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Littelfuse

Littelfuse KLKR-25 Class CC Fuse 25A 600VAC 300VDC Fast-Acting

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PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Technical Specifications

Brand	Littelfuse
Model Number	KLKR-25
Product Category	Class CC Fuse
Series	KLKR
Fuse Type	Fast-Acting Current-Limiting Fuse
Current Rating	25 A
AC Voltage Rating	600 VAC
DC Voltage Rating	300 VDC
Fuse Class	Class CC
AC Interrupting Rating	200 kA RMS Symmetrical
DC Interrupting Rating	20 kA
Dimensions	10.3 × 38.1 mm
UL Standard	UL 248-4
UL Listing	UL Listed, File E81895
CSA Certification	CSA Certified, File LR29862
Environmental Compliance	RoHS Compliant

Key Features

25 A Current Rating

The KLKR-25 has a documented current rating of 25 A within the Littelfuse KLKR Class CC fuse series.

600 VAC and 300 VDC

The KLKR-25 is rated for circuits up to 600 VAC and 300 VDC.

Fast-Acting Response

The KLKR series uses fast-acting characteristics for general-purpose branch circuit protection.

Class CC Construction

The fuse uses the compact Class CC format and is covered by UL 248-4.

Current-Limiting Design

The KLKR series is designed as a highly current-limiting fuse for branch circuit protection.

10.3 × 38.1 mm Size

The KLKR-25 uses a compact cylindrical format measuring approximately 10.3 mm in diameter and 38.1 mm in length.

Applications

General-purpose branch circuit protection
OEM electrical equipment
Industrial control panels
Solid-state device protection
Electronic equipment circuits
Class CC fuse circuits

Purchase Information

We support online purchase of the Littelfuse KLKR-25 Class CC Fuse. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.

Frequently Asked Questions

What is Littelfuse KLKR-25?
Littelfuse KLKR-25 is a 25 A fast-acting Class CC fuse from the KLKR series for general-purpose branch circuit protection.

What is the current rating of KLKR-25?
The documented current rating is 25 A.

What is the AC voltage rating of KLKR-25?
The documented AC voltage rating is 600 VAC.

What is the DC voltage rating of KLKR-25?
The documented DC voltage rating is 300 VDC.

What fuse class is KLKR-25?
The KLKR-25 belongs to the UL Class CC fuse category.

Is KLKR-25 fast-acting?
Yes. Littelfuse specifies the KLKR series as fast-acting fuses.

What is the AC interrupting rating?
The documented AC interrupting rating is 200 kA RMS symmetrical.

What is the DC interrupting rating?
The documented DC interrupting rating is 20 kA.

What are the dimensions of KLKR-25?
The documented Class CC dimensions are approximately 10.3 mm diameter by 38.1 mm length.

What applications are specified for the KLKR series?
Littelfuse specifies the KLKR series for general-purpose branch circuit protection, including OEM equipment and control panels.

Can KLKR-25 be used for electronic equipment protection?
The KLKR series fast-acting response is intended for circuits where solid-state devices and other electronic equipment require fast-acting protection. Circuit ratings and coordination requirements should be verified before use.

What should be checked before ordering KLKR-25?
Check the KLKR-25 model marking, 25 A current rating, required 600 VAC or 300 VDC rating, Class CC requirements, 10.3 × 38.1 mm dimensions and circuit protection requirements before purchasing.

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