CLASS CC KLDR SERIES FUSES
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES 600 Vac • 300 Vdc • Time-Delay • 1/10 -30 A
Specifications Voltage Rating Amperage Rating Interrupting Rating Material Fuse Weight Approvals
AC: 600 V DC: 300 V 1/10 – 30 A AC: 200 kA rms symmetrical DC: 20 kA Body: Melamine Caps: Nickel-plated Bronze .019 lb (8.62g) AC: S tandard 248-4, Class CC UL Listed 1/10 -30 A (File: E81895) CSA Certified 1/10 -30 A (File: LR29862) DC: Littelfuse self-certified RoHS Compliant Mexico
Environmental Country of Origin
Description KLDR fuses are time-delay fuses designed to protect control transformers, solenoids and similar inductive components with high magnetizing currents during the first half-cycle. They provide excellent protection of motor branch circuits containing IEC or NEMA rated motor controllers or contactors.
Ordering Information / 1/8 15/100 3/16 2/10 1/4 3/10 4/10 1/2
/ 3/4 8/10 1 1 1/8 1 1/4 1 4/10 1 1/2 1 6/10 6 10
1 10
Features/Benefits • Meets UL and CSA standards • Class CC fuses are the smallest 600 V, 200,000 A.I.R. fuses approved for branch circuit protection • Rejection feature prevents use of fuses with lower interrupting ratings or voltage ratings when used with corresponding fuse holders • Extremely current limiting reduces damage caused by heating and magnetic effects of short-circuit currents
AMPERAGE RATINGS 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 — —
AMPERAGE
PART NUMBER
ORDERING NUMBER
10
KLDR 10
KLDR010.TXP
Web Resources
Applications
For additional informations, visit: littelfuse.com/kldr
• Transformer Protection
Recommended Fuse Holders L60030C Series LPSC Touch-Safe Series
Dimensions Inches (mm) .25
1.50
(6.4)
(38.1)
.41
0-30 A
(10.3)
.50
(12.7)
littelfuse.com
1 of 6
.125 (3.2)
© 2014 Littelfuse POWR-GARD® Products
Rev: 082014
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Electrical Specifications ORDERING NUMBER
AMPERAGE RATING
VOLTAGE RATING AC
DC
INTERRUPTING RATING AC
UPC
DC
WATTS LOSS AT 100% RATED CURRENT (W)
WATTS LOSS AT 80% RATED CURRENT (W)
AGENCY APPROVALS
TOTAL CLEARING I2T (A2 SEC) 200 kA
UL
CSA RoHS
KLDR01.6TXP
1-6/10
600
300
200 kA 20 kA
07945879252
3.56
1.40
10
•
•
•
KLDR004.TXP
4
600
300
200 kA 20 kA
07945879261
1.88
1.10
40
•
•
•
KLDR07.5TXP
7-1/2
600
300
200 kA 20 kA
07945879268
1.68
0.94
1460
•
•
•
KLDR020.TXP
20
600
300
200 kA 20 kA
07945879275
2.30
1.39
1700
•
•
•
KLDR030.TXP
30
600
300
200 kA 20 kA
07945879277
2.75
1.62
1790
•
•
•
Current-Limiting Effects SHORT CIRCUIT CURRENT* 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 50,000 60,000 80,000 100,000 150,000 200,000
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS 4A 349 440 504 554 597 634 668 698 752 799 880 948 1085 1194
6A 420 529 605 666 718 763 803 840 904 961 1058 1139 1304 1436
7.5 A 521 656 751 827 890 946 996 1041 1122 1192 1312 1413 1618 1781
8A 437 551 631 694 748 795 837 875 942 1001 1102 1187 1359 1496
10 A 359 452 517 569 613 651 686 717 772 821 903 973 1114 1226
12 A 369 465 532 585 630 670 705 737 794 844 929 1001 1146 1261
15 A 435 548 627 690 743 790 832 870 937 995 1096 1180 1351 1487
20 A 456 575 658 724 780 829 872 912 983 1044 1149 1238 1417 1560
30 A 621 783 896 986 1063 1129 1189 1243 1339 1423 1566 1687 1931 2125
*Prospective RMS Symmetrical Amperes Short-Circuit Current Note: Data Derived from Peak Let-Thru Curves
PERCENT OF UPRATING
Temperature Derating Curve (Temperature of Air Immediately Surrounding Fuse)
60
40
20
0
0
40
60
-60°C -76°F
littelfuse.com
-40°C -40°F
-20°C -4°F
0°C 32°F
20°C 40°C 60°C 68°F 104°F 140°F AMBIENT TEMPERATURE
2 of 6
80°C 176°F
100°C 212°F
120°C 248°F
PERCENT OF DOWNRATING
20
140°C 284°F
© 2014 Littelfuse POWR-GARD® Products
Rev: 082014
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES
1,000,000
1,000,000
100,000
100,000
PEAK LET- THRU IN AMPERES
PEAK LET- THRU IN AMPERES
Peak Let-Thru Curves
6A 4A -
10,000
1,000
100
8A 10,000
1,000
100
1,000
10,000
100
100,000
100
1,000
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
TEST VOLTAGE:
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
CHICAGO, IL. USA
DRAWING NO.:
PEAK LET-THRU CHARACTERISTIC CURVES
TIME CONSTANT/POWER FACTOR:
DRAWN BY: LLL DATE: 11/12/12 REVISION: C
LITTELFUSE, INC.
