Class CC Fuses
ꢀ
600 VAC 1/10 – 60 Amperes
SPECIFICATIONS
Voltage Ratings: AC: 600 Volts
DC: 250 – 500 Volts (CCMR)†
300 Volts (KLDR)
300 Volts (KLKR)
Interrupting Ratings: AC: 200,000 amperes
rms symmetrical
DC: 20,000 amperes
Ampere Range: CCMR:2/10 – 60 amperes
KLDR: 1/10 – 30 amperes
KLKR: 1/10 – 30 amperes
Approvals: AC: Standard 248-4, Class CC
UL Listed 1/10-30 Amps (File No: E81895)
Standard 248, Class CD
UL Listed 35-60 Amps (File No: E71611)
CSA Certified 1/10-60 Amps
(File No: LR29862)
DC: Littelfuse Self-certified
RECOMMENDED FUSE BLOCKS
L60030C series
L60060C series (for CCMR 35–60A)
Refer to Fuse Block section of this catalog for additional
information.
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. 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.
†Refer to the POWR-PRO® section for additional information.
.25"
(6.4 mm)
1.50"
(38.1 mm)
APPLICATIONS
.41"
Three Types of Class CC Fuses, Specifically Designed
to Protect Different Types of Components
1) Motor protection — CCMR series; dual-element, time-
delay fuses specifically designed to protect motor circuits
up to 40 HP**.
0-30A
(10.3 mm)
.125"
(3.2 mm)
.50"
(12.7 mm)
2) Small transformer protection (control power
transformers) — KLDR series, time-delay fuses designed
to withstand the high magnetizing inrush of transformers.
3) 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.
.850 +-.020
35-60A
SAFETY
ꢀ
200,000 A.I.R. — Reliable interruption of all overcurrents up
1.880 REF.
to 200,000 amperes.
ꢀ
Extremely current limiting — Reduces damage caused by
heating and magnetic effects of short-circuit currents . . .
stops damaging short-circuit currents faster than any
mechanical protective device.
SPACE SAVING
ꢀ
Class CC fuses are the smallest 600V, 200,000 A.I.R. fuses
approved for branch circuit protection.
ECONOMICAL
ꢀ
Current limiting design often permits use of readily avail-
able, less costly equipment.
**Consult the Motor Protection Tables in the Fuseology section for
specific motor sizing information
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