Littelfuse.com/SPXI_CN
© 2020 Littelfuse, Inc.
Rev: 060420
1 of 6
POWR-GARD
®
Fuse
SPXI_CN SERIES IN-LINE SOLAR FUSE
1500 V dc • 2.5–32 A
Part Numbering System
Description
The Littelfuse SPXI_CN solar fuse is specifically designed
for the protection of photovoltaic (PV) systems. It integrates
into an in-line assembly within a wire harness and can be
electrically insulted by either overmolding or using heat-
shrink.
Littelfuse offers multiple ampere ratings to match specific
requirements in a variety of applications.
Features/Benefits
Offers higher amperage protection in less space for
increased design flexibility
One-piece cap design, without joints, offers easier wire
crimping and more streamlined molding
No fuse holder required helps save space, time, and
money
50,000 A interrupting rating
Applications
Photovoltaic high-capacity homerun, truck harness, and
wire harness
Specifications
Voltage Rating 1500 V dc
Amperage Rating 2.5, 3.5, 4, 4.5, 5, 6, 8, 10, 12, 15, 20, 25,
30, 32 A
Interrupting Ratings SPXI_CN 2.5–20 A: 30 kA (50 kA self-certified)
SPXI-M_CN 25–32A: 50 kA
Time Constant ≤ 1 ms
Material Body: melamine
Caps: copper alloy (nickel plated)
Approval UL Recognized (File: E339112)
Applicable Standards UL 248-1, 248-19
IEC 60269-6 (electrically only)
Environmental RoHS Compliant
REACH
Country of Origin China
US Patent 9,564,281
Options
Refer to Ordering Part
Number column in Ordering
Information table
SPXI xxx T XCN
Package Quantity
Series
Ampere Code
T = 10
L = 50
Refer to Ampere Code
Column in Ordering
Information Table
Web Resources
Download additional technical information and view the
complete solar portfolio: Littelfuse.com/Solar
SPXI_CN Dimensions mm (in)
2.5–4 A
4.5–20 A
10.31
(0.406)
9.53
(0.375)
110.06
(4.333)
9.53
(0.375)
5.59
(0.220)
10.31
(0.406)
5.59
(0.220)
81.41
(3.205)
3.56
(0.140)
110.06
(4.333)
12.26
(0.483)
9.53
(0.375)
13.72
(0.540)
5.59
(0.220)
12.26
(0.483)
12.26
(0.483)
3.56
(0.140)
3.56
(0.140)
Recommended Crimping Tool
10-12 AWG: T&B Sta-Kon ERG4002
REACH
Littelfuse.com/SPXI_CN
© 2020 Littelfuse, Inc.
Rev: 060420
2 of 6
POWR-GARD
®
Fuse
SPXI_CN SERIES IN-LINE SOLAR FUSE
SPXI-M_CN Dimensions mm (in)
25–32 A
(coming soon)
10.31
(0.406)
9.53
(0.375)
110.06
(4.333)
9.53
(0.375)
5.59
(0.220)
10.31
(0.406)
5.59
(0.220)
81.41
(3.205)
3.56
(0.140)
110.06
(4.333)
12.26
(0.483)
9.53
(0.375)
13.72
(0.540)
5.59
(0.220)
12.26
(0.483)
12.26
(0.483)
3.56
(0.140)
3.56
(0.140)
Ordering Information
SERIES AMPERAGE AMPERE CODE CATALOG NUMBER PACK QUANTITY
ORDERING PART
NUMBER
UPC
SPXI 2.5 02.5 SPXI02.5CN
10 SPXI02.5TXCN
Coming Soon -
Consult Factory
50 SPXI02.5LXCN
SPXI 3.5 03.5 SPXI03.5CN
10 SPXI03.5TXCN
50 SPXI03.5LXCN
SPXI 4 004. SPXI004CN
10 SPXI004.TXCN 07945826551
50 SPXI004.LXCN 07945826562
SPXI 4.5 04.5 SPXI04.5CN
10 SPXI04.5TXCN
Coming Soon -
Consult Factory
50 SPXI04.5LXCN
SPXI 5 005. SPXI005CN
10 SPXI005.TXCN
50 SPXI005.LXCN
SPXI 6 006. SPXI006CN
10 SPXI006.TXCN
07945826554
50 SPXI006.LXCN 07945826565
SPXI 8 008. SPXI008CN
10 SPXI008.TXCN
Coming Soon -
Consult Factory
50 SPXI008.LXCN
SPXI 10 010. SPXI010CN
10 SPXI010.TXCN
50 SPXI010.LXCN
SPXI 12 012. SPXI012CN
10 SPXI012.TXCN
50 SPXI012.LXCN
SPXI 15 015. SPXI015CN
10 SPXI015.TXCN 07945826558
50 SPXI015.LXCN 07945826569
SPXI 20 020. SPXI020CN
10 SPXI020.TXCN 07945826559
50 SPXI020.LXCN 07945826570
SPXI 25 025. SPXI025MCN
10 SPXI025.TXMCN
Coming Soon -
Consult Factory
50 SPXI025.LXMCN
SPXI 30 030. SPXI030MCN
10 SPXI030.TXMCN
50 SPXI030.LXMCN
SPXI 32 032. SPXI032MCN
10 SPXI032.TXMCN
50 SPXI032.LXMCN