Littelfuse, Inc.

Electrical Industry Company Profile

Littelfuse, Inc.

8755 W Higgins Road
Chicago, IL 60631
(800) 832-3273

Product Data

View all 8,311 products in Smart eCat

Part#: FLSR040ID

FUS 600V T/D CLASS RK5 40A INDICATING

Part#: JTD035ID

FUS 600V T/D CLASS J 35A INDICATING

Part#: LLSRK004ID

FUS 600V T/D CLASS RK1 4A INDICATOR P

Click the Smart eCat icon to view all products and access Spec Sheets and other product information.

Catalogs

INDUSTRIAL CIRCUIT PROTECTION CATALOG

Flip pages, play videos right from the page, pull part number info into bid software or create lists, search catalogs by keyword or part number and more.

More Smart eCatalogs

PROTECTION RELAYS & CONTROLS CATALOG

Videos

Littelfuse, Inc.

How to Properly Protect a BESS Power Circuit from Overcurrents

Overcurrents can cause extensive damage in a battery energy storage system as well as costly downtime. That is why circuit protection is imperative. Circuit protection fuses have many advantages including easy installation and replacement, low watt loss and a compact size. But, sizing fuses accurately is challenging. Littelfuse provides the formulas to calculate fuse sizes for maximum protection, reliability and cost-effectiveness.

Littelfuse, Inc.

How to Size a Neutral Grounding Resistor

One of the most critical decision when designing stable and safe electrical systems is system grounding. The key parameter that determines the neutral grounding resistor’s affect on the circuit is the let-through current. This video will focus on how to determine what level of let-through current to specify when designing a resistance-grounded system.

Products

Littelfuse Launches Its Class J Fuse Disconnect Switch to Simplify Operation and Protection

The compact Class J Fuse Disconnect Switch combines a switch and multiple fuses into a single product, offering a simpler way to manually open and close a circuit while safeguarding against overcurrent and short circuits while saving space.

More Products

Press Releases

Littelfuse Launches Its Class J Fuse Disconnect Switch

Product combines switch and fuses to simplify operation and protection while saving space

CHICAGO, October 4, 2023 — Littelfuse, Inc., (NASDAQ: LFUS), a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world, has launched its Class J Fuse Disconnect Switch.

More Press Releases