1,000,000 SHEET 2 OF 6
CHICAGO, IL. USA
DRAWING NO.:
PEAK LET-THRU CHARACTERISTIC CURVES
FCC05-KLDRP
SHEET 3 OF 6
FCC05-KLDRP
- DATA GENERATED IN EXCEL -
100,000
PEAK LET- THRU IN AMPERES
100,000
PEAK LET- THRU IN AMPERES
FUSE CATALOG NUMBER:
KLDRP 4A - 30A
- DATA GENERATED IN EXCEL -
10A 10,000
1,000
100
100,000
BASIS FOR DATA:
DRAWN BY: LLL DATE: 11/12/12 REVISION: C
LITTELFUSE, INC.
1,000,000
TEST VOLTAGE:
KLDRP 4A - 30A
BASIS FOR DATA:
10,000 AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
15A 12A 10,000
1,000
100
1,000
10,000
100
100,000
100
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
TEST VOLTAGE:
TIME CONSTANT/POWER FACTOR:
littelfuse.com
TEST VOLTAGE:
KLDRP 4A - 30A
LITTELFUSE, INC. CHICAGO, IL. USA
PEAK LET-THRU CHARACTERISTIC CURVES
DRAWN BY: LLL DATE: 11/12/12 REVISION: C DRAWING NO.:
10,000
100,000
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
FUSE CATALOG NUMBER:
BASIS FOR DATA:
1,000
3 of 6
TIME CONSTANT/POWER FACTOR:
KLDRP 4A - 30A
LITTELFUSE, INC.
DRAWN BY: © 2014 Littelfuse POWR-GARD® Products
CHICAGO, IL. USA
SHEET 4 OF 6
FCC05-KLDRP
FUSE CATALOG NUMBER:
BASIS FOR DATA:
PEAK LET-THRU CHARACTERISTIC CURVES
LLL
DATE: REVISION:
11/12/12 C
DRAWING NO.:
Rev: 082014 SHEET 5 OF 6
FCC05-KLDRP
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Peak Let-Thru Curves 1,000,000
PEAK LET- THRU IN AMPERES
100,000
30A 20A 10,000
1,000
100
100
1,000
10,000
100,000
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
FUSE CATALOG NUMBER:
KLDRP 4A - 30A
Time Current Curves BASIS FOR DATA:
DRAWN BY: LLL DATE: 11/12/12 REVISION: C
LITTELFUSE, INC. CHICAGO, IL. USA
1000 900 800 700 600 500 400 300
- 3/10A
200
200
- 4/10A
- 2/10A
- 1/2A
- 1/4A
100 90 80 70 60 50
40
40
40
40
30
30
30
30
20
20
20
20
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
4
4
4
4
3
3
3
3
2
2
2
2
TIME IN SECONDS
100 90 80 70 60 50
100 90 80 70 60 50
TIME IN SECONDS
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
200
30
300
20
400
300
10 9 8 7 6 5
200
400
4
- 3/16A
3
- 15/100A
2
- 1/8A
300
1000 900 800 700 600 500
1 0.9 0.8 0.7 0.6 0.5
400
1000 900 800 700 600 500
0.4
- 1/10A
0.3
- DATA GENERATED IN EXCEL -
0.1
FCC05-KLDRP
0.2
SHEET 6 OF 6
1000 900 800 700 600 500
400
300
200
40
100 90 80 70 60 50
DRAWING NO.:
30
20
1000 900 800 700 600 500
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
PEAK LET-THRU CHARACTERISTIC CURVES
100 90 80 70 60 50
- 6/10A - 3/4A - 8/10A
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.04
0.04
0.03
0.03
0.03
0.03
0.02
0.02
0.02
0.02
0.01
0.01
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
TIME CURRENT CHARACTERISTIC CURVES
10 9 8 7 6 5
CHICAGO, IL. USA
4
CURRENT IN AMPERES FUSE CATALOG NUMBER:
TEST VOLTAGE:
KLDRP 1/10A - 30A
LITTELFUSE, INC.
