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Littelfuse

Littelfuse CCMR-2-1/4 Time-Delay Fuse 2.25A 600VAC Class CC

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PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Technical Specifications

Brand	Littelfuse
Model Number	CCMR-2-1/4
Product Category	Time-Delay Fuse
Series	CCMR
Fuse Class	Class CC
Fuse Type	Dual-Element Time-Delay
Current Rating	2-1/4 A (2.25 A)
AC Voltage Rating	600 VAC
DC Voltage Rating	300 VDC
AC Interrupting Rating	200 kA RMS Symmetrical
DC Interrupting Rating	20 kA
Diameter	10.3 mm
Overall Length	38.1 mm
Approvals	UL Listed, CSA Certified

Key Features

2.25 A Current Rating

The CCMR-2-1/4 has a documented current rating of 2-1/4 ampere, equivalent to 2.25 A.

600 VAC Class CC Fuse

The CCMR-2-1/4 is a Class CC fuse rated for AC circuits up to 600 VAC.

Dual-Element Time-Delay

The CCMR series uses dual-element time-delay construction and is designed for motor and motor branch circuit protection.

300 VDC Rating

The 2.25 A CCMR rating is specified for operation up to 300 VDC.

High Interrupting Capacity

The documented interrupting ratings are 200 kA RMS symmetrical for AC circuits and 20 kA for DC circuits.

Compact Class CC Format

The 0 to 30 A CCMR format measures approximately 10.3 mm in diameter and 38.1 mm in overall length.

Applications

Motor branch circuit protection
Small motor circuit protection
Industrial control circuits
Motor control panels
Contactor protection
Heating circuits
Industrial electrical panels
General industrial circuit protection

Purchase Information

We support online purchase of the Littelfuse CCMR-2-1/4 Time-Delay 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 CCMR-2-1/4?
Littelfuse CCMR-2-1/4 is a CCMR series dual-element time-delay Class CC fuse rated at 2.25 A.

What is the current rating of CCMR-2-1/4?
The documented current rating is 2-1/4 A, equivalent to 2.25 A.

What is the AC voltage rating?
The CCMR-2-1/4 is rated for operation up to 600 VAC.

What is the DC voltage rating?
The 2.25 A CCMR rating is specified for operation up to 300 VDC.

Is CCMR-2-1/4 a time-delay fuse?
Yes. The CCMR series uses dual-element time-delay construction designed to withstand sustained starting currents associated with motors.

What fuse class is CCMR-2-1/4?
The CCMR-2-1/4 is a Class CC fuse.

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 CCMR-2-1/4?
The CCMR 0 to 30 A dimensional format measures approximately 10.3 mm in diameter and 38.1 mm in overall length.

What applications are specified for CCMR fuses?
The CCMR series is used for motor and motor branch circuit protection and is also documented for feeder and branch circuit protection, contactor protection, heating and general industrial protection.

Which fuseholder families can be used with this CCMR rating?
Littelfuse documentation lists L60030C series fuse blocks, LPSC and LFPSC dead-front fuseholders, and 571 and 572 series panel-mount fuseholders for the applicable Class CC current range.

What should be checked before ordering CCMR-2-1/4?
Check the complete CCMR-2-1/4 model designation, 2.25 A current rating, 600 VAC or 300 VDC circuit requirements, Class CC format, interrupting rating, dimensions and fuseholder specifications before purchasing.

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