Axial Lead & Cartridge Fuses
3AB > Slo-Blo
®
Fuse > 325/326 Series
325/326 Series Lead-Free 3AB, Slo-Blo
®
Fuse
Description
RoHS
Pb
PS
E
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
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
E10480
E10480
29862
Cartridge:
NBK 030805-E10480A
NBK 030805-E10480C
NBK 030805-E10480E
NBK 260106-JP1021A
Leaded:
NBK 030805-E10480B
NBK 030805-E10480D
NBK 030805-E10480F
NBK 260106-JP1021B
SU05001-5010
SU05001-5011
SU05001-5012
SU05001-6006
SU05001-6007
T 50239752 01
N/A
* Approved for cartridge version only
0.250A - 10A
12A - 30A
0.250A - 30A
1A-3.2A
4A-5A
6.25A-15A
20A-30A
1A-3.2A
4A-5A
6.25A-15A
20A-30A
7-10A
12A, 15A
20A
2.8A-3.2A
2.5A
*12A/*15A/*20A
0.010A - 30A
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%
Ampere Rating
0.010A – 30A
0.010A – 30A
0.010A – 3.2A
4A – 30A
Opening Time
4 hours, Minimum
1 hour, Maximum
5 sec., Min., 30 sec., Max.
5 sec., Min., 60 sec., Max.
PS
E
Additional Information
Datasheet
325 Series
Resources
325 Series
Samples
325 Series
Accessories
325 Series
Datasheet
326 Series
Resources
326 Series
Samples
326 Series
Accessories
326 Series
For recommended fuse accessories for this product series,
see ‘Recommended
Accessories’
section.
© 2016 Littelfuse, Inc.
Application testing is strongly recommended. Specifications are subject to change without notice.
Revised: 12/16/16
Axial Lead & Cartridge Fuses
3AB > Slo-Blo
®
Fuse > 325/326 Series
Electrical Characteristic Specifications by Item
Amp
Code
.010
.031
.062
.100
.125
.150
.175
.187
.200
.250
.300
.375
.400
.500
.600
.700
.750
.800
001.
01.2
1.25
01.5
01.6
002.
02.5
02.8
003.
03.2
004.
005.
6.25
007
.
008.
010.
012.
012.*
015.
015.*
020.
020.*
025.**
025.
030.
2
Ampere
Rating
(A)
0.01
0.031
0.062
0.1
0.125
0.15
0.175
0.187
0.2
0.25
0.3
0.375
0.4
0.5
0.6
0.7
0.75
0.8
1
1.2
1.25
1.5
1.6
2
2.5
2.8
3
3.2
4
5
6.25
7
8
10
12
12
15
15
20
20
25
25
30
Voltage
Rating
(V)
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
3324.8000
332.5000
91.7000
33.5500
Nominal
Melting
2
t (A
2
sec)
I
0.00013
0.0110
0.0276
0.0870
0.100
0.143
0.350
0.330
0.316
0.804
1.230
1.20
1.33
4.80
3.90
6.42
13.00
8.20
16.3
22.0
40.0
59.7
66.0
118.0
185.0
232.0
200.0
214.0
9.71
25.0
60.4
47
.3
67
.1
137
129
618
245
760
575
2500
4682
1030
1690
Agency Approvals
PS
E
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
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
100A@250Vac
22.4500
15.4500
8.9200
7
.7250
6.7700
4.4300
3.2200
2.1550
1.9350
1.3000
0.9495
0.7215
0.6410
0.5725
0.3890
0.2860
0.2680
0.1975
0.1760
0.1210
0.0835
0.0695
0.0605
100A@250Vac
10KA@125Vac
10KA@125Vdc
100A@250Vac
10KA@125Vac
0.0539
0.0761
0.0522
0.0346
0.0227
0.0193
0.0132
400A@250Vac
10KA@125Vac
10KA@125Vdc
400A@250Vac
10KA@125Vac
600A@125Vdc
1500A@250Vac
400A@250Vac
10KA@125Vac
600A@125Vdc
1500A@250Vac
400A@250Vac
10KA@125Vac
600A@125Vdc
1500A@250Vac
1500A@250Vac
400A@250Vac
10KA@60Vdc
600A@125Vdc
0.0067
0.0011
0.0050
0.0083
0.0034
0.0042
0.0032
0.0024
0.0019
*Higher i t version available. Please add suffix “D” to part numbers. For instance, 0325020.MXDP 0326020.MXDP
,
I
2
t test at 10× rated current.
**Higher I
2
t 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
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/16/16
Axial Lead & Cartridge Fuses
3AB > Slo-Blo
®
Fuse > 325/326 Series
Temperature Re-rating Curve
Average Time Current Curves
1000
100
10
TIME IN SECONDS
1
Note:
Rerating depicted in this curve is in addition to the standard derating of 25%
for continuous operation.
0.1
0.01
0.05
0.1
.375A
.500A
.750A
1.0A
1.5A
2.0A
2.5A
3.0A
3.5A
4.0A
5.0A
6.25A
7.0A
8.0A
10.0A
12.0A
15.0A
20.0A
25.0A
30.0A
1
10
CURRENT IN AMPERES
100
1000
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.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/16/16
Axial Lead & Cartridge Fuses
3AB > Slo-Blo
®
Fuse > 325/326 Series
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:
Product Marking
Cap2:
Brand logo, current and voltage
ratings
Series and agency approval
marks
Operating Temperature
Thermal Shock
Vibration:
Humidity
Salt Spray
–55ºC to +125ºC
MIL
-STD-202, Method 107 Test
,
Condition B:(5 cycles - 65ºC to
125ºC)
MIL
-STD-202, Method 201
MIL
-STD-202, Method 103, Test
Condition A: High RH (95%) and
Elevated temperature(40ºC) for 240
hours
MIL
-STD-202, Method 101, Test
Condition B
Dimensions
Measurements displayed in millimeters (inches)
Part Numbering System
326
000P
Series
(cartridge)
6.35±0.3
(.25")
31.75±1.12
(1.25")
325
000P
Series
(axial leaded)
6.985±0.3
(.275")
32.72±1.12
(1.288")
Axial Lead Diameter:
0.81±0.05 (.032") for
(0.01A - 15A)
1.02±0.06 (.040") for
(20A - 30A)
Axial Lead Length:
38.1±3.15 (1.50") TYP
.
52±1(2.0”) for long lead
Axial Lead Material:
Tin-coated copper
0325 xxxx M X P
Series
Amp Code
Refer to Amp Code column of
Electrical Characteristics Table
Quantity Code
M = 1000
Packaging Code
X = Filler
Lead-free
Packaging
Packaging Option
325 Series
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
326 Series
Bulk
Bulk
Bulk
Bulk
Bulk
Packaging Specification
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Quantity
5
100
1000
1000
1000
1000
1000
1000
5
100
1000
1000
1000
Quantity &
Packaging Code
VX
HX
MX
MX52 (long lead)
MX52L (long lead)
MXD
MXF31
MXW
VX
HX
MX
MXCC
MXD
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
N/A
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/16/16
Axial Lead & Cartridge Fuses
3AB > Slo-Blo
®
Fuse > 325/326 Series
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 Littelfuse for applications greater than the max voltage and amperage shown.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/16/16
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