3
littelfuse.com
2
TIME CONSTANT/POWER FACTOR:
BASIS FOR DATA:
1 0.9 0.8 0.7 0.6 0.5
TEST VOLTAGE:
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
4 of 6
DRAWN BY: LLL DATE: 11/12/12 REVISION: B DRAWING NO.:
TIME CONSTANT/POWER FACTOR:
KLDRP 1/10A - 30A
LITTELFUSE, INC.
DRAWN BY: © 2014 Littelfuse POWR-GARD® Products
CHICAGO, IL. USA
SHEET
FCC01-KLDRP
2 OF 11
FUSE CATALOG NUMBER:
BASIS FOR DATA:
TIME CURRENT CHARACTERISTIC CURVES
LLL
DATE: REVISION:
DRAWING NO.:
Rev: 082014
11/12/12 B
SHEET
FCC01-KLDRP
3 OF 11
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Time Current Curves 1000 900 800 700 600 500
1000 900 800 700 600 500
400
400
400
400
300
300
300
300
200
200
200
200
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
40
40
- 1-1/2A
100 90 80 70 60 50
30
30
- 1-6/10A
20
20
40
- 1A
30
- 1-1/8A - 1-1/4A
TIME IN SECONDS
- 1-4/10A
10 9 8 7 6 5
10 9 8 7 6 5
4
4
3
3
2
2
TIME IN SECONDS
1000 900 800 700 600 500
20
40 30
- 1-8/10A
20
- 2A - 2-1/4A
10 9 8 7 6 5
10 9 8 7 6 5
4
4
3
3
2
2
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.04
0.04
0.03
0.03
0.03
0.03
0.02
0.02
0.02
0.02
0.01
0.01
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
CURRENT IN AMPERES FUSE CATALOG NUMBER:
TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
KLDRP 1/10A - 30A
BASIS FOR DATA:
CHICAGO, IL. USA
KLDRP 1/10A - 30A DRAWN BY: LLL DATE: 11/12/12 REVISION: B
LITTELFUSE, INC. CHICAGO, IL. USA
4 OF 11
DRAWING NO.:
SHEET
400
300
200
FCC01-KLDRP
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
TIME CURRENT CHARACTERISTIC CURVES
5 OF 11
1000 900 800 700 600 500
SHEET
FCC01-KLDRP
1000 900 800 700 600 500
DRAWING NO.:
FUSE CATALOG NUMBER:
BASIS FOR DATA:
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
LITTELFUSE, INC. TIME CURRENT CHARACTERISTIC CURVES
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
400
400
400
400
300
300
300
300
200
200
200
200
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
40
40
30
30
1000 900 800 700 600 500
- DATA GENERATED IN EXCEL -
40
- 2-1/2A
30
- 2-8/10A
10 9 8 7 6 5
4
4
3
3
TIME IN SECONDS
10 9 8 7 6 5
2
2
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
0.02
0.02
40
- 3A
- 4A
10 9 8 7 6 5
4
3
3
2
2
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
FCC01-KLDRP
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
KLDRP 1/10A - 30A
BASIS FOR DATA:
5 of 6 SHEET 6 OF 11
4
- DATA GENERATED IN EXCEL -
DRAWING NO.:
3
CHICAGO, IL. USA
2
LITTELFUSE, INC.
