littelfuse.com

Rev: 030915

1 of 3

SPFI SERIES IN-LINE SOLAR FUSE

1000 Vdc • 2-30 A (Patent Pending)

Specifications

Voltage Rating

1000 Vdc

Amperage Rating

2, 2.5, 3, 3.5, 4, 5, 6,

8, 10, 12, 15, 20, 25, 30 A

Interrupting Rating

20 kA

Time Constant

≤ 1ms

Material

Body: Melamine

Caps: Copper Alloy (Nickel Plated)

Approvals

UL 2579 Recognized (File: E339112)

Environmental

RoHS Compliant

REACH

Country of Origin

Mexico

Part Numbering System

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

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.

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

Dimensions mm (in)

SERIES

AMP

PACKAGE

QUANTITY

CATALOG

NUMBER

ORDERING

NUMBER

SPFI

2

10

SPFI002

SPFI002.T

SPFI

3.5

10

SPFI03.5

SPFI03.5T

SPFI

20

50

SPFI020

SPFI020.L

SPFI xxx T

Package Quantity

Series

Amp Code

T = 10

L = 50

Refer to Amp Code

Column in Ordering

Information Table

63.50

(2.50)

12.26

(0.483)

5.59

(0.22)

10.31

(0.406)

9.53

(0.375)

ø 3.56

(0.140)