Axial Lead & Cartridge Fuses 3AG > Fast Acting > 312/318 Series PS 312/318 Series Lead-Free 3AG, Fast-Acting Fuse E Description The 3AG Fast-Acting Fuse solves a broad range of application requirements while offering reliable performance and cost-effective circuit protection. Features U >VV >Vi1 U , -V>> Standard 248-14 Lead-free U >>LiV> i and axial lead format and with various forming dimensions Agency Approvals Applications Agency Agency File Number Ampere Range Used as supplementary protection in appliance or E10480 312 Series: 62mA - 10A 318 Series: 62mA - 10A utilization equipment to provide individual protection for AU1410 312 Series: 12A - 30A components or internal circuits. 312 Series: 62mA - 30A LR 29862 318 Series: 62mA - 10A Electrical Characteristics for Series NBK040205- PS 312/318 Series: 1A - 10A E E10480B/F % of Ampere Ampere Rating Opening Time Rating E10480 318 Series: 12A - 30A 100% 62mA 35A 4 hours, Minimum 312/318 Series: SU05001- 135% 62mA 35A 1 hour, Maximum 1A/ 1.25A / 1.6A/ 5005/5006/6005/6008 2A - 10A 10mA 10A 5 sec., Maximum 200% 12A 30A 10 sec., Maximum 312 Series: 62mA - 10A 318 Series: 62mA - 10A 35A 20 sec., Maximum 312/318 Series 2009 Littelfuse, Inc. 1 Specications are subject to change without notice. Revised: February 15, 2012 Please refer to www.littelfuse.com/series/312.html or /318.html for current information. 312/318 SeriesIntroduction to Circuit ProtectionIntroduction to Circuit Protection Axial Lead & Cartridge Fuses Transientology 3AG > Fast Acting > 312/318 Series Electrical Characteristic Specications by Item Nominal Agency Approvals Voltage Nominal Amp Ampere Interrupting Cold Rating Melting PS Code Rating (A) Rating Resistance 2 2 E (V) I t (A sec) (Ohms) .062 0.062 250 24.7000 0.000249 x x x .100 0.1 250 11.2800 0.00102 x x x .125 0.125 250 7.1450 0.00289 x x x .150 0.15 250 5.1300 0.00550 x x x .175 0.175 250 3.8750 0.00960 x x x .187 0.187 250 3.4200 0.0128 x x x .200 0.2 250 3.0200 0.0165 x x x 35A 250Vac 10KA 125Vac .250 0.25 250 2.0100 0.0355 x x x .300 0.3 250 1.4050 0.0689 x x x .375 0.375 250 0.8250 0.185 x x x .500 0.5 250 0.4980 0.483 x x x .600 .6 250 0.3620 0.880 x x x .750 0.75 250 0.2445 1.84 x x x 001. 1 250 0.1900 0.760 x xxxx 1.25 1.25 250 0.1385 1.45 x xxxx 01.5 1.5 250 0.1036 2.35 x x x x 01.6 1.6 250 0.0934 2.80 x xxxx 1.75 1.75 250 0.0856 3.60 x x x x 100A 250Vac 01.8 1.8 250 0.0825 3.85 x x x x 10KA 125Vac 002. 2 250 0.0704 5.20 x xxxx 2.25 2.25 250 0.0594 7.20 x xxxx 02.5 2.5 250 0.0513 9.54 x xxxx 003. 3 250 0.0427 14.0 x xxxx 004. 4 250 0.0293 28.5 x xxxx 005. 5 250 0.0224 50.0 x xxxx 006. 6 250 0.0178 118.0 x xxxx 200A 250Vac 10KA 125Vac 007. 7 250 0.0146 118.0 x xxxx 008. 8 250 0.0122 166.0 x xxxx 010. 10 250 0.0093 298.0 x xxxx * ** 012. 12 32 0.0072 234.6 x x x * ** 015. 15 32 0.0052 490.5 x x x * ** 020. 20 32 0.0035 1029 x x x 300A 32 Vac * ** 025. 25 32 0.0024 2041 x x x * ** 030. 30 32 0.0019 3717 x x x 035. 35 32 0.0013 7531 NOTES: ** For 318 Series 12A to 30A, the agency approval is only cURus. 312/318 Series 2009 Littelfuse, Inc. 2 Specications are subject to change without notice. Please refer to www.littelfuse.com/series/312.html or /318.html for current information.