0314003.HXP

CARTRIDGE FUSE, FAST ACTING, 3A, 250V

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: LITTELFUSE
Product type: Cartridge Fuses
Blow Characteristic:Fast Acting; Fuse Current:3A; Voltage Rating VAC:250V; Fuse Size Metric:6.3mm x 32mm; Fuse Size Imperial:1/4" x 1-1/4"; Product Range:314 Ser 26K8510
Fuse Current: 3A
Product Range: 314 Series
Fuse Size Metric: 6.3mm x 32mm
Fuse Size Imperial: 1/4" x 1-1/4"
Voltage Rating VAC: 250V
Blow Characteristic: Fast Acting
Breaking Capacity Current AC: 100A

Delivery and price
Units per pack	5000
Price	0.661 €
Current stock	100+
Lead time	30 days

Datasheet

**Axial Lead & Cartridge Fuses** 3AB > Fast-Acting > 314/324 Series 

## ~~-~~ 314/324 Series Lead-free 3AB, Fa ~~st Acting Fuse~~ 

## **RoHS P** ~~**b**~~ **PSE** ~~(i@COG WCE~~ 

## **Description** [[GEEjcocoLoE~E~—~,EE] 

The 3AB Fast-Acting 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 and with various forming dimensions 

|~~**Agency Approvals**~~<br>**Agency**<br>**Agency File Number**<br>**Ampere Range**<br>E10480<br>0.375A - 15A<br>29862<br>0.375A - 20A<br>E10480<br>15A* - 40A<br>**PS**<br>**E**<br>NBK030805-E10480A/B<br>NBK030805-E10480C/D<br>NBK030805-E10480E/F<br>NBK260106-JP1021A/B<br>1-3.5A<br>4-5A<br>6-15A<br>20-30A<br>SU05001-6003<br>SU05001-6001<br>SU05001-6006<br>SU05001-8002<br>SU05001-8003<br>SU05001-6002<br>3A<br>4-6A<br>7-10A<br>12-15A<br>20A<br>25-30A<br>~~**Electrical Characteristics for Series**~~<br>~~**Applications**~~<br>% of Ampere<br>Rating<br>Ampere Rating<br>Opening Time<br>100%<br>1/8 - 40<br>4 hours,Minimum<br>135%<br>1/8 - 30<br>1 hour,Maximum<br>200%<br>1/8 - 12<br>15 secs.,Maximum<br>15 - 30<br>30 secs.,Maximum<br>250%<br>40<br>30 secs.,Maximum<br>dimensions<br>Used as supplementary protection in appliance or<br>utilization equipment to provide individual protection for<br>components or internal circuits.<br>~~a [EE~~<br>@)<br>~~G~~<br>~~=~~<br>~~_ EE~~<br>~~.~~<br>~~——~~<br>re|
|---|
|N/A<br>0.375A - 30A<br>C~~E~~|



