Low Voltage, Branch Circuit Rated Fuses
Limitron
®
fast-acting fuses
KTN-R (250V) Class RK1
Specifications
Description:
Fast-acting, current-limiting
fuse.
Dimensions:
See page 11 for Class RK1
dimensions.
Construction:
Melamine tube with
silver fuse element.
Ratings:
Volts — 250Vac (or less)
Amps — 1-600A
IR — 200,000A RMS Sym.
Agency Information:
CE, Std. 248-12, Class RK1, UL
Listed, Guide JDDZ, File E54273, CSA Certified, Class
1422-02, File 53787.
Features and Benefits
• Current limitation for non-inductive circuits provides Class
RK1 current-limiting response to maximum ground fault and
short-circuit conditions.
• 200,000A interrupting rating provides high ratings at all
circuit locations.
• Economical solutions for high-fault circuits.
Typical Applications
• Panelboards
Catalog Numbers (Amps)
KTN-R-1
KTN-R-2
KTN-R-3
KTN-R-4
KTN-R-5
KTN-R-6
KTN-R-8
KTN-R-10
KTN-R-12
KTN-R-15
KTN-R-20
KTN-R-25
KTN-R-30
KTN-R-35
KTN-R-40
KTN-R-45
KTN-R-50
KTN-R-60
KTN-R-70
KTN-R-75
KTN-R-80
KTN-R-90
KTN-R-100
KTN-R-110
KTN-R-125
KTN-R-150
KTN-R-175
KTN-R-200
KTN-R-225
KTN-R-250
KTN-R-300
KTN-R-350
KTN-R-400
KTN-R-450
KTN-R-500
KTN-R-600
.01
10,000
1,000
100
40
Time-Current Characteristic Curves—Average Melt
100A
200A
400A
600A
AMPERE
RATING
30A
60A
Low Voltage
Branch
Circuit
Fuses
300
100
10
TIME IN SECONDS
1
.1
RMS SYMMETRICAL CURRENT IN AMPERES
Current Limitation Curves
400,000
B
INSTANTANEOUS PEAK LET-THRU CURRENT IN AMPS
100,000
For superior electrical protection, Cooper Bussmann recommends upgrading
KTN-R fuse applications to Low-Peak LPN-RK fuses See page 16.
Recommended Fuse Holders & Blocks For Class
RK1 250V Fuses
10,000
• See page 9
A
100,000
Data Sheet: 1043 (0-600)
RMS SYMMETRICAL CURRENTS IN AMPERES
A–B=ASYMMETRICAL AVAILABLE PEAK (2.3 X SYMM RMS AMPS)
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
200,000
10,000
1,000
1,000
AMPERE
RATING
600
400
200
100
60
30
27
京公网安备 11010802033920号
EEWORLD
