POWR-PRO® Fuses
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POWR-PRO® Fuses
www.littelfuse.com © 2005 Littelfuse • POWR-GARD™ Products Catalog
CCMR Series POWR-PRO® Class CC and CD Fuses
600 VAC • Dual-Element, Time-Delay • 2/10 – 60 Amperes
For space saving protection of motor circuits up to 40 HP*, we
recommend Littelfuse POWR-PRO CCMR series fuses. These fuses
are the only true dual-element, time-delay fuses that come in a small
package specifically en gi neered for motor branch circuit pro tec tion.
CCMR series fuses pro vide Type 2 “No Damage” pro tec tion to both
NEMA-rated and the more sensitive IEC (International Electrotechnical
Com mis sion) type motor circuit com po nents.
Rating for rating, CCMR fuses are the most current-limiting fuses
available. They also provide superior short-circuit protection since their
time-delay characteristics permit the use of smaller fuse ratings in motor
circuits than would be possible if using fast-acting fuses. CCMR series
fuses provide superior pro tec tion in a fraction of the space required by
other fuse classes. For example, when 600V three pole, 30 ampere Class
R fuse blocks are replaced by Littelfuse Class CC fuse blocks, mounting
space requirements may be re duced 70% or more. This is especially
im por tant when a panel contains control devices for many motors.
In addition to the UL Listed smaller sizes, Littelfuse CCMR series fuses
are now available in larger sizes — from 35 to 60 amperes! No other
fuse is available with this current carrying capacity in a package
this small. In fact, the 60 ampere CCMR fuse is the smallest 60A
fuse available rated at 600 volts.
Applications
CCMR series fuses are specifically designed to withstand sustained
starting currents of small motors
Provide short-circuit protection for motor branch circuits
Use with IEC- and NEMA-rated motor controllers and contactors
General purpose circuits up to 60 amps
Features/Benefits
• Space savings — No other fuse class approved for branch circuit
protection has a 600 volt rating and 300,000 A.I.R. in such a small
package.
• Extremely current-limiting — Reduces dam age caused by heating
and magnetic effects of short-circuit currents. Stops damaging short-
circuit currents faster than any me chan i cal protective device.
• Excellent time-delay — Eliminates needless down time caused by
power surges or equip ment demands. Permits selection of fuse sizes
closer to actual load conditions, which provides better protection.
• 300kA Interrupting Rating — Littelfuse self-certified to 300,000
am peres as standard. Meets future trend towards higher available
short-circuit currents.
*Consult the Motor Protection Tables in the Fuseology section for specific motor sizing information
Specifications
Voltage Ratings: AC: 600 Volts
DC: 250 Volts (CCMR
2⁄10 — 2A)
(CCMR 41⁄2 — 10A)
(CCMR 35 — 60A)
300 Volts (CCMR 21⁄4 — 4A)
500 Volts (CCMR 12 — 30A)
Interrupting Ratings: AC: 200,000 amperes rms symmetrical
300,000 amperes rms symmetrical
(Littelfuse self-certified)
DC: 20,000 amperes
Ampere Range: 2⁄10 — 60 amperes
Approvals: AC: Standard 248-4, Class CC
UL Listed
2⁄10 – 30 amps (File No: E81895)
Standard 248, Class CD
UL Listed 35 – 60 amps (File No: E81895)
CSA Certified
2⁄10 – 60 amps
(File No: LR29862)
DC: Littelfuse self-certified
Ampere Ratings
2⁄10 123
1⁄261⁄412 35
1⁄411⁄421⁄4471540
3⁄10 14⁄10 21⁄241⁄271⁄2171⁄245
1⁄211⁄228⁄10 582050
6⁄10 16⁄10 35
6⁄10 92560
8⁄10 18⁄10 32⁄10 61030
Example part number (series & amperage): CCMR 40
Recommended Fuse Blocks
LPSC (CCMR 2⁄10 — 30A)
L60030C series (CCMR 2⁄10 — 30A)
L60060C series (CCMR 35 — 60A)
Refer to Blocks & Holders section of this catalog for additional in for ma tion.