TIME CURRENT CHARACTERISTIC CURVES
1 0.9 0.8 0.7 0.6 0.5
littelfuse.com
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
0.4
0.3
CURRENT IN AMPERES TEST VOLTAGE:
FUSE CATALOG NUMBER:
KLDRP 1/10A - 30A
BASIS FOR DATA:
10 9 8 7 6 5
4
0.2
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
TIME CONSTANT/POWER FACTOR:
20
- 3-1/2A
CURRENT IN AMPERES TEST VOLTAGE:
30
- 3-2/10A
0.1
0.01
0.01
- DATA GENERATED IN EXCEL -
20
20
20
TIME IN SECONDS
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1 1000 900 800 700 600 500
LITTELFUSE, INC. CHICAGO, IL. USA
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
© 2014 Littelfuse POWR-GARD® Products
TIME CURRENT CHARACTERISTIC CURVES - DATA GENERATED IN EXCEL -
DRAWING NO.:
Rev: 082014
SHEET
FCC01-KLDRP
7 OF 11
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Time Current Curves 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1 1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
400
- 4-1/2A
400
400
400
300
- 5A
300
300
300
200
- 5-6/10A
200
200
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
40
40
40
40
30
30
30
30
20
20
20
20
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
4
4
4
4
3
3
3
3
2
2
2
2
200
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
TIME IN SECONDS
TIME IN SECONDS
- 6A
0.02
0.02
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
9 OF 11
400
300
200
100 90 80 70 60 50
40
1000 900 800 700 600 500
SHEET
FCC01-KLDRP
1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
400
400
300
300
- 20A
300
200
200
- 25A
200
- DATA GENERATED IN EXCEL -
400
- 12A
- 30A
- 15A
100 90 80 70 60 50
100 90 80 70 60 50
40
40
40
40
30
30
30
30
20
20
20
20
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
4
4
4
4
3
3
3
3
2
2
2
2
TIME IN SECONDS
100 90 80 70 60 50
100 90 80 70 60 50
TIME IN SECONDS
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
DRAWING NO.: 30
20
10 9 8 7 6 5
4
3
2
200
1 0.9 0.8 0.7 0.6 0.5
- 10A
0.4
- 8A
300
0.3
400
0.1
- DATA GENERATED IN EXCEL -
TIME CURRENT CHARACTERISTIC CURVES 0.2
1000 900 800 700 600 500
400
300
SHEET 8 OF 11
FCC01-KLDRP
40
30
CHICAGO, IL. USA
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
TIME CURRENT CHARACTERISTIC CURVES 0.2
0.1 1000 900 800 700 600 500
KLDRP 1/10A - 30A DRAWN BY: LLL DATE: 11/12/12 REVISION: B
LITTELFUSE, INC.
DRAWN BY: LLL DATE: 11/12/12 REVISION: B DRAWING NO.:
FUSE CATALOG NUMBER:
BASIS FOR DATA:
KLDRP 1/10A - 30A
CHICAGO, IL. USA
TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
FUSE CATALOG NUMBER:
LITTELFUSE, INC.
20
TIME CONSTANT/POWER FACTOR:
BASIS FOR DATA:
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
CURRENT IN AMPERES TEST VOLTAGE:
100 90 80 70 60 50
- 7.5A
1 0.9 0.8 0.7 0.6 0.5
0.01
0.01
- 6-1/4A
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.04
0.04
0.03
0.03
0.03
0.03
0.02
0.02
0.02
0.02
0.01
0.01
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
- DATA GENERATED IN EXCEL -
20
CHICAGO, IL. USA
10 9 8 7 6 5
LITTELFUSE, INC.
4
CURRENT IN AMPERES FUSE CATALOG NUMBER:
TEST VOLTAGE:
KLDRP 1/10A - 30A
TIME CURRENT CHARACTERISTIC CURVES
3
littelfuse.com
2
TIME CONSTANT/POWER FACTOR:
BASIS FOR DATA:
1 0.9 0.8 0.7 0.6 0.5
TEST VOLTAGE:
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
DRAWN BY: LLL DATE: 11/12/12 REVISION: B DRAWING NO.:
SHEET
FCC01-KLDRP
TIME CONSTANT/POWER FACTOR:
10 OF 11
6 of 6
FUSE CATALOG NUMBER:
KLDRP 1/10A - 30A
BASIS FOR DATA:
LITTELFUSE, INC. CHICAGO, IL. USA
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
© 2014 Littelfuse POWR-GARD® Products
TIME CURRENT CHARACTERISTIC CURVES
- DATA GENERATED IN EXCEL -
DRAWING NO.:
Rev: 082014
SHEET
FCC01-KLDRP
11 OF 11
CLASS CC KLDR SERIES FUSES 600 Vac • 300 Vdc • Time-Delay • 1/10 -30 A
Specifications Voltage Rating Amperage Rating Interrupting Rating Material Fuse Weight Approvals
AC: 600 V DC: 300 V 1/10 – 30 A AC: 200 kA rms symmetrical DC: 20 kA Body: Melamine Caps: Nickel-plated Bronze .019 lb (8.62g) AC: S tandard 248-4, Class CC UL Listed 1/10 -30 A (File: E81895) CSA Certified 1/10 -30 A (File: LR29862) DC: Littelfuse self-certified RoHS Compliant Mexico
Environmental Country of Origin
Description KLDR fuses are time-delay fuses designed to protect control transformers, solenoids and similar inductive components with high magnetizing currents during the first half-cycle. They provide excellent protection of motor branch circuits containing IEC or NEMA rated motor controllers or contactors.
