POWR-GARD® Fuse
SPXI SERIES IN-LINE SOLAR FUSE
1500 V dc • 1–60 A
REACH
Specifications
Voltage Rating
1500 V dc
Amperage Rating
1, 2, 2.25, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 10, 12, 15,
16, 20, 25, 30, 32, 35, 40, 45, 50, 55, 60 A
SPXI 1–20 A and SPXI-B 1–20 A: 30 kA
SPXI 35–50 A and SPXI-B 35–60 A: 50 kA
SPXI-M and SPXI-BM 25–32A: 50 kA
≤ 1ms
Interrupting Ratings
Time Constant
Material
Body: melamine
Caps: copper alloy (nickel plated)
UL Recognized (File: E339112)
TUV (Cert: J 50495785)
UL 248-1, 248-19
Approvals
Description
The Littelfuse SPXI 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
insulated by either overmolding or using heat-shrink.
Applicable Standards
Environmental
IEC 60269-6 (electrically only)
RoHS Compliant
REACH
Littelfuse offers multiple ampere ratings to match specific
requirements in a variety of applications.
Country of Origin
US Patent
Mexico
9,564,281
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
Part Numbering System
SPXI xxx T XB
Series
ꢁꢀ
Options
ꢁꢀ
No fuse holder required helps save space, time, and
Refer to Ordering Number
Column in Ordering
InformationTable
money
50,000 A interrupting rating
Ampere Code
ꢁꢀ
Refer to Ampere Code
Column in Ordering
InformationTable
Applications
Package Quantity
T = 10
L = 50
ꢁꢀ
Photovoltaic high-capacity homerun, trunk harness, and
wire harness
Recommended CrimpingTool
10-12 AWG: T&B Sta-Kon ERG4002
8 AWG: T&B Sta-Kon ERG4
Web Resources
Download additional technical information and view the
complete solar portfolio: Littelfuse.com/SPXI
6 AWG: Burndy MRC840AL
Littelfuse.com/SPXI
© 2023 Littelfuse, Inc.
Rev: 060523
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