
POWR-GARD® Fuse Datasheet
SPXN SERIES SOLAR FUSE
1500 Vdc • 200 – 400 A
Description
The Littelfuse SPXN solar array fuse is designed
specifically for 200-400 A 1500 Vdc applications.
Features/Benefits
• NH3L package size
• Designed to meet UL 2579, IEC 60269-6
• 30,000 A interrupting rating
Specifications
Voltage Rating: 150 0 Vdc
Amperage Rating: 200, 250, 300, 315, 350, 400
Max. Interrupting Rating: 30 kA
Time Constant ≤ 1ms
Material: Body: Melamine
Caps: Copper Alloy
Approvals: UL 2579 (pending)
IEC 60269-6 (pending)
Environmental: RoHS Compliant
Reach
Country of Origin: Mexico
Part Numbering System
SPXN xxx X
Applications
• Inverters
• Re-combiner boxes
Web Resources
Download technical documents: littelfuse.com/spxn
Dimensions Inches (mm)
200 – 400 A
1.49
(37.8)
4.65
(118.1)
4.85
(123.2)
4.95
(125.7)
6.72
(170.7)
Series
Amp Code
Column in Ordering
Information Table
SERIES AMP
SPXN 315 1 SPXN315 SPXN315.X
SPXN 400 1 SPXN400 SPXN400.X
(14.7)
8.071
(205.0)
.58
1.61
(40.9)
.703
(17.9)
PACKAGE
QUANTITY
2.880
(73.2)
.53
(13.5)
.48
(12.2)
Package Quantity
X = 1Refer to Amp Code
CATALOG
NUMBER
.24
(6.1)
.79
(20.1)
ORDE RING
NUMBER
SPECIFICATIONS SUBJECT TO CHANGE
littelfuse.com © 2014 Littelfuse POWR-GARD® Products
1 of 3
Rev: 020314

POWR-GARD® Fuse Datasheet
SPXN SERIES SOLAR FUSE
Ordering Information
SERIES AMPERAGE AMP CODE CATALOG NUMBER PACK QUANTITY ORDERING NUMBER UPC
SPXN 200 200 SPXN200 1 SPXN200.X 07945880827
SPXN 250 250 SPXN250 1 SPXN250.X 07945880828
SPXN 300 300 SPXN300 1 SPXN300.X 07945880829
SPXN 315 315 S PXN 315 1 SPX N315.X 07945880830
SPXN 350 350 SPXN350 1 SPXN350.X 07945880831
SPXN 400 400 SPXN400 1 SPXN400.X 07945880832
Electrical Specifications
VOLTAGE
AMPERAGE
200 1500 30 kA 0.482 33.76 18.03 12.86 190791 305267 • • • •
250 1500 30 kA 0.402 42.20 22.54 16.08 297635 476217 • • • •
300 1500 30 kA 0.345 50.64 27.05 19.30 428595 685753 • • • •
315 1500 30 kA 0.329 5 3.17 28.40 20.27 471455 754329 • • • •
350 1500 30 kA 0.300 59.02 31.52 22.50 579890 927825 • • • •
400 1500 30 kA 0.266 67.28 35.93 25.66 759656 1215451 • • • •
*pending
INTERRUPTING
RATING
DC DC
NOM COLD
RESISTANCE
(ohm)
WATTS LOSS
AT 100% RATED
CURRENT (W)
WATTS LOSS
AT 80% RATED
CURRENT (W)
WATTS LOSS
AT 70% RATED
CURRENT (W)
MELTING
2
t (A2s) 15 kA
I
(1500Vdc)
TOTAL CLEARING
I2t (A2s) 15 kA
(1500 Vdc)
AGENCIES
UL* IEC* ROHS REACH
Electrical Specification – Agency Requirements
OPENING TIME (MINUTES)
AMPERAGE
200
250-400 12 Ma x
100% of Amp
Rating per UL
Temperature
Stabilization
113% of Amp
Rating per IEC
180 Min 120 M ax 180 M ax
135% of Amp
Rating per UL
145% of Amp
Rating per IEC
200% of Amp
Rating per UL
10 Max
SPECIFICATIONS SUBJECT TO CHANGE
littelfuse.com © 2014 Littelfuse POWR-GARD® Products
2 of 3
Rev: 020314