Ordering Information / 1/8 15/100 3/16 2/10 1/4 3/10 4/10 1/2
/ 3/4 8/10 1 1 1/8 1 1/4 1 4/10 1 1/2 1 6/10 6 10
1 10
Features/Benefits • Meets UL and CSA standards • Class CC fuses are the smallest 600 V, 200,000 A.I.R. fuses approved for branch circuit protection • Rejection feature prevents use of fuses with lower interrupting ratings or voltage ratings when used with corresponding fuse holders • Extremely current limiting reduces damage caused by heating and magnetic effects of short-circuit currents
AMPERAGE RATINGS 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 — —
AMPERAGE
PART NUMBER
ORDERING NUMBER
10
KLDR 10
KLDR010.TXP
Web Resources
Applications
For additional informations, visit: littelfuse.com/kldr
• Transformer Protection
Recommended Fuse Holders L60030C Series LPSC Touch-Safe Series
Dimensions Inches (mm) .25
1.50
(6.4)
(38.1)
.41
0-30 A
(10.3)
.50
(12.7)
littelfuse.com
1 of 6
.125 (3.2)
© 2014 Littelfuse POWR-GARD® Products
Rev: 082014
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Electrical Specifications ORDERING NUMBER
AMPERAGE RATING
VOLTAGE RATING AC
DC
INTERRUPTING RATING AC
UPC
DC
WATTS LOSS AT 100% RATED CURRENT (W)
WATTS LOSS AT 80% RATED CURRENT (W)
AGENCY APPROVALS
TOTAL CLEARING I2T (A2 SEC) 200 kA
UL
CSA RoHS
KLDR01.6TXP
1-6/10
600
300
200 kA 20 kA
07945879252
3.56
1.40
10
•
•
•
KLDR004.TXP
4
600
300
200 kA 20 kA
07945879261
1.88
1.10
40
•
•
•
KLDR07.5TXP
7-1/2
600
300
200 kA 20 kA
07945879268
1.68
0.94
1460
•
•
•
KLDR020.TXP
20
600
300
200 kA 20 kA
07945879275
2.30
1.39
1700
•
•
•
KLDR030.TXP
30
600
300
200 kA 20 kA
07945879277
2.75
1.62
1790
•
•
•
Current-Limiting Effects SHORT CIRCUIT CURRENT* 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 50,000 60,000 80,000 100,000 150,000 200,000
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS 4A 349 440 504 554 597 634 668 698 752 799 880 948 1085 1194
6A 420 529 605 666 718 763 803 840 904 961 1058 1139 1304 1436
7.5 A 521 656 751 827 890 946 996 1041 1122 1192 1312 1413 1618 1781
8A 437 551 631 694 748 795 837 875 942 1001 1102 1187 1359 1496
10 A 359 452 517 569 613 651 686 717 772 821 903 973 1114 1226
12 A 369 465 532 585 630 670 705 737 794 844 929 1001 1146 1261
15 A 435 548 627 690 743 790 832 870 937 995 1096 1180 1351 1487
20 A 456 575 658 724 780 829 872 912 983 1044 1149 1238 1417 1560
30 A 621 783 896 986 1063 1129 1189 1243 1339 1423 1566 1687 1931 2125
*Prospective RMS Symmetrical Amperes Short-Circuit Current Note: Data Derived from Peak Let-Thru Curves
PERCENT OF UPRATING
Temperature Derating Curve (Temperature of Air Immediately Surrounding Fuse)
60
40
20
0
0
40
60
-60°C -76°F
littelfuse.com
-40°C -40°F
-20°C -4°F
0°C 32°F
20°C 40°C 60°C 68°F 104°F 140°F AMBIENT TEMPERATURE
2 of 6
80°C 176°F
100°C 212°F
120°C 248°F
PERCENT OF DOWNRATING
20
140°C 284°F
© 2014 Littelfuse POWR-GARD® Products
Rev: 082014
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES
1,000,000
1,000,000
100,000
100,000
PEAK LET- THRU IN AMPERES
PEAK LET- THRU IN AMPERES
Peak Let-Thru Curves
6A 4A -
10,000
1,000
100
8A 10,000
1,000
100
1,000
10,000
100
100,000
100
1,000
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
TEST VOLTAGE:
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
CHICAGO, IL. USA
DRAWING NO.:
PEAK LET-THRU CHARACTERISTIC CURVES
TIME CONSTANT/POWER FACTOR:
DRAWN BY: LLL DATE: 11/12/12 REVISION: C
LITTELFUSE, INC.
