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Littlefuse RUEF400 4.0A Polyswitch Fuse

Order Code:  

26-0775

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Brand: Raychem  Copy to clipboard MPN: RUEF400 Copy to clipboard
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Qty Unit Price (Ex VAT)
5+ £0.348
50+ £0.279
100+ £0.217

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492 in Stock, despatched same dayAdditional quantity lead time 14 days

The Littelfuse Polyswitch is a resettable device that performs like a fuse under overcurrent conditions, but is unique in that it will reset. As soon as an overcurrent condition is reached the Polyswitch heats up to its trip temperature.


  • Trip current 8A
  • Trip time 12.7 sec
  • Hold current 4A
  • Max voltage 30V
  • Max current 40A
  • Radial leaded package
  • Initial resistance 0.01 to 0.03R
  • Post-trip resistance 0.05R
  • Lead pitch 5.8mm
  • Dimensions 14mm x 7.6mm x 20.1mm
  • UL and TUV approved

Note: Previously manufactured by Raychem.

Trip Current 8A
Trip Time 12.7s
Max Current Rating 40A
Max Voltage Rating 30V
Height 19.3mm
Hold Current 4A
Initial Resistance 0.03Ω
Lead Pitch 5.8mm
Length 14mm
Package/Case Style Radial leaded

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