## N/A 0.375A - 30A C ~~E~~ ~~**Electrical Specifcation by Item** a~~ 

|Amp<br>Code<br>Ampere<br>Rating<br>(A)<br>Voltage<br>Rating<br>(V)<br>Interrupting<br>Rating<br>Nominal<br>Cold<br>Resistance<br>(Ohms)<br>Nominal<br>Melting<br>I2t (A2sec)<br>AgencyApprovals<br>**PS**<br>**E**<br>.375<br>0.375<br>250<br>35 A @ 250 VAC<br>10 kA @ 125 VAC<br>10 kA @ 125 VDC<br>0.820<br>0.210<br>x<br>x<br>x<br>.500<br>0.5<br>250<br>0.500<br>0.639<br>x<br>x<br>x<br>.750<br>0.75<br>250<br>0.250<br>2.061<br>x<br>x<br>x<br>001.<br>1<br>250<br>100 A @ 250 VAC<br>10kA@ 125 VAC<br>10kA@ 125 VDC<br>0.189<br>0.690<br>x<br>x<br>x<br>x<br>002.<br>2<br>250<br>0.0700<br>5.700<br>x<br>x<br>x<br>x<br>003.<br>3<br>250<br>0.0432<br>14.6<br>x<br>x<br>x<br>x<br>x<br>004.<br>4<br>250<br>750 A @ 250 VAC<br>10kA@ 125 VAC<br>10kA@ 125 VDC<br>0.0470<br>10.4<br>x<br>x<br>x<br>x<br>x<br>005.<br>5<br>250<br>0.0300<br>26.0<br>x<br>x<br>x<br>x<br>x<br>006.<br>6<br>250<br>0.0240<br>45.0<br>x<br>x<br>x<br>x<br>x<br>007.<br>7<br>250<br>0.0187<br>71.0<br>x<br>x<br>x<br>x<br>x<br>008.<br>8<br>250<br>0.0153<br>105<br>x<br>x<br>x<br>x<br>x<br>010.<br>10<br>250<br>0.0105<br>206<br>x<br>x<br>x<br>x<br>x<br>010.*<br>10<br>280<br>0.0105<br>206<br>x<br>x<br>012.<br>12<br>250<br>0.00760<br>570<br>x<br>x<br>x<br>x<br>x<br>015.<br>15<br>250<br>0.00505<br>292<br>x<br>x<br>x<br>x<br>x<br>015.*<br>15<br>280<br>0.00505<br>292<br>x<br>x<br>020.<br>20<br>250<br>1000 A @ 250 VAC<br>200 A @ 300 VAC<br>10kA@ 125 VAC<br>10kA@ 125 VDC<br>0.00355<br>631<br>x<br>x<br>x<br>x<br>x<br>020.*<br>20<br>280<br>0.00355<br>631<br>x<br>x<br>025.<br>25<br>250<br>100 A @ 250 VAC<br>1000A @ 75 VDC<br>400A @ 125 VAC<br>400 A @ 125 VDC<br>0.00235<br>1450<br>x<br>x<br>x<br>x<br>025.**<br>25<br>280<br>0.00235<br>1450<br>x<br>x<br>030.<br>30<br>250<br>0.00182<br>2490<br>x<br>x<br>x<br>x<br>040.<br>40<br>250<br>1000 A @ 250 VAC<br>400 A @ 150 VDC<br>0.0014<br>22925<br>x<br>x<br>~~Pe~~<br>Gi<br>|Wlic|]e~~E~~<br>~~ee~~<br>~~a~~<br>~~es~~<br>~~es~~<br>~~en~~<br>~~—— ————~~<br>~~Se~~<br>~~a~~<br>~~a~~<br>~~eses~~<br>~~(OD~~<br>~~——~~<br>~~ee ee ee ee ee~~<br>~~——~~<br>~~ee ee ee ee~~<br>~~——~~<br>~~ee ee ee ee ee~~<br>~~——=~~<br>~~—— a~~<br>~~——~~<br>~~——————~~<br>~~—+—~~<br>~~4~~<br>~~4~~<br>~~4 + —~~<br>~~fj~~<br>~~es~~<br>~~es ns ns~~<br>~~ee ee ee~~<br>~~a~~<br>~~ee~~<br>~~es~~<br>~~es~~<br>~~I~~<br>~~ED I~~<br>~~ee~~<br>~~ee~~<br>~~es~~<br>~~ees~~<br>~~eeseseeeses~~|
|---|



- 350A@280VAC interrupting rating available for 10A, 15A and 20A. ** 50A@280VAC for 25A. Add suffix ’280’. Example: 0324020.MX280P. I[2] t test at 10x rated current 

© 2016 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 06/30/16 

**Axial Lead & Cartridge Fuses** 3AB > Fast-Acting > 314/324 Series 

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## ~~**Temperature Re-rating Curve**~~ 

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Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 

## ~~**Soldering Parameters - Wave Soldering**~~ 

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300<br>280<br>260<br>240<br>220<br>200<br>180<br>160<br>140<br>120<br>100<br>80<br>60<br>40<br>20<br>0<br>Time (Seconds)<br>Preheat Time Cooling Time<br>Dwell Time<br>Temperature (°C) - Measured on bottom side of board 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240<br>**----- End of picture text -----**<br>


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Average Time Current Curves<br>**----- End of picture text -----**<br>


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1000<br>100<br>10<br>1<br>0.1<br>0.01<br>0.1 1 10 100 1000<br>CURRENT IN AMPERES<br>Recommended Process Parameters:<br>Wave Parameter Lead-Free Recommendation<br>Preheat:<br>(Depends on Flux Activation Temperature) (Typical Industry Recommendation)<br>    Temperature Minimum: 100°C<br>    Temperature Maximum: 150°C<br>    Preheat Time: 60-180 seconds<br>Solder Pot Temperature: 260°C Maximum<br>Solder Dwell Time: 2-5 seconds<br>.375A .500A .750A 1A 2A 3A4A 5A6A 7A 8A 10A 12A 15A 20A25A 30A40A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


## **Recommended Hand-Solder Parameters:** 

Solder Iron Temperature: 350°C +/- 5°C Heating Time: 5 seconds max. 

