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Rev: 1-C-101718
POWR-GARD® Fuse Datasheet
1 of 4
Specifications
Voltage Rating 1000 Vdc
600 Vac (125-450 A)
Amperage Rating 70, 80, 90, 100, 125, 160, 200,
250, 300, 350, 400, 450
Interrupting Rating AC: 200 kAIC (125-450 A)
DC: 70-200 A: 20 kAIC
250-400 A: 10 kAIC
450 A: 20 kAIC
Time Constant ≤ 1ms
Material Body: Melamine
End Bells: Copper Alloy
Approvals UL 248-19 Listed (File: E339112)
UL 248-8, Class J (125-450 A)
cULus (125-450 A)
IEC 60269-6 (125-450 A)
Environmental RoHS Compliant
Country of Origin Mexico
Description
The SPFJ series is the smallest 1000 Vdc 70-450 A
photovoltaic fuse available in the market. The SPFJ series is
manufactured in Class J case sizes that allows for both fuse
holder and busbar mounting configuration. The SPFJ meets
both UL and IEC requirements.
Features/Benefits
• Meets UL and IEC photovoltaic standards
• Small footprint reduces panel size
• Flexibility of fuse holder or busbar mounting
• Higher amperage solar fuses in standard sizes
• UL Listed branch and feeder circuit rated
• Class J case sizes for the 125-450 A ratings
Applications
• Inverters
• Re-combiner boxes
Recommended Fuse Holder
LFJ1000 Solar Series
Web Resources
Download technical documents: Littelfuse.com/spfj
Dimensions Inches (mm)
A
B
C
F E
D
G
AMPERAGE
DIMENSIONS IN INCHES (MM)
A B C D E F G
70-100 3.02 (76.5) 4.38 (111.3) 5.75 (146.1) 1.5 (38.1) 1.125 (28.3) .335 (8.5) .189 (4.8)
125-200 3.02 (76.5) 4.38 (111.3) 5.75 (146.1) 1.5 (38.1) 1.125 (28.3) .281 (7.1)* .189 (4.8)
250-400 3.37 (85.7) 5.25 (133.4) 7.125 (181.0) 2.0 (50.8) 1.63 (41.3) .406 (10.3) .252 (6.4)
450 3.75 (95.3) 5.98 (152.0) 8.0 (203.2) 2.5 (63.5) 2.0 (50.8) .531 (13.5) .374 (9.5)
* SPFJ XL option = 8.5 mm (UL 248-19 approval only)
SPFJ SERIES SOLAR FUSE
1000 Vdc • 70-450 A
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SERIES AMP PACKAGE
QUANTITY
CATALOG
NUMBER
ORDERING
NUMBER
SPFJ 70 1SPFJ070 SPFJ070.X
SPFJ 200 1SPFJ200 SPFJ200.XXL
Part Numbering System
SPFJ xxx X —
Package Quantity
Series Mounting Options
Amp Code
X = 1
Blank = Std. Class J Dimensions
XL = 8.5mm Slot (125 - 200A Only)
Refer to Amp Code
Column in Electrical
Specifications Table
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Rev: 1-C-101718
POWR-GARD® Fuse Datasheet
2 of 4
Electrical Specifications
SERIES AMPERAGE
RATING AMP CODE CATALOG
NUMBER
ORDERING
NUMBER UPC AGENCY APPROVALS
UL cULus*
SPFJ 70 070 SPFJ070 SPFJ070.X 07945879326 • —
SPFJ 80 080 SPFJ080 SPFJ080.X 07945879327 • —
SPFJ 90 090 SPFJ090 SPFJ090.X 07945879328 • —
SPFJ 100 100 SPFJ100 SPFJ100.X 07945879329 • —
SPFJ 125 125 SPFJ125 SPFJ125.X 07945894924 • •
SPFJ 125 125 SPFJ125L SPFJ125.XXL 07945879546 • —
SPFJ 160 160 SPFJ160 SPFJ160.X 07945894925 • •
SPFJ 160 160 SPFJ160L SPFJ160.XXL 07945879547 • —
SPFJ 200 200 SPFJ200 SPFJ200.X 07945894926 • •
SPFJ 200 200 SPFJ200L SPFJ200.XXL 07945879548 • —
SPFJ 250 250 SPFJ250 SPFJ250.X 07945894927 • •
SPFJ 300 300 SPFJ300 SPFJ300.X 07945894928 • •
SPFJ 350 350 SPFJ350 SPFJ350.X 07945894929 • •
SPFJ 400 400 SPFJ400 SPFJ400.X 07945894930 • •
SPFJ 450 450 SPFJ450 SPFJ450.X 07945894931 • •
*
c
UL
us
approval on Class J fuse
(no CSA PV standard exists)
CATALOG
NUMBER
AMPERAGE
RATING
NOM COLD
RESISTANCE
(mΩ)
MELTING
I2t (10 kA)
(1000 Vdc)
MELTING
I2t (20 kA)
(1000 Vdc)
WATTS LOSS
AT 100% RATED
CURRENT (W)
WATTS LOSS
AT 80% RATED
CURRENT (W)
WATTS LOSS
AT 70% RATED
CURRENT (W)
SPFJ070 70 1.930 —1772.73 12.56 7.17 5.30
SPFJ080 80 1.700 —2345.80 15.32 8.62 6.18
SPFJ090 90 1.436 —383 7.24 14.83 8.31 6.10
SPFJ100 100 1.243 —4 693.13 18.01 9.98 7.19
SPFJ125 125 0.964 6863 5824 23.00 12.60 9.04
SPFJ160 160 0.613 19053 19368 22.77 12.67 9.15
SPFJ200 200 0.460 34053 32502 27.40 15.09 10.87