1,000,000 SHEET 2 OF 6
CHICAGO, IL. USA
DRAWING NO.:
PEAK LET-THRU CHARACTERISTIC CURVES
FCC05-KLDRP
SHEET 3 OF 6
FCC05-KLDRP
- DATA GENERATED IN EXCEL -
100,000
PEAK LET- THRU IN AMPERES
100,000
PEAK LET- THRU IN AMPERES
FUSE CATALOG NUMBER:
KLDRP 4A - 30A
- DATA GENERATED IN EXCEL -
10A 10,000
1,000
100
100,000
BASIS FOR DATA:
DRAWN BY: LLL DATE: 11/12/12 REVISION: C
LITTELFUSE, INC.
1,000,000
TEST VOLTAGE:
KLDRP 4A - 30A
BASIS FOR DATA:
10,000 AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
15A 12A 10,000
1,000
100
1,000
10,000
100
100,000
100
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
TEST VOLTAGE:
TIME CONSTANT/POWER FACTOR:
littelfuse.com
TEST VOLTAGE:
KLDRP 4A - 30A
LITTELFUSE, INC. CHICAGO, IL. USA
PEAK LET-THRU CHARACTERISTIC CURVES
DRAWN BY: LLL DATE: 11/12/12 REVISION: C DRAWING NO.:
10,000
100,000
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
FUSE CATALOG NUMBER:
BASIS FOR DATA:
1,000
3 of 6
TIME CONSTANT/POWER FACTOR:
KLDRP 4A - 30A
LITTELFUSE, INC.
DRAWN BY: © 2014 Littelfuse POWR-GARD® Products
CHICAGO, IL. USA
SHEET 4 OF 6
FCC05-KLDRP
FUSE CATALOG NUMBER:
BASIS FOR DATA:
PEAK LET-THRU CHARACTERISTIC CURVES
LLL
DATE: REVISION:
11/12/12 C
DRAWING NO.:
Rev: 082014 SHEET 5 OF 6
FCC05-KLDRP
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Peak Let-Thru Curves 1,000,000
PEAK LET- THRU IN AMPERES
100,000
30A 20A 10,000
1,000
100
100
1,000
10,000
100,000
AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES
TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
FUSE CATALOG NUMBER:
KLDRP 4A - 30A
Time Current Curves BASIS FOR DATA:
DRAWN BY: LLL DATE: 11/12/12 REVISION: C
LITTELFUSE, INC. CHICAGO, IL. USA
1000 900 800 700 600 500 400 300
- 3/10A
200
200
- 4/10A
- 2/10A
- 1/2A
- 1/4A
100 90 80 70 60 50
40
40
40
40
30
30
30
30
20
20
20
20
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
4
4
4
4
3
3
3
3
2
2
2
2
TIME IN SECONDS
100 90 80 70 60 50
100 90 80 70 60 50
TIME IN SECONDS
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
200
30
300
20
400
300
10 9 8 7 6 5
200
400
4
- 3/16A
3
- 15/100A
2
- 1/8A
300
1000 900 800 700 600 500
1 0.9 0.8 0.7 0.6 0.5
400
1000 900 800 700 600 500
0.4
- 1/10A
0.3
- DATA GENERATED IN EXCEL -
0.1
FCC05-KLDRP
0.2
SHEET 6 OF 6
1000 900 800 700 600 500
400
300
200
40
100 90 80 70 60 50
DRAWING NO.:
30
20
1000 900 800 700 600 500
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
PEAK LET-THRU CHARACTERISTIC CURVES
100 90 80 70 60 50
- 6/10A - 3/4A - 8/10A
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.04
0.04
0.03
0.03
0.03
0.03
0.02
0.02
0.02
0.02
0.01
0.01
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
TIME CURRENT CHARACTERISTIC CURVES
10 9 8 7 6 5
CHICAGO, IL. USA
4
CURRENT IN AMPERES FUSE CATALOG NUMBER:
TEST VOLTAGE:
KLDRP 1/10A - 30A
LITTELFUSE, INC.
