

The Littelfuse 400 Series is a TE5 Time Lag Fuse with High Breaking Capacity.
- Operate at temperatures from –40°C to 125°C
- Higher nominal melting I2T
- Higher interrupt rating
- Broad current rating 500mA to 6.3A
- Lead-Free, Halogen-Free, Compliance with RoHS
- Shock safe casing
400 Parts
Filters
Showing 1 to 12 of 22 Total Results
Part Number | Actions | Maximum AC Voltage (V) | Resistance (Ω) | Nominal Melting I2T (A2sec) | Opening | Max Operating Temperature (°C) | Minimum Operating Temperature (°C) | interrupt Voltage (V) -1 | Agency Approvals |
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Part Number | Actions | Maximum AC Voltage (V) | Resistance (Ω) | Nominal Melting I2T (A2sec) | Opening | Max Operating Temperature (°C) | Minimum Operating Temperature (°C) | interrupt Voltage (V) -1 | Agency Approvals | |
---|---|---|---|---|---|---|---|---|---|---|
125 | 2200 | 0.00000000845 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 280 | 0.0000000766 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 80 | 0.000000462 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 44 | 0.00000123 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 16 | 0.0000081 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 3.52 | 0.0000666 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 2.55 | 0.000115 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 1.38 | 0.000385 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 1 | 0.000691 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 2.3 | 0.00409 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 1.75 | 0.0064 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR | |||
125 | 1.25 | 0.00945 | Very Fast-Acting (FF) | 125 | -55 | 125 | UR |
400 Applications
- SMPS for NB, printers, adaptors, consumer electronics, industrial controllers, battery chargers
Series: 400 Resources

Circuit Protection Selection Guide
Consult this guide to learn about circuit protection considerations and the solutions Littelfuse offers. Tables help match products with applications.