littelfuse.com

Rev: 013019

1 of 1

Specifications

Voltage Rating

600 V

Ampere Rating

1 – 400 A

Approvals

UL Recognized E14721

Material

Base: 150 ˚C general purpose phenolic

Terminal: Tin plated aluminum

Flammability Rating UL94 V-0

Web Resources

Download CAD drawings and other technical information:

littelfuse.com/1lfs

Dimensions Inches (mm)

1LFS SERIES HIGH-SPEED FUSE BLOCKS

600 V • 1-400 A

Description

Littelfuse modular style semiconductor fuse blocks

accommodate a wide range of semiconductor fuses.

Blocks are provided in pairs with fuse mounting hardware.

Features/Benefits

• Modular design reduces inventory requirements

• Sold in pairs for convenience

• Constructed of general purpose phenolic (with tin plated

aluminum terminations)

Ordering Information

CATALOG

NUMBER

AMPERE

RATING

WIRE RANGE

WIRE

RATING

APPROVALS

1LFS101

100 A

#2/0 - 14 CU/AL

120 in-lbs

UL Recognized

1LFS102

400 A

250MCM - #6 CU/AL

275 in-lbs

UL Recognized

1LFS101

1LFS102

FUSE SERIES

AMPERE RATINGS

L15S

70-100

L25S

35-100

L50S

35-100

L60S

35-100

KLC

1-100

L50QS

35-100

1LFS101

FUSE SERIES

AMPERE RATINGS

L15S

70-400

L25S

70-200

L50S

125-200

L60S

125-200

L50QS

125-200

JLLS

110-200

1LFS102

Recommended Fuses

Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse

products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.