# Fuse, PCB Leaded, 20 A, 250 V, 324, 125 V, Fast Acting, Axial Leaded

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![Product image](https://novapart.co/image/farnell:1596801/)

**URL**: https://novapart.co/products/0324020.MXP/fuse-pcb-leaded-20-a-250-v-324-125-fast-acting
**SKU**: 0324020.MXP
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || Fuses & Fuse Accessories || Fuses || PCB Fuses
**Price**: €0.6330
**Stock**: 1000+
**Lead Time**: 127 days (indicative)

## Description

Blow Characteristic:Fast Acting; Fuse Current:20A; Voltage Rating VAC:250V; Fuse Size Metric:6.3mm x 32mm; Fuse Size Imperial:1/4" x 1-1/4"; Product Range:324 Series; Breaking Capa

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (23-Jan-2024) |
| Fuse Current | 20A |
| Product Range | 324 |
| Fuse Case Style | Axial Leaded |
| Fuse Size Metric | 6.3mm x 32mm |
| Fuse Size Imperial | 1/4" x 1-1/4" |
| Voltage Rating Vac | 250V |
| Voltage Rating Vdc | 125V |
| Blow Characteristic | Fast Acting |
| Breaking Capacity Current Ac | 1kA |
| Breaking Capacity Current Dc | 10kA |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1596801/)

Axial Lead & Cartridge Fuses **Datasheet** 

**314/324 Series** Lead-free 3AB, Fast-Acting Fuse 

## **RoHS Pb PSE** C1Ok@OG WsO ~~C~~ A 

## **Description** 

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 ■ Conforms to DENAN’s Standard 248-14 Appendix 3 

- Available in cartridge and axial ■ Conforms to EN 60127-1 and lead format and with various EN 60127-7 (15A, 20A only) forming dimensions 

- RoHS compliant and Leadfree 

## **Additional Information** 

- UL Listed and Recognized to UL/CSA/NMX 248-1 and UL/ CSA/NMX 248-14 

## **Applications** 

Used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits. 

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Resources Accessories Samples<br>**----- End of picture text -----**<br>


For recommended fuse accessories for this product series, see ‘Recommended Accessories’ section. 

## **Agency Approvals** 

|**Agency**<br>@®|**Agency File Number**<br>E10480|**Ampere Range**<br>0.375A - 15A|
|---|---|---|
|@.|29862|0.375A - 20A|
|~~cWAdus~~|E10480|20A - 40A|
|**PS**<br>**E**<br>~~cWAdus~~<br>oe|**314 Series:**<br>NBK030805-E10480A<br>NBK030805-E10480C<br>NBK030805-E10480E<br>NBK260106-JP1021A<br>**324 Series:**<br>NBK030805-E10480B<br>NBK030805-E10480D<br>NBK030805-E10480F<br>NBK260106-JP1021B|1A - 3.5A<br>4A - 5A<br>6A - 15A<br>20A - 30A<br>1A - 3.5A<br>4A - 5A<br>6A - 15A<br>20A - 30A|
|[@|SU05001-6003<br>SU05001-6001<br>SU05001-7006<br>SU05001-8002<br>SU05001-8003<br>SU05001-6002|3A<br>4-6A<br>7-10A<br>12-15A<br>20A<br>25-30A|
|(~~G~~|N/A|0.375A - 30A|
|A|J 50440217|15A/20A|



## **Electrical Characteristics for Series** 

|**% of Ampere Rating**<br>100%|**Ampere Rating**<br>0.375 - 40|**Opening Time**<br>4 hours, Minimum|
|---|---|---|
|135%|0.375 - 30|1 hour, Maximum|
|200%|0.375  - 12|15 secs., Maximum|
||15 - 30|30 secs., Maximum|
|250%|40|30 secs., Maximum|



© 2024 Littelfuse, Inc. Specifications are subject to change without notice. Revised: VL 10/29/24 

**1** 

Axial Lead & Cartridge Fuses **Datasheet** 

**314/324 Series** Lead-free 3AB, Fast-Acting Fuse 

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## **Electrical Specification by Item** 