3
littelfuse.com
2
TIME CONSTANT/POWER FACTOR:
BASIS FOR DATA:
1 0.9 0.8 0.7 0.6 0.5
TEST VOLTAGE:
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
4 of 6
DRAWN BY: LLL DATE: 11/12/12 REVISION: B DRAWING NO.:
TIME CONSTANT/POWER FACTOR:
KLDRP 1/10A - 30A
LITTELFUSE, INC.
DRAWN BY: © 2014 Littelfuse POWR-GARD® Products
CHICAGO, IL. USA
SHEET
FCC01-KLDRP
2 OF 11
FUSE CATALOG NUMBER:
BASIS FOR DATA:
TIME CURRENT CHARACTERISTIC CURVES
LLL
DATE: REVISION:
DRAWING NO.:
Rev: 082014
11/12/12 B
SHEET
FCC01-KLDRP
3 OF 11
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Time Current Curves 1000 900 800 700 600 500
1000 900 800 700 600 500
400
400
400
400
300
300
300
300
200
200
200
200
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
40
40
- 1-1/2A
100 90 80 70 60 50
30
30
- 1-6/10A
20
20
40
- 1A
30
- 1-1/8A - 1-1/4A
TIME IN SECONDS
- 1-4/10A
10 9 8 7 6 5
10 9 8 7 6 5
4
4
3
3
2
2
TIME IN SECONDS
1000 900 800 700 600 500
20
40 30
- 1-8/10A
20
- 2A - 2-1/4A
10 9 8 7 6 5
10 9 8 7 6 5
4
4
3
3
2
2
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.04
0.04
0.03
0.03
0.03
0.03
0.02
0.02
0.02
0.02
0.01
0.01
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
CURRENT IN AMPERES FUSE CATALOG NUMBER:
TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
KLDRP 1/10A - 30A
BASIS FOR DATA:
CHICAGO, IL. USA
KLDRP 1/10A - 30A DRAWN BY: LLL DATE: 11/12/12 REVISION: B
LITTELFUSE, INC. CHICAGO, IL. USA
4 OF 11
DRAWING NO.:
SHEET
400
300
200
FCC01-KLDRP
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
TIME CURRENT CHARACTERISTIC CURVES
5 OF 11
1000 900 800 700 600 500
SHEET
FCC01-KLDRP
1000 900 800 700 600 500
DRAWING NO.:
FUSE CATALOG NUMBER:
BASIS FOR DATA:
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
LITTELFUSE, INC. TIME CURRENT CHARACTERISTIC CURVES
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
400
400
400
400
300
300
300
300
200
200
200
200
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
40
40
30
30
1000 900 800 700 600 500
- DATA GENERATED IN EXCEL -
40
- 2-1/2A
30
- 2-8/10A
10 9 8 7 6 5
4
4
3
3
TIME IN SECONDS
10 9 8 7 6 5
2
2
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
0.02
0.02
40
- 3A
- 4A
10 9 8 7 6 5
4
3
3
2
2
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
FCC01-KLDRP
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
KLDRP 1/10A - 30A
BASIS FOR DATA:
5 of 6 SHEET 6 OF 11
4
- DATA GENERATED IN EXCEL -
DRAWING NO.:
3
CHICAGO, IL. USA
2
LITTELFUSE, INC.
