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 5A * Trip time 10.3 sec * Hold current 2.5A * Max voltage 30V * Max current 40A * Radial leaded package * Initial resistance 0.02 to 0.04R * Post-trip resistance 0.07R * Lead pitch 5.8mm * Dimensions 11.4mm x 7.6mm x 18.3mm * UL and TUV approved Note: Previously manufactured by Raychem. https://elecena.pl/product/27216278/littlefuse-ruef250-2-5a-polyswitch-fuse 2024-11-10 https://elecena.pl/product/27216278/littlefuse-ruef250-2-5a-polyswitch-fuse 2025-03-22 https://elecena.pl/product/27216278/littlefuse-ruef250-2-5a-polyswitch-fuse 2025-05-21 https://elecena.pl/product/27216278/littlefuse-ruef250-2-5a-polyswitch-fuse 2025-06-08 https://elecena.pl/product/27216278/littlefuse-ruef250-2-5a-polyswitch-fuse 2025-07-17 https://elecena.pl/product/27216278/littlefuse-ruef250-2-5a-polyswitch-fuse 2026-04-08