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Ampere  Voltage  Nominal Cold  Agency Approvals<br>Amp Code Rating Rating  InterruptingRating [+] Resistance  Nominal Melting I [2] t (A [2]  sec)*** PSE<br>(A) (V) (Ohms)<br>.375 0.375 250 35 A @ 250 VAC 0.820 0.210 x x - - - x -<br>.500 0.5 250 10 kA @ 125 VAC 0.500 0.639 x x - - - x -<br>.750 0.75 250 10 kA @ 125 VDC 0.250 2.061 x x - - - x -<br>001. 1 250 100 A @ 250 VAC 0.189 0.690 x x - - x x -<br>002. 2 250 10 kA @ 125 VAC 0.0700 5.700 x x - - x x -<br>003. 3 250 10 kA @ 125 VDC 0.0432 14.6 x x x - x x -<br>004. 4 250 0.0470 10.4 x x x - x x -<br>005. 5 250 0.0300 26.0 x x x - x x -<br>006. 6 250 0.0240 45.0 x x x - x x -<br>007. 7 250 0.0187 71.0 x x x - x x -<br>750 A @ 250 VAC<br>008. 8 250 0.0153 105 x x x - x x -<br>010. 10 250 10 kA @ 125 VAC 0.0105 206 x x x - x x -<br>010.* 10 280 10 kA @ 125 VDC 0.0105 206 - - - x - x -<br>012. 12 250 0.00760 570 x x x - x x -<br>015. 15 250 0.00505 292 x x x - x x x [****]<br>015.* 15 280 0.00505 292 - x x -<br>020. 20 250 1000 A @ 250 VAC 0.00355 631 - x x x x x x [****]<br>200 A @ 300 VAC<br>020.* 20 280 10 kA @ 125 VAC 0.00355 631 - - - x - x -<br>10 kA @ 125 VDC<br>025. 25 250 100 A @ 250 VAC 0.00235 1450 - - x x x x -<br>025.** 25 280 1000 A @ 75 VDC 0.00235 1450 - - - x - x -<br>400 A @ 125 VAC<br>030. 30 250 0.00182 2490 - - x x x x -<br>400 A @ 125 VDC<br>040. 40 250 1000 A @ 250 VAC 0.0014 22925 - - - x - x -<br>400 A @ 150 VDC<br>**----- End of picture text -----**<br>


- 350A@280VAC interrupting rating available for 10A, 15A and 20A. 

- ** 50A@280VAC for 25A. Add suffix ’280’. Example: 0324020.MX280P. 

## **Average Time Current Curves** 

- ***I2t test at 10x rated current 

****Interrupting rating is 750A@250Vac for 15A,1000A@250Vac for 20A + - Interrupting Rating may differ based on Agency Approval.  See Agency Approval certificate for more details. 

## **Temperature Re-rating Curve** 

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140<br>120<br>100<br>80<br>60<br>25°C<br>40<br>20<br>-60°C -40°C -20°C -0°C -20°C 40°C 60°C 80°C 100°C 120°C<br>-76°F -40°F -4°F -32°F -68°F 104°F 140°F 176°F 212°F 248°F<br>Ambient Temperature<br>Percent of Rating<br>**----- End of picture text -----**<br>


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

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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>.375A .500A .750A 1A 2A 3A 4A 5A 6A 7A 8A 10A 12A 15A 20A25A 30A 40A<br>Time in Seconds<br>**----- End of picture text -----**<br>


© 2024 Littelfuse, Inc. Specifications are subject to change without notice. Revised: VL 10/29/24 

**2** 

Axial Lead & Cartridge Fuses **Datasheet** 

**314/324 Series** Lead-free 3AB, Fast-Acting Fuse 

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## **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>


## **Recommended Process Parameters:** 

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Wave Parameter Lead-Free Recommendation<br>Preheat:<br>(Depends on Flux Activation  (Typical Industry Recommendation)<br>Temperature)<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>**----- 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. 

## **Product Characteristics** 

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

## **Dimensions** 

|**acteristics**||
|---|---|
|**Operating Temperature**|–55ºC to +125ºC|
|**Thermal Shock**|MIL-STD-202, Method 107,  Test Condition<br>B (5 cycles,-65°C to +125°C)|
|**Vibration**|<br>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 Condition<br>B|



## **Part Numbering System** 

## **0314 xxxx M X P** 

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314 000P Series 324 000P Series<br>(cartridge) (axial leaded)<br>6.35±0.3  6.985±0.3<br>(.25") (.275")<br>31.75±1.12 32.72±1.12<br>(1.25") (1.288")<br>Axial Lead Diameter: Axial Lead Length:<br>0.81±0.05 (.032") for 38.1±3.15 (1.50") TYP.<br>(0.375A - 15A) 52±3 (2.0") for Long Lead<br>1.02±0.06 (.040") for<br>(20A - 40A) Axial Lead Material:<br>Tin-coated copper<br>**----- End of picture text -----**<br>


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Series<br>314 = Cartridge<br>324 = Axial Leaded<br>Amp Code<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>


Measurements displayed in millimeters (inches) 

© 2024 Littelfuse, Inc. Specifications are subject to change without notice. Revised: VL 10/29/24 

**3** 

Axial Lead & Cartridge Fuses **Datasheet** 

**314/324 Series** Lead-free 3AB, Fast-Acting Fuse 

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## **Packaging** 

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Quantity &<br>Packaging Option Packaging Specification Quantity Taping Width<br> Packaging Code<br>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 (long lead) N/A<br>Bulk N/A 1000 MXCC N/A<br>Bulk N/A 1000 MX52LE (long lead) N/A<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>Bulk N/A 1000 MX52L N/A<br>Bulk N/A 1000 MXF24 N/A<br>**----- End of picture text -----**<br>


## **Recommended Accessories** 

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Accessory Type Series Description Max Application Max Application<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>Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount<br>345 250 20<br>options<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. 

**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 https://www.littelfuse.com/legal/disclaimers/product-disclaimer.aspx. 

© 2024 Littelfuse, Inc. Specifications are subject to change without notice. Revised: VL 10/29/24 

**4** 



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- [Supplier page](https://es.farnell.com/littelfuse/0324020-mxp/cartridge-fuse-fast-acting-20a/dp/1596801)
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