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314001.12500.690.1910000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314002.22505.70.070410000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314003.325014.60.0434510000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314004.425010.40.047310000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314005.5250260.030210000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314006.6250450.0241510000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314007.7250710.018810000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314008.82501050.015410000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314010.102502060.0105410000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314012.122505700.00764510000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314015.152502920.00507510000A@125VDCCeramic BodyVXContact Littelfuse-55125CheckOrder
0314020.202506310.0035710000A@125VACCeramic BodyVXContact Littelfuse-55125CheckOrder
0314025.2525014500.00236400A@125VACCeramic BodyVXContact Littelfuse-55125CheckOrder
0314030.3025024900.00183400A@125VACCeramic BodyVXContact Littelfuse-55125CheckOrder

Littelfuse_Suzhou_CQCISO14001icon Suzhou CQC ISO 14001

Littelfuse_Suzhou_CQCISO9001 2000icon Suzhou CQC ISO 90012000 GBT 19001 2000

Littelfuse_Suzhou_ISOTS16949icon Suzhou ISOTS 16949

314 324 Series Time Curve Data

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