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 0.6A * Trip time 3 sec * Hold current 0.3A * Max voltage 72V * Max current 40A * Radial leaded package * Initial resistance 0.88 to 1.33R * Post-trip resistance 2.1R * Lead pitch 5.1mm * Dimensions 7.4mm x 7.6mm x 13mm * UL and TUV approved Note: Previously manufactured by Raychem. https://elecena.pl/product/27216271/littlefuse-rxef030-0-3a-polyswitch-fuse 2024-11-10 https://elecena.pl/product/27216271/littlefuse-rxef030-0-3a-polyswitch-fuse 2025-07-17