Up for sale are obsolete AEC (#6301) 15 AMP, 120/240 VAC TWIN PLUG-IN FUSE HOLDERS for use with all AEC (AMALGAMATED ELECTRIC CORP) 100 AMP and 200 AMP FUSE BOX PANELS. AEC (#6301) FUSE HOLDERS are designed to ONLY accept 15 AMP SCREW PLUG-IN FUSES so you don't OVER-FUSE your CIRCUIT by installing the wrong AMPERE SIZE FUSE ~ please feel free to email me for price, pick-up or shipping information.