The Littelfuse 440 series is a 100% lead-free, RoHS-compliant and halogen-free fuse series designed specifically to provide over-current protection to circuits that operate under high working ambient temperatures up to 150°C and high inrush currents.

The 440 series has the ultra-high I²t ratings of up to 12.95 A²Sec for eliminating nuisance fuse openings during momentary overload conditions. The series has a maximum fault current rating of 50 A at the rated voltage and is 100% lead-free, halide-free and compliant to RoHS requirements.