FOR SALE IS ONE (1) NEW 30 amp FAST ACTING TYPE W YELLOW COLOR WITH EDISON (screw in) BASE BY BUSSMANN BRAND (aka BUSS) UPC# 051712101042. THIS LEGACY SCREW IN FUSE IS NOW OBSOLETE AND DIFFICULT TO FIND. FOR LIGHTING, HEATING OR OTHER CIRCUITS THAT DO NOT CONTAIN ELECTRIC MOTORS, EDISON BASE SIZE, THIS FUSE THREADS INTO FUSE RECEPTACLES OR BUSSMAN SERIES BOX COVER UNITS. THIS W type FUSE IS GENERAL PURPOSE AND HAS NO TIME DELAY FEATURE AND SHOULD NOT BE USED IN CIRCUITS THAT CONTAIN MOTORS. NEW OLD STOCK AND MAY SHOW SIGNS OF STORAGE, TESTED PERFECT, NEVER USED, ONE (1) FUSE PER ORDER. EDISON (screw in) BASE, FAST ACTING, FOR 125V OR LESS AC, UL LISTED, THIS TYPE W FAST ACTING FUSE IS FOR CIRCUITS NOT CONTAINING MOTOR DRIVEN TOOLS OR APPLIANCES (example window air conditioner, pump, hair dryer, etc). A MOTOR STARTING SURGE may BLOW THIS TYPE W YELLOW color FAST ACTING SCREW IN FUSE (since it is designed for circuits NOT containing motor driven tools or appliances). FOR ALL RESIDENTIAL FUSE PANELS THAT ACCEPT EDISON BASE FUSES. AN EDISON SCREW IN BASE IS THE SAME SIZE AS A CLASSIC AND STANDARD LIGHT BULB SCREW IN BASE. THIS IS A NEAR OBSOLETE 30 amp CLASSIC FUSE WITH AN EDISON SCREW IN STYLE BASE. THIS TYPE W FUSE WAS QUICKLY MODIFIED BY BUSS, TO INCLUDE TIME DELAY AND OTHER FEATURES, TO HELP PREVENT BLOWING FUSE. THE TIME DELAY FEATURE IS NOT PRESENT ON THIS FAST ACTING FUSE MANUFACTURED BY COOPER BUSSMANN. YOU WILL RECEIVE ONE (1) NEW BUSS BRAND W TYPE EDISON BASE 30 amp FAST ACTING FUSE SHIPPED BY USPS FIRST CLASS MAIL..... BID AND BUY HERE IN IN ABSOLUTE CONFIDENCE SINCE I HAVE THOUSANDS OF POSITIVE FEEDBACK AND TEN+ YEARS EXPERIENCE. I SHIP WITHIN TWO DAYS OF RECEIPT OF PAYMENT, OFTEN THE NEXT DAY. FREE USPS FIRST CLASS GREEN SHIPPING. I USE RECYCLED PACKAGING MATERIALS AND ENVIRONMENTALLY FRIENDLY MATERIALS TO ANYWHERE USA. I DO NOT SHIP ANYWHERE ELSE. HAVE A GREAT DAY AND THANK YOU FOR STOPPING BY.......