Universal ATR Blade Fuses (ATR-20) by Bussmann®. Amperage Rating: 20A. Trad’l pack. Color: Yellow. 5 Fuses per pack, 20 packs per shelf carton. 2-Leg micro fuses. These space-saving fuses are used on newer vehicle. New, space-saving fuses on newer vehicles, the ATR uses the same color-coding as ATM and ATC fuses. The industry standard – used in most domestic and imported cars today. All Bussmann series blade fuses meet or exceed OEM and SAE standards.