3AB Fuses (Fast Acting or Time-Lag)

Part Number Information
Part #: Price/Availability:
314 Buy Now
324 Buy Now
325 Buy Now
326 Buy Now

The Littelfuse 3AB fuse solves a broad range of application requirements while offering reliable performance and cost-effective circuit protection. The Littefuse 3AB series fuses are available in a wide current rating range (10mA to 40A ) with an operating temperature range from -55°C to 125°C. The 314/324 (fast acting) and 325/326 (time-lag) series with ceramic body construction permits higher interrupting ratings and voltage ratings. Ideal for applications where high current loads are expected. The Littelfuse 3AB series is UL 248-14 compliant.


  • Fast-acting (314/324) or Time-lag (325/326)
  • UL 248-14 compliant
  • Wide range of current ratings (10mA - 35A)
  • High voltage ratings
  • Slow-Blo 250V (10mA-20A) 125V (25A-30A)
  • Fast-acting 250V (280V also available on 15, 20, and 25A)
  • Wide operating temperature range (-55°C to 125°C)
  • RoHS compliant and lead-free
  • Available in cartridge or axial leads forms and with various lead forming dimensions


  • Power Supply
  • Consumer Electronics (video equipment, handheld portables)
  • Lighting systems
  • Medical equipment