Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series 325/326 Series Lead-Free 3AB, Slo-Blo® Fuse RoHS Pb PS E Description The 3AB Slo-Blo® Fuse with ceramic body construction permits higher interrupting ratings and voltage ratings. Ideal for applications where high current loads are expected. Features • In accordance with UL • RoHS compliant and Standard 248-14 Lead-free • Available in cartridge and axial lead format Agency Approvals and with various forming dimensions Agency Agency File Number Ampere Range E10480 0.250A - 10A Applications E10480 12A - 30A Used as supplementary protection in appliance or utilization equipment to provide individual protection for 29862 0.250A - 30A components or internal circuits. Cartridge: NBK 030805-E10480A 1A-3.2A NBK 030805-E10480C 4A-5A Electrical Characteristics for Series NBK 030805-E10480E 6.25A-15A PS NBK 260106-JP1021A 20A-30A E Leaded: % of Ampere Ampere Rating Opening Time NBK 030805-E10480B 1A-3.2A Rating NBK 030805-E10480D 4A-5A 100% 0.010A – 30A 4 hours, Minimum NBK 030805-E10480F 6.25A-15A NBK 260106-JP1021B 20A-30A 135% 0.010A – 30A 1 hour, Maximum SU05001-5010 7-10A 0.010A – 3.2A 5 sec., Min., 30 sec., Max. SU05001-5011 12A, 15A 200% SU05001-5012 20A 4A – 30A 5 sec., Min., 60 sec., Max. SU05001-6006 2.8A-3.2A SU05001-6007 2.5A T 50239752 01 *12A/*15A/*20A Additional Information N/A 0.010A - 30A * Approved for cartridge version only Datasheet Resources Samples Accessories 325 Series 325 Series 325 Series 325 Series Datasheet Resources Samples Accessories 326 Series 326 Series 326 Series 326 Series For recommended fuse accessories for this product series, see ‘Recommended Accessories’ section. © 2019 Littelfuse, Inc. Application testing is strongly recommended. Specifications are subject to change without notice. Revised: 04/29/19

Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series Electrical Characteristic Specifications by Item Ampere Voltage Nominal Cold Nominal Agency Approvals Interrupting Amp Code Rating Rating Resistance Melting Rating PS (A) (V) (Ohms) I2t (A2 sec) E .010 0.01 250 3324.8000 0.00013 x .031 0.031 250 332.5000 0.0110 x .062 0.062 250 91.7000 0.0276 x .100 0.1 250 33.5500 0.0870 x .125 0.125 250 100A@250Vac 22.4500 0.100 x .150 0.15 250 15.4500 0.143 x .175 0.175 250 8.9200 0.350 x .187 0.187 250 7.7250 0.330 x .200 0.2 250 6.7700 0.316 x .250 0.25 250 4.4300 0.804 x x x .300 0.3 250 3.2200 1.230 x x x .375 0.375 250 2.1550 1.20 x x x .400 0.4 250 1.9350 1.33 x x x .500 0.5 250 1.3000 4.80 x x x .600 0.6 250 0.9495 3.90 x x x .700 0.7 250 0.7215 6.42 x x x .750 0.75 250 0.6410 13.00 x x x 100A@250Vac .800 0.8 250 0.5725 8.20 x x x 10KA@125Vac 001. 1 250 0.3890 16.3 x x x x 10KA@125Vdc 01.2 1.2 250 0.2860 22.0 x x x x 1.25 1.25 250 0.2680 40.0 x x x x 01.5 1.5 250 0.1975 59.7 x x x x 01.6 1.6 250 0.1760 66.0 x x x x 002. 2 250 0.1210 118.0 x x x x 02.5 2.5 250 0.0835 185.0 x x x x x 02.8 2.8 250 0.0695 232.0 x x x x x 003. 3 250 0.0605 200.0 x x x x x 100A@250Vac 03.2 3.2 250 0.0539 214.0 x x x x x 10KA@125Vac 004. 4 250 0.0761 9.71 x x x x 005. 5 250 0.0522 25.0 x x x x 400A@250Vac 6.25 6.25 250 0.0346 60.4 x x x x 10KA@125Vac 007. 7 250 0.0227 47.3 x x x x x 10KA@125Vdc 008. 8 250 0.0193 67.1 x x x x x 010. 10 250 0.0132 137 x x x x x 400A@250Vac 012. 12 250 10KA@125Vac 0.0067 129 x x x x x*** x 600A@125Vdc 012.* 12 250 1500A@250Vac 0.0011 618 x x x 400A@250Vac 015. 15 250 10KA@125Vac 0.0050 245 x x x x x*** x 600A@125Vdc 015.* 15 250 1500A@250Vac 0.0083 760 x x x 400A@250Vac 020. 20 250 10KA@125Vac 0.0034 575 x x x x x*** x 600A@125Vdc 020.* 20 250 1500A@250Vac 0.0042 2500 x x x 025.** 25 250 1500A@250Vac 0.0032 4682 x x 025. 25 250 400A@250Vac 0.0024 1030 x x x x 10KA@60Vdc 030. 30 250 600A@125Vdc 0.0019 1690 x x x x *Higher i2t version available. Please add suffix “D” to part numbers. For instance, 0325020.MXDP, 0326020.MXDP I2t test at 10× rated current. **Higher I2t version available. Please add suffix “W” to part numbers. For instance, 0325025.MXWP ***Approved for cartridge versions only, and interrupting rating is 400A@125Vac and 400A@250Vac © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/29/19

Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series Temperature Re-rating Curve Average Time Current Curves 1000 .375A.500A.750A1.0A1.5A2.0A2.5A3.0A3.5A4.0A5.0A6.25A7.0A8.0A10.0A12.0A15.0A20.0A25.0A30.0A 100 10 S D N O C E S N ME I1 TI Note: Rerating depicted in this curve is in addition to the standard derating of 25% 0.1 for continuous operation. 0.01 0.05 0.1 1 10 100 1000 CURRENT IN AMPERES Soldering Parameters - Wave Soldering 300 Recommended Process Parameters: Measured on bottom side of board 111112222202468024680000000000 P( D r eeTTPpeehremmeenahdpptes:ee aorrtWaan Ttt Fuuaimlrrvueexee MMA:Pcaiatnirxviaamimmtiouuenmm tTee::rmperature) (116T050yp00-1i°°Lc8CCae0l aI nsdde-uFcsroternyed RsReeccomommemndeantidoan)tion mperature (°C) - 24680000 SSoollddeerr PDowt eTell mTimpeer:ature: 226-50 °sCec Monadxsimum Te 00 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 Recommended Hand-Solder Parameters: Time (Seconds) Solder Iron Temperature: 350°C +/- 5°C Preheat Time Cooling Time Dwell Time Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/29/19

Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series Product Characteristics Body: Ceramic Operating Temperature –55ºC to +125ºC Materials Cap: Nickel–plated brass MIL-STD-202, Method 107, Test Condition Thermal Shock Leads: Tin–plated Copper B:(5 cycles - 65ºC to 125ºC) MIL-STD-202, Method 211, Vibration: MIL-STD-202, Method 201 Terminal Strength Test Condition A MIL-STD-202, Method 103, Test Solderability MIL-STD-202 Method 208 Humidity Condition A: High RH (95%) and Elevated temperature(40ºC) for 240 hours Cap1: Brand logo, current and voltage MIL-STD-202, Method 101, Test Condition Salt Spray ratings B Product Marking Cap2: Series and agency approval marks Dimensions Part Numbering System Measurements displayed in millimeters (inches) 0325xxxx M X P 326 000P Series 325 000P Series (cartridge) (axial leaded) Series 6.35±0.3 6.985±0.3 Amp Code (.25") (.275") Refer to Amp Code column of 31.75±1.12 32.72±1.12 Electrical Characteristics Table (1.25") (1.288") Quantity Code Axial Lead Diameter: Axial Lead Length: M = 1000 0.81±0.05 (.032") for 38.1±3.15 (1.50") TYP. (0.01A - 15A) 52±1(2.0”) for long lead Packaging Code 1.02±0.06 (.040") for X = Filler (20A - 30A) Axial Lead Material: Tin-coated copper Lead-free Packaging Quantity & Packaging Option Packaging Specification Quantity Taping Width Packaging Code 325 Series Bulk N/A 5 VX N/A Bulk N/A 100 HX N/A Bulk N/A 1000 MX N/A Bulk N/A 1000 MX52 (long lead) N/A Bulk N/A 1000 MX52L (long lead) N/A Bulk N/A 1000 MXD N/A Bulk N/A 1000 MXF31 N/A Bulk N/A 1000 MXW N/A 326 Series Bulk N/A 5 VX N/A Bulk N/A 100 HX N/A Bulk N/A 1000 MX N/A Bulk N/A 1000 MXCC N/A Bulk N/A 1000 MXD N/A © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/29/19

Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series Recommended Accessories Max Max Accessory Series Description Application Application Type Voltage Amperage 155100 Twist-Lock In-Line Fuseholder 32 20 342 Traditional Panel Mount Fuseholder 250 20 Holder 346 Panel Mount Flip-Top Shock-Safe Fuseholder 250 15 345 Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount options 250 20 354 Low Profile OMNI-BLOK® Fuse Block 30 Block 600 359 High Current Screw Terminal Fuse Block 30 122 High Current Traditional PC Board Fuse Clip 1000 30 Clip 101 Rivet/Eyelet Type Fuse Clip 1000 15 Notes: 1. Do not use in applications above rating. 2. Please refer to fuseholder data sheet for specific re-rating information. 3. Please contact Littelfuse for applications greater than the max voltage and amperage shown. Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/29/19