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 3.7A * Trip time 8.7 sec * Hold current 1.85A * Max voltage 30V * Max current 40A * Radial leaded package * Initial resistance 0.03 to 0.06R * Post-trip resistance 0.09R * Lead pitch 5.8mm * Dimensions 10.2mm x 7.6mm x 15.7mm * UL and TUV approved Note: Previously manufactured by Raychem. https://elecena.pl/product/27216279/littlefuse-ruef185-1-85a-polyswitch-fuse 2024-11-10 https://elecena.pl/product/27216279/littlefuse-ruef185-1-85a-polyswitch-fuse 2026-04-08