Littelfuse 570/571/576 Series Fuse Holders Littelfuse 570/571/576 Series Fuse Holders include a cap for TE5/TR5 type fuses. The holders feature a 250V rated voltage and max. current/power ratings of 6.3A/2.5W (Series 570 & 571) or 6.3A/1.6W (Series 576). The 570 Series features panel mounting with a 12.7mm diameter with D-hole or double D-hole. The 571 and 576 Series are printed circuit board (PCB) mounted with 7.62mm hole spacing for wave soldering. All three series have solderable terminals and the 570 Series also has a 2.8mm quick connect option that fits 0.5mm tab.