Littelfuse LF Series Class T Fuse Blocks User Guide

: August 23, 2024
: Littelfuse

Table of Contents

Littelfuse LF Series Class T Fuse Blocks
Product Usage Instructions
FAQ
Description
Features/Benefits
Specifications
Dimensions mm (inches)
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Littelfuse LF Series Class T Fuse Blocks

Product Usage Instructions

The Littelfuse Class T fuse blocks are designed for efficient and safe electrical circuit protection. They offer a space-saving design, making them suitable for various installation setups.

Space-saving design
Accommodates a wide range of existing mounting box lugs
Mounting flexibility for easier installation
Snap-to-release DIN rail mounts for convenience
Available covers for added protection

FAQ

Q: What is the maximum voltage rating for the Class T fuse blocks?
A: The Class T fuse blocks have a maximum voltage rating of 300 V.
Q: Are the fuse studs made of durable material?
A: Yes, the fuse studs are made of strong material to ensure efficient power transmission and longevity.

Description

The Littelfuse Class T fuse blocks offer many advantages such as space-saving design, mounting flexibility for easier installation, snap-to-release DIN rail mounts and available covers.

Features/Benefits

Space-saving design
Accommodates a wide range of existing mounting configurations
One hand release from DIN rail for 30–60 A fuses
Reinforced fuse clips are standard
Covers available for most amperages to enhance safety
Both hex and slot set screw options are available on 60 A box lugs

Specifications

Voltage Ratings: 300 V/600 V
Ampere Ratings: 0–600 A
Leakage Current: <0.6 mA at 600 V
Withstand Rating: 200 kA RMS SYM
Materials:
Base: Thermoplastic
Fuse Clip-plated copper alloy
Box Lug: Aluminum
Fuse Studs: Zinc-plated steel
Pressure Plate: Zinc-plated steel
Screw: Zinc-plated steel
Flammability Rating: UL 94 V-0
Approvals: UL Listed (File: E14721) CSA Certified (File: LR7316)
Environmental RoHS Compliant, Lead (Pb) Free

Recommended Fuses

300 V JLLN
600 V JLL

Web Resources

Sample requests, downloadable CAD drawings, and other technical information:
Littelfuse.com/lft
Littelfuse.com/fuseblocks

Ordering Information (Class T 300 V)

Ordering Information (Class T 600 V)

Covers are sold individually. One cover is needed for each pole.
The wire type for the pressure plate and screw terminal is CU only

Dimensions mm (inches)

300 V 30 A

300 V 60 A

300 V 100 A

300 V 400 A

300 V 600 A

600 V 30 A

600 V 60 A

600 V 100 A

600 V 200 A

600 V 400 A

600 V 600 A

Disclaimer Notice – The 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 the complete Disclaimer Notice at www.littelfuse.com/product- disclaimer.