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Littelfuse

Littelfuse CCMR-2-1/2 Time-Delay Fuse 2.5A 600VAC 300VDC Class CC

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PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Technical Specifications

Brand	Littelfuse
Model Number	CCMR-2-1/2
Product Category	Time-Delay Fuse
Series	CCMR
Fuse Class	Class CC
Fuse Type	Dual-Element Time-Delay
Current Rating	2-1/2 A (2.5 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
Compliance	RoHS Compliant

Key Features

2.5 A Current Rating

The CCMR-2-1/2 has a documented current rating of 2-1/2 ampere, equivalent to 2.5 A.

600 VAC Class CC Fuse

The CCMR-2-1/2 is within the CCMR Class CC range and is rated for AC circuits up to 600 VAC.

300 VDC Rating

The CCMR-2-1/2 is rated for DC circuits up to 300 VDC with a documented 20 kA DC interrupting rating.

Dual-Element Time-Delay

The CCMR series uses dual-element time-delay construction designed to withstand sustained starting currents associated with motors.

200 kA AC Interrupting Rating

The documented AC interrupting rating is 200 kA RMS symmetrical, with Littelfuse also specifying a 300 kA self-certified AC interrupting rating for the series.

Compact Class CC Dimensions

The CCMR-2-1/2 uses the 0 to 30 A CCMR format measuring 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-2-1/2 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-2-1/2?
Littelfuse CCMR-2-1/2 is a CCMR series dual-element time-delay Class CC fuse rated at 2.5 A.

What is the current rating of CCMR-2-1/2?
The documented current rating is 2-1/2 A, equivalent to 2.5 A.

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

What is the DC voltage rating?
The CCMR-2-1/2 is rated for operation up to 300 VDC.

Is CCMR-2-1/2 a time-delay fuse?
Yes. The CCMR series uses dual-element time-delay construction designed for motor and motor branch circuit protection.

What fuse class is CCMR-2-1/2?
The CCMR-2-1/2 is a Class CC fuse under UL 248-4.

What is the AC interrupting rating?
The documented AC interrupting rating is 200 kA RMS symmetrical. Littelfuse also specifies a 300 kA self-certified AC interrupting rating for the CCMR series.

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

What are the dimensions of CCMR-2-1/2?
The documented dimensions for the 0 to 30 A CCMR format are approximately 10.3 mm in diameter and 38.1 mm in overall length.

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

Which fuseholder families are listed for this CCMR range?
Littelfuse lists L60030C series fuse blocks, LPSC and LFPSC series dead-front fuseholders, and 571 and 572 series panel-mount fuseholders for the applicable CCMR current range.

What should be checked before ordering CCMR-2-1/2?
Check the complete CCMR-2-1/2 model designation, 2.5 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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