Found 3 alternatives for 0461.500ER by Littelfuse Inc.. Electrical Specialty Fuses — 2-SMD, Square End Block.
FUSE BRD MNT 1.25A 600VAC/80VDC
FUSE BRD MNT 500MA 250VAC 2SMD
FUSE BRD MNT 1.25A 250VAC 2SMD