CCMR20 Littelfuse Inc, CCMR20 Datasheet

CCMR20

Manufacturer Part Number

CCMR20

Description

Fuse; Cylinder; Fast Acting/Slow Blow; 20A; Class CC; Dims 0.41x1.5"; Cartridge; Clip

Manufacturer

Littelfuse Inc

Type

Fast Acting/Slow Blowr

Datasheet

1.CCMR20.pdf (4 pages)

Specifications of CCMR20

Application

To short-circuit protection for motorbranch-circuits

Brand/series

CCMR Series

Class

Class CC

Current Rating

10 A

Current, Rating

20 A

Diameter

0.41 in.

Dimensions

0.41x1.5 "

Fuse Type

Fast Acting

Length

1.5 in.

Mounting Type

Clip

Primary Type

Cylinder

Resistance, Dc

68.4 Ohms

Termination

Cartridge

Voltage, Rating

600/250 VAC/VDC

Lead Free Status / Rohs Status

RoHS Compliant part

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Part Number:

Technology:

Series:

CCMR Series - Class CC Dual Element Time Delay Fuse for

Short-Circuit Protection of Motor Branch-circuits

For space-saving protection of motor circuits up to 40 HP**, we

recommend Littelfuse POWR-PRO? CCMR series fuses.

For example, when 600V three-pole, 30 ampere Class R fuse

blocks are replaced by Littelfuse Class CC fuse blocks, panel-

mounting space is reduced approximately 70%. This is especially

important when a panel contains many fuses to protect multiple

circuit components.

Applications:

Three types of Class CC Fuses, specifically designed to protect

different types of components:

Safety:

Space Saving:

Economical

CCMR

These fuses are the only true dual-element time-delay

CC fuses specifically engineered for motor branch circuit

protection.

They provide Type II protection (no damage) to both

NEMA-rated and the more sensitive IEC (International

Electromechanical Commission) type motor circuit

components.

CCMR series fuses are now available in larger sizes —

from 35 to 60 amperes! No other 600V fuse is available

with this current carrying capacity in a package this small.

Compared to other UL Listed fuses, Class CC fuses are

the most current limiting, rating for rating.

Because they are physically compact, they provide this

superior protection in a fraction of the space required by

other fuse classes.

Motor protection – CCMR series; dual-element, time-

delay fuses specifically designed to protect motor circuits

up to 40 HP**.

Small transformer protection (control power transformers)

– KLDR series, time-delay fuses designed to withstand

the high magnetizing inrush of transformers.

General purpose protection of equipment requiring fast

overload protection – KLKR series, fast-acting fuses used

for protection of equipment containing solid-state devices

or other electronic components requiring fast response

on overloads.

200,000 A.I.R. — Reliable interruption of all overcurrents

up to 200,000 amperes.

Extremely current limiting — Reduces damage caused by

heating and magnetic effects of short-circuit currents…

stops damaging short-circuit faster than any mechanical

protective device.

Class CC fuses are the smallest 600V, 200,000 A.I.R.

fuses approved for branch circuit protection.

Current limiting design often permits use of readily

available, less costly equipment.

Fuses

CCMR020.

Related parts for CCMR20

CCMR20 Summary of contents

Page 1

... CCMR series fuses are now available in larger sizes — from amperes! No other 600V fuse is available with this current carrying capacity in a package this small. Compared to other UL Listed fuses, Class CC fuses are the most current limiting, rating for rating. Because they are physically compact, they provide this superior protection in a fraction of the space required by other fuse classes ...

Page 2

Electrical Characteristics Property Amp Rating (A) Form Factor Fuse Class Opening Characteristic Resistance (Ohms) Voltage Rating (V) Value 20 Class CC Supplemental Slo-Blo® 0.0036 600 ...

Page 3

... CCMR fuses (formerly KLMR) are specifically designed to withstand sustained starting currents of small motors. The CCMR fuses provide short-circuit protection for motor branch-circuits. KLDR fuses are specifically designed to withstand the momentary high magnetizing currents of control transformers, solenoids, and similar inductive loads ...

Page 4

... Axial Lead and Cartridge Fuses Class CC* Pb RoHS Fast-Acting & Slo-Blo 38.1 mm (1.50") 0-30A 12.7 mm (.50") 35-60A 47.8 mm (1.880") Average Time Current Curve (KLDR) 1000 100 10 1 0.1 0. CURRENT IN AMPERES 470 Type Fuses CCMR Series ® Average Time Current Curve (CCMR) 6.4 mm (.25" ...

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