Axial Lead & Cartridge Fuses
3AB > Fast-Acting > 314/324 Series
314/324 Series Lead-free 3AB, Fast-Acting Fuse
Description
RoHS
Pb
PS
E
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
Standard 248-14
• Available in cartridge
and axial lead format
and with various forming
dimensions
Ampere Range
• RoHS compliant and
Lead-free
Agency Approvals
Agency
Agency File Number
Applications
Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.
Electrical Characteristics for Series
% of Ampere
Rating
100%
135%
200%
250%
Ampere Rating
0.375 - 40
0.375 - 30
0.375 - 12
15 - 30
40
Opening Time
4 hours, Minimum
1 hour, Maximum
15 secs., Maximum
30 secs., Maximum
30 secs., Maximum
E10480
29862
E10480
314 Series:
NBK030805-E10480A
NBK030805-E10480C
NBK030805-E10480E
NBK260106-JP1021A
324 Series:
NBK030805-E10480B
NBK030805-E10480D
NBK030805-E10480F
NBK260106-JP1021B
SU05001-6003
SU05001-6001
SU05001-7006
SU05001-8002
SU05001-8003
SU05001-6002
N/A
0.375A - 15A
0.375A - 20A
20A - 40A
1A - 3.5A
4A - 5A
6A - 15A
20A - 30A
1A - 3.5A
4A - 5A
6A - 15A
20A - 30A
3A
4-6A
7-10A
12-15A
20A
25-30A
0.375A - 30A
PS
E
Additional Information
Datasheet
314 Series
Resources
314 Series
Samples
314 Series
Accessories
314 & 324 Series
Datasheet
324 Series
Resources
324 Series
Samples
324 Series
For recommended fuse accessories for this product series,
see ‘Recommended
Accessories’
section.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 06/21/18
Axial Lead & Cartridge Fuses
3AB > Fast-Acting > 314/324 Series
Electrical Specification by Item
Amp
Code
Ampere
Rating
(A)
Voltage
Rating
(V)
Interrupting
Rating
Nominal
Cold
Resistance
(Ohms)
0.820
0.500
0.250
0.189
0.0700
0.0432
0.0470
0.0300
0.0240
0.0187
0.0153
0.0105
0.0105
0.00760
0.00505
0.00505
Nominal
Melting
I
2
t (A
2
sec)***
Agency Approvals
PS
E
.375
.500
.750
001.
002.
003.
004.
005.
006.
007
.
008.
010.
010.*
012.
015.
015.*
020.
020.*
025.
025.**
030.
0.375
0.5
0.75
1
2
3
4
5
6
7
8
10
10
12
15
15
20
20
25
25
30
250
250
250
250
250
250
250
250
250
250
250
250
280
250
250
280
250
280
250
280
250
35 A @ 250 VAC
10 kA @ 125 VAC
10 kA @ 125 VDC
100 A @ 250 VAC
10 kA @ 125 VAC
10 kA @ 125 VDC
750 A @ 250 VAC
10 kA @ 125 VAC
10 kA @ 125 VDC
0.210
0.639
2.061
0.690
5.700
14.6
10.4
26.0
45.0
71.0
105
206
206
570
292
292
631
631
1450
1450
2490
22925
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1000 A @ 250 VAC
200 A @ 300 VAC
10 kA @ 125 VAC
10 kA @ 125 VDC
100 A @ 250 VAC
1000 A @ 75 VDC
400 A @ 125 VAC
400 A @ 125 VDC
0.00355
0.00355
0.00235
0.00235
x
x
x
x
x
x
0.00182
1000 A @ 250 VAC
0.0014
040.
40
250
400 A @ 150 VDC
* 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
Temperature Re-rating Curve
Average Time Current Curves
.375A
.500A
.750A
1A
1000
100
TIME IN SECONDS
10
1
Note:
Rerating depicted in this curve is in addition to the standard derating of 25%
for continuous operation.
0.1
0.01
0.1
1
2A
3A
4A
5A
6A
7A
8A
10A
12A
15A
20A
25A
30A
40A
10
100
1000
CURRENT IN AMPERES
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/21/18
Axial Lead & Cartridge Fuses
3AB > Fast-Acting > 314/324 Series
Soldering Parameters - Wave Soldering
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
10
20
30
40
50
60
70
80
90
0
0
Temperature (°C) - Measured on bottom side of board
Recommended Process Parameters:
Wave Parameter
Preheat:
(Depends on Flux Activation Temperature)
(Typical Industry Recommendation)
Lead-Free Recommendation
Temperature Minimum:
Temperature Maximum:
Preheat Time:
Solder Pot Temperature:
Solder Dwell Time:
100
°
C
150
°
C
60-180 seconds
260
°
C Maximum
2-5 seconds
Time (Seconds)
Preheat Time
Dwell Time
Cooling Time
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
Materials
Terminal Strength
Solderability
Body:
Ceramic
Cap:
Nickel–plated Brass
Leads:
Tin–plated Copper
MIL-STD-202, Method 211, Test
Condition A
MIL-STD-202 Method 208
Cap1:
Brand logo, current and voltage
ratings
Cap2:
Series and agency approval
marks
Operating
Temperature
Thermal Shock
Vibration
Humidity
–55ºC to +125ºC
MIL
-STD-202, Method 107 Test Condition
,
B (5 cycles, -65°C to +125°C)
MIL
-STD-202, Method 201
MIL
-STD-202, Method 103, Test
Condition A (High RH (95%) and Elevated
temperature (40°C) for 240 hours)
MIL STD-202, Method 101, Test
-
Condition B
Product Marking
Salt Spray
Dimensions
Measurements displayed in millimeters (inches)
Part Numbering System
314
000P
Series
(cartridge)
6.35±0.3
(.25")
31.75±1.12
(1.25")
324
000P
Series
(axial leaded)
6.985±0.3
(.275")
32.72±1.12
(1.288")
Axial Lead Diameter:
0.81±0.05 (.032") for
(.125A - 15A)
1.02±0.06 (.040") for
(20A - 40A)
Axial Lead Length:
38.1±3.15 (1.50") TYP
.
52±3 (2.0") for Long Lead
Axial Lead Material:
Tin-coated copper
0314 xxxx M X P
Series
314 = Cartridge
324 = Axial Leaded
Refer to Amp Code column of
Electrical Specification Table
M = 1000
X = Filler
Amp Code
Quantity Code
Packaging Code
Lead-free
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/21/18
Axial Lead & Cartridge Fuses
3AB > Fast-Acting > 314/324 Series
Packaging
Packaging
Option
314 Series
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
324 Series
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
Packaging
Specification
Quantity &
Packaging
Code
Quantity
Taping
Width
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
5
100
1000
1000
1000
1000
5
100
1000
1000
1000
1000
VX
HX
MX
MX52L
(long lead)
MXCC
MX52LE
(long lead)
VX
HX
MX
MX280
MX52
(long lead)
MXF24
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Recommended Accessories
Accessory
Type
Series
155100
Holder
342
346
345
Block
Clip
354
359
122
101
Description
Twist-Lock In-Line Fuseholder
Traditional Panel Mount Fuseholder
Panel Mount Flip-Top Shock-Safe Fuseholder
Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount options
Low Profile OMNI-BLOK
®
Fuse Block
High Current Screw Terminal Fuse Block
High Current Traditional PC Board Fuse Clip
Rivet/Eyelet Type Fuse Clip
Max
Application
Voltage
32
250
250
250
600
1000
1000
Max
Application
Amperage
20
20
15
20
30
30
30
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 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:
www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/21/18
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