313 Series - 3AG Slo-Blo® Glass Body Fuse

Fuse 313 Image
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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. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The 3AG Slo-Blo® fuse solves a broad range of application 
requirements while offering reliable performance and costeffective circuit protection.


  • 313 and 315 series fuses have time-delayed in the overload range, which provides superior protection inductive loads such as motors, transformers, and solenoids.
  • 3AG indicating fuses instantly identify themselves upon opening by showing a discoloration of their glass bodies.
  • Guesswork and time-consuming circuit testing is eliminated.
  • This unique design offers the same quality performance characteristics as the standard 3AG fuse design.

Access specifications, certifications, check availability and order parts below

Catalog #VAC (V)Nominal Melting I2T (A2sec)Resistance
BodyMSLOpeningMin Operating TemperatureOperating Temperature Maximum CelsiusPartner ECAD ModelsStockSamplesCompare
0313.0103212850.00826GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.010CheckOrder
0313.0312500.00303430GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.031CheckOrder
0313.0402500.0063300GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.040CheckOrder
0313.0622500.021120GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.062CheckOrder
0313.1002500.08543GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.100CheckOrder
0313.125250240.26GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.125CheckOrder
0313.1502500.2720GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.150CheckOrder
0313.1752500.1778.67GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.175CheckOrder
0313.1872500.238.01GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.187CheckOrder
0313.2002500.276.59GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.200CheckOrder
0313.2502500.3854.27GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.250CheckOrder
0313.3002500.733.135GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.300CheckOrder
0313.3752501.232.095GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.375CheckOrder
0313.4002501.351.875GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.400CheckOrder
0313.5002502.551.26GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.500CheckOrder
0313.60025040.912GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.600CheckOrder
0313.7002505.90.7GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.700CheckOrder
0313.7502507.160.6215GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.750CheckOrder
0313.80025080.554GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313.800CheckOrder
0313001.250140.375GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313001.CheckOrder
0313002.250770.11685GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313002.CheckOrder
0313003.2502000.05925GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313003.CheckOrder
0313004.25076.10.03105GlassContact LittelfuseSlo-Blo/Time Lag (T)/Time Delay-551250313004.