Axial Lead & Cartridge Fuses 520 mm > Fast-Acting > 487 Series RoHS Pb 487 Series, 520 mm, Fast-Acting Fuse Description The 487 Series is a 420VAC/420VDC rated 5x20mm fast- acting ceramic body fuse, designed to ensure the best coordination between a power supply unit (PSU) and an electrical circuit breaker panel during short-circuit and over- current faults. When installed in a PSU, the 487 series fuse opens faster than the circuit breaker and removes the problematic PSU while preventing the circuit breaker from shutting down other critical systems. With 420VAC characteristics, the 487 Series is well suited for high- energy applications like 3-phase power supplies, inverters, and ballasts. With 420VDC characteristics, it is optimal for high-voltage DC power grid in data centers, telecom applications, and intelligent commercial buildings. Agency Approvals Features 2 Lower I t and faster RoHS compliant and Agency Agency File Number Ampere Range tripping Lead-free E10480 8 - 20A High current ratings up Recognized to UL 248-1 J 50293210 8 - 20A to 20A in a 5x20mm and UL 248-14 footprint Approved to EN 60127-1 Rated voltage 420VAC, and EN 60127-7 420VDC Available in cartridge and axial leaded versions Electrical Characteristics for Series Applications Telecom power supplies % of Ampere Rating Opening Time Data center server power supplies 100% 60 minutes, Minimum Higher energy and power efficient applications 210% 30 minutes, Maximum 275% 0.04 sec., Min. 20 sec. Max. 400% 0.01 sec., Min. 1.0 sec. Max. 1000% 0.03 sec., Max. Additional Information Datasheet Resources Samples 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 08/22/19Axial Lead & Cartridge Fuses 520 mm > Fast-Acting > 487 Series Electrical Characteristic Specifications by Item Nominal Agency Approvals Max Voltage Nominal Melting Amp Code Amp Rating Interrupting Rating Cold Resistance 2 2 Rating (V) I t (A sec.) (Ohms) 008. 8 0.0134 65 x x 010. 10 0.0093 130 x x 12.5 12.5 0.0078 170 x x 420VDC 300A 420VDC 420VAC 200A 420VAC 015. 15 0.0075 190 x x 016. 16 0.0064 260 x x 020. 20 0.0043 390 x* x * Additional 750A 250VAC interrupting rating for 20A. Temperature Rerating Curve Average Time Current Curves 10000 1000 100 10 1 0.1 0.01 0.001 1 10 100 1000 Note: CURRENT (Amps) Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 08/22/19 8A TIME IN SECONDS 10A 12.5A 15A 16A 20A