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Littelfuse

Littelfuse CCMR-1-1/4 Time-Delay Fuse 1.25A 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-1-1/4
Product Category	Time-Delay Fuse
Series	CCMR
Fuse Class	Class CC
Fuse Type	Dual-Element Time-Delay
Current Rating	1-1/4 A (1.25 A)
AC Voltage Rating	600 VAC
DC Voltage Rating	250 VDC
AC Interrupting Rating	200 kA RMS Symmetrical
DC Interrupting Rating	20 kA
Diameter	10.3 mm
Overall Length	38.1 mm
Catalog Number	CCMR1.25
Product Marking	CCMR 1-1/4A
Approvals	UL Listed, CSA Certified

Key Features

1.25 A Current Rating

The CCMR-1-1/4 has a documented current rating of 1-1/4 ampere, equivalent to 1.25 A.

600 VAC Class CC Fuse

The CCMR series is rated for AC circuits up to 600 VAC and uses the Class CC fuse format in this current range.

Dual-Element Time-Delay

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

200 kA AC Interrupting Rating

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

250 VDC Rating

The 1.25 A rating is within the CCMR 2/10 A through 2 A range specified for 250 VDC with a 20 kA DC interrupting rating.

Compact Class CC Format

The CCMR-1-1/4 belongs to the 0 to 30 A dimensional group with a 10.3 mm diameter and 38.1 mm overall length.

Applications

Motor branch circuit protection
Small motor circuit protection
Industrial control circuits
Motor control panels
Machine control equipment
Industrial electrical panels
Automation equipment circuits
Branch circuit overcurrent protection

Purchase Information

We support online purchase of the Littelfuse CCMR-1-1/4 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-1-1/4?
Littelfuse CCMR-1-1/4 is a CCMR series Class CC dual-element time-delay fuse with a 1.25 A current rating.

What is the current rating of CCMR-1-1/4?
The documented current rating is 1-1/4 A, equivalent to 1.25 A.

What is the AC voltage rating?
The CCMR series is rated for operation up to 600 VAC.

What is the DC voltage rating?
The 1.25 A CCMR rating falls within the 2/10 A through 2 A range specified for operation up to 250 VDC.

Is CCMR-1-1/4 a time-delay fuse?
Yes. The CCMR series uses a dual-element time-delay design intended to withstand sustained starting currents of small motors.

What fuse class is CCMR-1-1/4?
The CCMR-1-1/4 is part of the Class CC CCMR fuse range.

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

What is the Littelfuse catalog number for the 1-1/4 A version?
Littelfuse documentation identifies the 1.25 A catalog number as CCMR1.25 with product marking CCMR 1-1/4A.

What applications is the CCMR series designed for?
The CCMR series is specified for motor and motor branch circuit protection and is designed to withstand sustained starting currents associated with small motors.

What should be checked before ordering CCMR-1-1/4?
Check the complete CCMR-1-1/4 model designation, 1.25 A current rating, required AC or DC voltage, Class CC requirements, interrupting rating, dimensions and fuseholder specifications before purchasing.

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