TIME CURRENT CHARACTERISTIC CURVES
1 0.9 0.8 0.7 0.6 0.5
littelfuse.com
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
0.4
0.3
CURRENT IN AMPERES TEST VOLTAGE:
FUSE CATALOG NUMBER:
KLDRP 1/10A - 30A
BASIS FOR DATA:
10 9 8 7 6 5
4
0.2
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
TIME CONSTANT/POWER FACTOR:
20
- 3-1/2A
CURRENT IN AMPERES TEST VOLTAGE:
30
- 3-2/10A
0.1
0.01
0.01
- DATA GENERATED IN EXCEL -
20
20
20
TIME IN SECONDS
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1 1000 900 800 700 600 500
LITTELFUSE, INC. CHICAGO, IL. USA
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
© 2014 Littelfuse POWR-GARD® Products
TIME CURRENT CHARACTERISTIC CURVES - DATA GENERATED IN EXCEL -
DRAWING NO.:
Rev: 082014
SHEET
FCC01-KLDRP
7 OF 11
POWR-GARD® Fuse Datasheet
CLASS CC KLDR SERIES FUSES Time Current Curves 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1 1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
400
- 4-1/2A
400
400
400
300
- 5A
300
300
300
200
- 5-6/10A
200
200
100 90 80 70 60 50
100 90 80 70 60 50
100 90 80 70 60 50
40
40
40
40
30
30
30
30
20
20
20
20
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
4
4
4
4
3
3
3
3
2
2
2
2
200
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
TIME IN SECONDS
TIME IN SECONDS
- 6A
0.02
0.02
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
9 OF 11
400
300
200
100 90 80 70 60 50
40
1000 900 800 700 600 500
SHEET
FCC01-KLDRP
1000 900 800 700 600 500
1000 900 800 700 600 500
1000 900 800 700 600 500
400
400
300
300
- 20A
300
200
200
- 25A
200
- DATA GENERATED IN EXCEL -
400
- 12A
- 30A
- 15A
100 90 80 70 60 50
100 90 80 70 60 50
40
40
40
40
30
30
30
30
20
20
20
20
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
10 9 8 7 6 5
4
4
4
4
3
3
3
3
2
2
2
2
TIME IN SECONDS
100 90 80 70 60 50
100 90 80 70 60 50
TIME IN SECONDS
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
DRAWING NO.: 30
20
10 9 8 7 6 5
4
3
2
200
1 0.9 0.8 0.7 0.6 0.5
- 10A
0.4
- 8A
300
0.3
400
0.1
- DATA GENERATED IN EXCEL -
TIME CURRENT CHARACTERISTIC CURVES 0.2
1000 900 800 700 600 500
400
300
SHEET 8 OF 11
FCC01-KLDRP
40
30
CHICAGO, IL. USA
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
TIME CURRENT CHARACTERISTIC CURVES 0.2
0.1 1000 900 800 700 600 500
KLDRP 1/10A - 30A DRAWN BY: LLL DATE: 11/12/12 REVISION: B
LITTELFUSE, INC.
DRAWN BY: LLL DATE: 11/12/12 REVISION: B DRAWING NO.:
FUSE CATALOG NUMBER:
BASIS FOR DATA:
KLDRP 1/10A - 30A
CHICAGO, IL. USA
TIME CONSTANT/POWER FACTOR:
TEST VOLTAGE:
FUSE CATALOG NUMBER:
LITTELFUSE, INC.
20
TIME CONSTANT/POWER FACTOR:
BASIS FOR DATA:
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
CURRENT IN AMPERES TEST VOLTAGE:
100 90 80 70 60 50
- 7.5A
1 0.9 0.8 0.7 0.6 0.5
0.01
0.01
- 6-1/4A
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
1 0.9 0.8 0.7 0.6 0.5
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.1 0.09 0.08 0.07 0.06 0.05
0.04
0.04
0.04
0.04
0.03
0.03
0.03
0.03
0.02
0.02
0.02
0.02
0.01
0.01
0.01
0.01 1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
- DATA GENERATED IN EXCEL -
20
CHICAGO, IL. USA
10 9 8 7 6 5
LITTELFUSE, INC.
4
CURRENT IN AMPERES FUSE CATALOG NUMBER:
TEST VOLTAGE:
KLDRP 1/10A - 30A
TIME CURRENT CHARACTERISTIC CURVES
3
littelfuse.com
2
TIME CONSTANT/POWER FACTOR:
BASIS FOR DATA:
1 0.9 0.8 0.7 0.6 0.5
TEST VOLTAGE:
0.4
0.3
0.2
0.1
1000 900 800 700 600 500
400
300
200
100 90 80 70 60 50
40
30
20
10 9 8 7 6 5
4
3
2
1 0.9 0.8 0.7 0.6 0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
DRAWN BY: LLL DATE: 11/12/12 REVISION: B DRAWING NO.:
SHEET
FCC01-KLDRP
TIME CONSTANT/POWER FACTOR:
10 OF 11
6 of 6
FUSE CATALOG NUMBER:
KLDRP 1/10A - 30A
BASIS FOR DATA:
LITTELFUSE, INC. CHICAGO, IL. USA
DRAWN BY: LLL DATE: 11/12/12 REVISION: B
© 2014 Littelfuse POWR-GARD® Products
TIME CURRENT CHARACTERISTIC CURVES
- DATA GENERATED IN EXCEL -
DRAWING NO.:
Rev: 082014
SHEET
FCC01-KLDRP
11 OF 11
