POWR-GARD
®
Fuse Datasheet
SPFI SERIES IN-LINE SOLAR FUSE
1000 Vdc • 2-30 A (Patent Pending)
Specifications
Voltage Rating
Amperage Rating
Interrupting Rating
Time Constant
Material
Approvals
Environmental
1000 Vdc
2, 2.5, 3, 3.5, 4, 5, 6,
8, 10, 12, 15, 20, 25, 30 A
20 kA
≤
1ms
Body: Melamine
Caps: Copper Alloy (Nickel Plated)
UL 2579 Recognized (File: E339112)
RoHS Compliant
REACH
Mexico
Description
The Littelfuse SPFI solar fuse is designed to integrate
into an in-line assembly within a wire harness. The
fuse provides photovoltaic (PV) protection that meets
UL 2579 for photovoltaic applications. The SPFI can be
electrically insulated by either overmolding or using
approved heat-shrink.
Country of Origin
Part Numbering System
SPFI xxx T
Series
Amp Code
Refer to Amp Code
Column in Ordering
Information Table
SERIES
SPFI
SPFI
SPFI
AMP
2
3.5
20
PACKAGE
QUANTITY
10
10
50
Package Quantity
T = 10
L = 50
CATALOG
NUMBER
SPFI002
SPFI03.5
SPFI020
ORDERING
NUMBER
SPFI002.T
SPFI03.5T
SPFI020.L
Features/Benefits
•
•
•
•
UL 2579 Recognized
Meets IEC 60269-6 electrical performance requirements
20,000 A Interrupting Rating
No fuse holder required
Applications
• Photovoltaic wire harness
Web Resources
Downloadable CAD drawings and other technical
information:
littelfuse.com/spfi
Recommended Crimping Tool
T&B Sta-Kon ERG4002 or equivalent
Weidmüller HTN 21 or equivalent
Dimensions mm (in)
12.26
(0.483)
ø 3.56
(0.140)
63.50
(2.50)
5.59
(0.22)
9.53
(0.375)
10.31
(0.406)
littelfuse.com
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© 2015 Littelfuse POWR-GARD
®
Products
Rev: 030915
POWR-GARD
®
Fuse Datasheet
SPFI SERIES IN-LINE SOLAR FUSE
Ordering Information
SERIES
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
SPFI
AMPERAGE
2
2.5
3
3.5
4
5
6
8
10
12
15
20
25
30
AMP CODE
002.
02.5
003.
03.5
004.
005.
006.
008.
010.
012.
015.
020.
025
030
CATALOG NUMBER
SPFI002
SPFI02.5
SPFI003
SPFI03.5
SPFI004
SPFI005
SPFI006
SPFI008
SPFI010
SPFI012
SPFI015
SPFI020
SPFI025
SPFI030
PRODUCT MARKING
SPFI 2A
SPFI 2 1/2A
SPFI 3A
SPFI 3 1/2A
SPFI 4A
SPFI 5A
SPFI 6A
SPFI 8A
SPFI 10A
SPFI 12A
SPFI 15A
SPFI 20A
SPFI 25A
SPFI 30A
PACK QUANTITY
10
50
10
50
10
50
10
50
10
50
10
50
10
50
10
50
10
50
10
50
10
50
10
50
10
50
10
50
ORDERING NUMBER
SPFI002.T
SPFI002.L
SPFI02.5T
SPFI02.5L
SPFI003.T
SPFI003.L
SPFI03.5T
SPFI03.5L
SPFI004.T
SPFI004.L
SPFI005.T
SPFI005.L
SPFI006.T
SPFI006.L
SPFI008.T
SPFI008.L
SPFI010.T
SPFI010.L
SPFI012.T
SPFI012.L
SPFI015.T
SPFI015.L
SPFI020.T
SPFI020.L
SPFI025.T
SPFI025.L
SPFI030.T
SPFI030.L
UPC
07945880898
07945880899
07945882604
07945882605
07945880853
07945880854
07945879544
07945879545
07945880900
07945880901
07945880902
07945880903
07945880855
07945880856
07945880857
07945880858
07945880859
07945880860
07945880861
07945880862
07945880863
07945880864
07945880865
07945880866
07945882668
07945882669
07945882670
07945882671
Electrical Specifications
AMPERAGE
VOLTAGE
DC
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
INTERRUPTING
RATING
AC
–
–
–
–
–
–
–
–
–
–
–
–
–
–
DC
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
