Littelfuse, Inc.

Electrical Industry Company Profile

Littelfuse, Inc.

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

Product Data

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Part#: LLSRK020ID

FUS 600V T/D CLASS RK1 20A INDICATOR P

Part#: LLSRK050ID

FUS 600V T/D CLASS RK1 50A INDICATOR P

Part#: JLLS080

FUS 600V F/A CLASS T 80A

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Catalogs

INDUSTRIAL CIRCUIT PROTECTION CATALOG

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PROTECTION RELAYS & CONTROLS CATALOG

Videos

Littelfuse, Inc.

Prevent Electrical Shock In Commercial and Industrial Applications

Shock Block stops the problem before it happens by interrupting circuit faults before shock occurs instead of simply mitigating electrical shock.

Shock Block is the most comprehensive UL 943C listed GFCI on the market. Other workaround product combinations are inadequate when it comes to meeting code requirements or, more importantly, protecting human life.

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 Most Compact Arc-Flash Relay for Tight Spaces

The AF0025 Series is a cost-effective arc-flash protection solution for OEM applications. With a depth of only 1.82” (46.23 mm), this compact relay significantly reduces arc-fault damage in AC and DC compartments by detecting the light from an arc-flash and rapidly providing a trip signal.

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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.

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