SPFJ250 250 0.485 31022 N/A 49.17 26.20 20.59
SPFJ300 300 0.367 59201 N/A 52.90 28.32 20.02
SPFJ350 350 0.285 109799 N/A 54.48 29.31 20.99
SPFJ400 400 0.236 198654 N/A 58.40 31.47 22.21
SPFJ450 450 0.187 317627 201877 50.55 28.68 20.79
CATALOG
NUMBER
AMPERAGE
RATING
VOLTAGE
RATING
INTERRUPTING
RATING TOTAL CLEARING
I2T (A2s) 100 kA
(600 Vac)
TOTAL CLEARING
I2T (A2s) 10 kA
(1000 Vdc)
TOTAL CLEARING
I2T (A2s) 20 kA
(1000 Vdc)
AC DC AC DC
SPFJ070 70 —1000 —20 kA — — 5212.93
SPFJ080 80 —1000 —20 kA — — 6971.37
SPFJ090 90 —1000 —20 kA — — 104 87.20
SPFJ100 100 —1000 —20 kA — — 12243.51
SPFJ125 125 600 1000 200 kA 20 kA 24750 17391 23529
SPFJ160 160 600 1000 200 kA 20 kA 60100 38771 47465
SPFJ200 200 600 1000 200 kA 20 kA 108000 66151 79642
SPFJ250 250 600 1000 200 kA 10 kA 85900 55897 —
SPFJ300 300 600 1000 200 kA 10 kA 143000 91129 —
SPFJ350 350 600 1000 200 kA 10 kA 232000 170863 —
SPFJ400 400 600 1000 200 kA 10 kA 400500 287094 —
SPFJ450 450 600 1000 200 kA 20 kA 565333 401687 400916
Ordering Information
SPFJ SERIES SOLAR FUSE
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POWR-GARD® Fuse Datasheet
3 of 4
Recommended Torque Values For Buss Bar Mounting
SPFJ SERIES SOLAR FUSE
Electrical Specification – Agency Requirements
CATALOG
NUMBER AMPERAGE
OPENING TIME (MINUTES)
100% of Amp
Rating per UL
113% of Amp
Rating per IEC
135% of Amp
Rating per UL
145% of Amp
Rating per IEC
200% of Amp
Rating per UL
SPFJ070 70
Temperature
Stabilization
—
120 Max
—8 Max
SPFJ080 80
SPFJ090 90
SPFJ100 100
SPFJ125 125 120 Min 120 Max
10 MaxSPFJ160 160
180 Min 180 Max
SPFJ200 200
SPFJ250 250
12 Max
SPFJ300 300
SPFJ350 350
SPFJ400 400
SPFJ450 450 240 Min 240 Max 14 Max
Temperature Rerating Curve (Temperature of Air Immediately Surrounding Fuse)
PERCENT OF UPRATING
PERCENT OF DOWNRATING
AMBIENT TEMPERATURE
60
40
20
00
20
40
60
-60˚ C -40˚ C -20˚ C 0˚ C 20˚ C 40˚ C 60˚ C 80˚ C 100˚ C 120˚ C 140˚ C
-76˚ F -40˚ F -4˚ F -32˚ F 68˚ F 104˚ F 140˚ F 176˚ F 212˚ F 248˚ F 284˚ F
RECOMMENDED TORQUE VALUES FOR BUSS BAR MOUNTING FUSE
CATALOG NUMBER FUSE TORQUE–METRIC (STANDARD) HARDWARE SIZE–METRIC (STANDARD)*
SPFJ070 7.3 N•m (65 in-lb) 6mm (1/4 -20) / 8mm (5/16 -18)
SPFJ080 7.3 N•m (65 in-lb) 6mm (1/4 -20) / 8mm (5/16 -18)
SPFJ090 7.3 N•m (65 in-lb) 6mm (1/4 -20) / 8mm (5/16 -18)
SPFJ100 7.3 N•m (65 in-lb) 6mm (1/4 -20) / 8mm (5/16 -18)
SPFJ125 7.3 N•m (65 in-lb) 6mm (1/4 -20)†
SPFJ160 7.3 N•m (65 in-lb) 6mm (1/4 -20)†
SPFJ200 7.3 N•m (65 in-lb) 6mm (1/4 -20)†
SPFJ250 19.2 N•m (170 in-lb) 10mm (3/8 -16)
SPFJ300 19.2 N•m (170 in-lb) 10mm (3/8 -16)
SPFJ350 19.2 N•m (170 in-lb) 10mm (3/8 -16)
SPFJ400 19.2 N•m (170 in-lb) 10mm (3/8 -16)
SPFJ450 19.2 N•m (170 in-lb) 12mm (7/16 -14)
* Recommended minimum hardware grade 2 or class 5.8
†
8mm (5/16 -18) for L dimension option
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Rev: 1-C-101718
POWR-GARD® Fuse Datasheet
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TIME IN SECONDS
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Time Current Curve
SPFJ SERIES SOLAR FUSE
100
1000
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1000000
100 1000 10000 100000 1000000
PEAK LET- THRU IN AMPERES
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
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160A
125A
100
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1000000
100 1000 10000 100000 1000000
PEAK LET- THRU IN AMPERES
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
450A
400A
350A
300A
200A
250A
160A
125A
Peak Let-Thru Curve (125-450 A)
*Tested at 600 Vac
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injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any
purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by
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