## **Note: These devices are not recommended for IR or Convection Reflow process.** 

© 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/30/16 

**Axial Lead & Cartridge Fuses** 3AB > Fast-Acting > 314/324 Series 

|~~**Product Characteristics**~~|~~**Product Characteristics**~~|
|---|---|
|||
|**Materials**|**Body:**Ceramic<br>**Cap:**<br>Nickel–plated Brass|
|**Terminal Strength**|**Leads:**Tin–plated Copper<br>MIL-STD-202, Method 211,  Test<br>Condition A|
|**Solderability**|MIL-STD-202 Method 208|
||**Cap1:**Brand logo, current and voltage|
|**Product Marking**|ratings<br>**Cap2:**Series and agency approval<br>marks|



|**Operating**<br>**Temperature**|–55ºC to +125ºC|
|---|---|
|**Thermal Shock**|MIL-STD-202, Method 107,  Test Condition<br>B (5 cycles, -65°C to +125°C)|
|**Vibration**|MIL-STD-202, Method 201|
|**Humidity**|MIL-STD-202, Method 103,  Test<br>Condition A (High RH (95%) and Elevated<br>temperature (40°C) for 240 hours)|
|**Salt Spray**|MIL- STD-202, Method 101, Test<br>Condition B|



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## ~~**Part Numbering System**~~ 

Measurements displayed in millimeters (inches) 

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0314 xxxx M X P<br>Series<br>Amp Code<br>nn |<br>Refer to Amp Code column of<br>Electrical Specification Table<br>Quantity Code<br>M = 1000<br>Packaging Code<br>X = Filler<br>Lead-free<br>**----- End of picture text -----**<br>


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314  000P  Series 324  000P  Series<br>(cartridge) (axial leaded) Series<br>6.35±0.3  6.985±0.3  Amp Code<br>(.25") 7 _ (.275") Refer to Amp Code column of  nn |<br>31.75±1.12 32.72±1.12 Electrical Specification Table<br>(1.25") (1.288")<br>oth | [FE a e<br>Axial Lead Diameter: Axial Lead Length: Quantity Code<br>0.81±0.05 (.032") for 38.1±3.15 (1.50") TYP. M = 1000<br>(.125A - 15A) 52±3 (2.0") for Long Lead<br>1.02±0.06 (.040") for Packaging Code<br>(20A - 40A) Axial Lead Material:  X = Filler<br>Tin-coated copper<br>Lead-free<br>Packaging Additional Information<br>Lo<br>Quantity &<br>Packaging  Packaging  Taping<br>Option Specification Quantity  Packaging Code Width<br>ae Datasheet Resources Samples<br>314 Series 314 Series 314 Series 314 Series<br>Bulk N/A 5 VX N/A<br>Bulk N/A 100 HX N/A<br>Bulk N/A 1000 MX N/A<br>Bulk N/A 1000 MX52L N/A Datasheet Resources Samples<br>(long lead) 324 Series 324 Series 324 Series<br>Bulk N/A 1000 MXCC N/A<br>MX52LE see ‘Recommended Accessories’ section.Recommended Accessories’ section.’ section.<br>Bulk N/A 1000 N/A<br>= (long lead) "<br>324 Series<br>Bulk N/A 5 VX N/A<br>Bulk N/A 100 HX N/A<br>Bulk N/A 1000 MX N/A<br>Bulk N/A 1000 MX280 N/A<br>MX52<br>Bulk N/A 1000 N/A<br>(long lead)<br>Bulk N/A 1000 MXF24 N/A<br>**----- End of picture text -----**<br>


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Datasheet Resources Samples Accessories<br>314 Series 314 Series 314 Series 314 & 324 Series<br>Datasheet Resources Samples<br>324 Series 324 Series 324 Series<br>For recommended fuse accessories for this product series,<br>see ‘Recommended Accessories’ section.Recommended Accessories’ section.’ section.<br>"<br>**----- End of picture text -----**<br>


© 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/30/16 

**Axial Lead & Cartridge Fuses** 3AB > Very Fast-Acting > 322/332 Series 

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## ~~**Recommended Accessories**~~ 

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Max  Max<br>Accessory<br>Series Description Application  Application<br>Type<br>Voltage Amperage<br>155100 Twist-Lock In-Line Fuseholder 32 20<br>342 Traditional Panel Mount Fuseholder 250 20<br>Holder<br>346 Panel Mount Flip-Top Shock-Safe Fuseholder 250 15<br>345 Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount options 250 20<br>354 Low Profile OMNI-BLOK [®]  Fuse Block 30<br>Block 600<br>359 High Current Screw Terminal Fuse Block  30<br>122 High Current Traditional PC Board Fuse Clip  1000 30<br>Clip<br>101 Rivet/Eyelet Type Fuse Clip 1000 15<br>**----- End of picture text -----**<br>


Notes: 

1. Do not use in applications above rating. 

2. Please refer to fuseholder data sheet for specific re-rating information. 

3. Please contact factory for applications greater than the max voltage and amperage shown. 

© 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/30/16

Updated at June 4, 2026

Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.

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