20 kA
WIRE RANGE
CU Only
(Solid/Stranded)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
10-12 AWG (6-4 mm
2
)
NOM COLD
RESISTANCE
(ohm)
0.237
0.185
0.11
0.581
0.06127
0.04086
0.0281
0.0178
0.0125
0.00993
0.00799
0.0045
0.00353
0.00284
WATTS LOSS AT 100%
RATED CURRENT (W)
1.59
1.84
1.50
1.17
1.49
1.47
1.35
1.61
1.76
1.97
2.28
2.81
2.98
3.92
WATTS LOSS AT 80%
RATED CURRENT (W)
0.85
1.24
0.82
0.61
0.84
0.86
0.77
0.91
1.00
1.11
1.38
1.57
1.75
2.13
TOTAL
CLEARING I
2
t
(A
2
s) 20 kA
5
7.5
7.9
26
23
43
80
199
401
642
505
1313
2371
2679
2
2.5
3
3.5
4
5
6
8
10
12
15
20
25
30
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© 2015 Littelfuse POWR-GARD
®
Products
Rev: 030915
POWR-GARD
®
Fuse Datasheet
SPFI SERIES IN-LINE SOLAR FUSE
Electrical Specification —
Agency Requirements
AMPERAGE
RATING
OPENING TIME (MINUTES)
100% of
Amp Rating
per UL
Temperature
Stabilization
113% of
Amp Rating
per IEC
60 Min
135% of
Amp Rating
per UL
60 Max
145% of
Amp Rating
per IEC
60 Max
200% of
Amp Rating
per UL
4 Max
Temperature Rerating Curve
PERCENT OF UPRATING
60
(Temperature of Air Immediately Surrounding Fuse)
40
20
2-30
0
0
PERCENT OF DOWNRATING
20
40
60
-60°C
-76°F
-40°C
-40°F
-20°C
-4°F
0°C
32°F
20°C
40°C
60°C
68°F
104°F
140°F
AMBIENT TEMPERATURE
80°C
176°F
100°C
212°F
120°C
248°F
140°C
284°F
Time Current Curve (2-12 A)
1000
900
800
700
600
500
100
90
80
70
60
50
200
300
400
0.1
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
0.2
0.3
0.4
1
0.9
0.8
0.7
0.6
0.5
10
9
8
7
6
5
20
30
40
2
3
4
1000
900
800
700
600
500
400
300
200
Time Current Curve (15-30 A)
1000
900
800
700
600
500
100
90
80
70
60
50
200
300
400
0.1
1000
900
800
700
600
500
400
300
200
0.2
0.3
0.4
1
0.9
0.8
0.7
0.6
0.5
10
9
8
7
6
5
20
30
40
2
3
4
1000
900
800
700
600
500
400
300
200
- 2A
- 2.5A
- 3A
- 3.5A
- 4A
- 5A
- 6A
- 8A
- 10A
- 12A
100
90
80
70
60
50
40
30
20
100
90
80
70
60
50
40
30
20
- 15A
- 20A
- 25A
- 30A
100
90
80
70
60
50
40
30
20
TIME IN SECONDS
4
3
2
TIME IN SECONDS
10
9
8
7
6
5
10
9
8
7
6
5
4
3
2
10
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.1
0.2
0.3
0.4
1
0.9
0.8
0.7
0.6
0.5
10
9
8
7
6
5
20
30
40
100
90
80
70
60
50
200
300
400
1000
900
800
700
600
500
2
3
4
0.01
0.01
0.1
0.2
0.3
0.4
1
0.9
0.8
0.7
0.6
0.5
10
9
8
7
6
5
20
30
40
100
90
80
70
60
50
200
300
400
1000
900
800
700
600
500
2
3
4
0.01
CURRENT IN AMPERES
TEST VOLTAGE:
BASIS FOR DATA:
1000V
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
CURRENT IN AMPERES
TEST VOLTAGE:
BASIS FOR DATA:
1000V
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
SPFI 2A - 30A
SPFI 2A - 30A
LITTELFUSE, INC.
CHICAGO, IL. USA
DRAWN BY:
LLL
DATE:
08/10/2012
REVISION:
C
DRAWING NO.:
LITTELFUSE, INC.
CHICAGO, IL. USA
SHEET 2 OF 2
TIME CURRENT CHARACTERISTIC CURVES
- DATA GENERATED IN EXCEL -
DRAWN BY:
LLL
DATE:
08/10/2012
REVISION:
C
DRAWING NO.:
FCC01-SPFI000
TIME CURRENT CHARACTERISTIC CURVES
- DATA GENERATED IN EXCEL -
FCC01-SPFI000
SHEET 2 OF 2
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© 2015 Littelfuse POWR-GARD
®
Products
Rev: 030915
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