Part Number:
KLDR004.
Technology:
Fuses
Series:
KLDR
KLDR Series - Class CC Time-Delay Fuse For Transformers
KLDR fuses are time-delay fuses specifically designed for the
protection of control transformers, solenoids and similar inductive
components with high magnetizing currents during the first half-
cycle.
They closely match most control power transformer
characteristics, which permits the fuses to be sized in accordance
with the latest revisions of UL 508 (Industrial Control) and UL 845
(Motor Control Centers).
When the time delay of KLDR fuses is adequate to carry motor
starting current, they provide excellent protection of motor branch
circuits containing IEC or NEMA rated motor controllers or
contractors.
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.
Applications:
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. Review the motor protection tables in
PF101 for more information.
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.
2.
3.
Safety:
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.
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
available, less costly equipment.
Axial Lead and Cartridge Fuses
Midget
RoHS
Pb
Class CC*
Fast-Acting & Slo-Blo Type Fuses CCMR Series
®
UL
®
®
Fast-acting KLKR fuses provide fast-acting protection to equipment
containing surge sensitive components. Use KLKR fuses for non-
inductive loads not requiring time delay. 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.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
110%
135%
Ampere
Rating
1/10 –30
1/10 –30
Opening
Time
15 minutes,
Minimum
1 hour,
Maximum
ENVIRONMENTAL SPECS:
only KLKR is RoHS compliant and
lead-free
AXIAL LEAD AND
CARTRIDGE FUSES
AGENCY APPROVALS:
DC ratings are self-certified. KLKR Series:
UL listed Fast-Acting Class CC per UL 248 and CSA Certified. KLDR,
CCMR Series:
UL listed Time-Delay Class CC
per UL 248 and CSA Certified.
*CCMR 35-60A UL Listed Time-Delay Class CD.
AGENCY FILE NUMBERS:
UL E81895, CSA LR 29862.
VOLTAGE RATINGS:
AC:
DC:
600 Volts
250 Volts (CCMR
(CCMR
(CCMR
300 Volts (CCMR
300 Volts (KLDR)
300 Volts (KLKR
)
Catalog
Number
KLKR.100
KLKR.125
–
–
KLKR.200
KLKR.250
KLKR.300
–
KLKR.500
–
KLKR.750
–
KLKR
001.
–
–
–
KLKR
01.5
–
–
KLKR
002.
–
KLKR
02.5
–
KLKR
003.
–
KLKR
03.5
KLKR
004.
–
KLKR
005.
–
KLKR
006.
–
KLKR
007.
–
KLKR
008.
KLKR
009.
KLKR
010.
KLKR
012.
KLKR
015.
–
KLKR
020.
KLKR
025.
KLKR
030.
–
–
–
–
–
11
INTERRUPTING RATING:
AC: 200,000 ampere
DC: 20,000 amperes
2/10 – 2A)
4 1/2 – 10A)
35 – 60A)
2 1/4 – 4A)
ORDERING INFORMATION:
Ampere
Rating
1/10
1/8
15/100
3/16
2/10
1/4
3/10
4/10
1/2
6/10
3/4
8/10
1
1 1/8
1 1/4
1 4/10
1 1/2
1 6/10
1 8/10
2
2 1/4
2 1/2
2 8/10
3
3 2/10
3 1/2
4
4 1/2
5
5 6/10
6
6 1/4
7
7 1/2
8
9
10
12
15
17 1/2
20
25
30
35
40
45
50
60
Catalog
Number
–
–
–
–
CCMR.200
CCMR.250
CCMR.300
–
CCMR.500
CCMR.600
–
CCMR.800
CCMR
001.
–
CCMR
1.25
CCMR
01.4
CCMR
01.5
CCMR
01.6
CCMR
01.8
CCMR
002.
CCMR
2.25
CCMR
02.5
CCMR
02.8
CCMR
003.
CCMR
03.2
CCMR
03.5
CCMR
004.
CCMR
04.5
CCMR
005.
CCMR
05.6
CCMR
006.
CCMR
6.25
CCMR
007.
CCMR
07.5
CCMR
008.
CCMR
009.
CCMR
010.
CCMR
012.
CCMR
015.
CCMR
17.5
CCMR
020.
CCMR
025.
CCMR
030.
CCMR
035.
CCMR
040.
CCMR
045.
CCMR
050.
CCMR
060.
Nominal
Resistance
Cold Ohms
–
–
–
–
68.4
43.3
28.6
–
7.62
8.2
–
4.013
2.59
–
1.687
1.33
1.24
.9894
.7783
.485
.4166
.3375
.2400
.2188
.1855
.1346
.1231
.093
.0704
.0535
.0517
.0464
.0369
.027
.023
.0193
.0133
.0114
.00708
.00495
.00360
.00250
.00240
.00426
.00286
.00246
.00182
.00118
Catalog
Number
KLDR.100
KLDR.125
KLDR.150
KLDR.187
KLDR.200
KLDR.250
KLDR.300
KLDR.400
KLDR.500
KLDR.600
KLDR.750
KLDR.800
KLDR
001.
KLDR
1.12
KLDR
1.25
KLDR
01.4
KLDR
01.5
KLDR
01.6
KLDR
01.8
KLDR
002.
KLDR
2.25
KLDR
02.5
KLDR
02.8
KLDR
003.
KLDR
03.2
KLDR
03.5
KLDR
004.
KLDR
04.5
KLDR
005.
KLDR
05.6
KLDR
006.
KLDR
6.25
KLDR
007.
KLDR
07.5
KLDR
008.
KLDR
009.
KLDR
010.
KLDR
012.
KLDR
015.
KLDR
17.5
KLDR
020.
KLDR
025.
KLDR
030.
–
–
–
–
–
Nominal
Resistance
Cold Ohms
246
134.9
96
66.4
57.8
31.61
25.5
13.6
15.9
9.99
6.08
6.2
4.0
2.94
2.33
1.5
.898
.625
.486
.55
.52
.333
.26
.21
.171
.239
.118
.082
.0399
.0334
.0315
.03
.0253
.0205
.0193
.0155
.0122
.0114
.00708
.00495
.0036
.0025
.0024
–
–
–
–
–
Nominal
Resistance
Cold Ohms
79.33
56.52
–
–
28.21
19.22
15.10
–
6.95
–
3.581
–
.2342
–
–
–
.225
–
–
.135
–
.0906
–
.0776
–
.0562
.0468
–
.0332
–
.0238
–
.0208
–
.0177
.0151
.01325
.00852
.0074
–
.00511
.003775
.002954
–
–
–
–
–
11
AXIAL LEAD AND
CARTRIDGE FUSES
469
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