Low Voltage, Branch Circuit Rated Fuses
Limitron
®
Fast-acting Fuses
Low Voltage
Branch
Circuit
Fuses
KWS-R (600Vac/dc) Class RK1
Specifications
Description:
Fast-acting, current-limiting fuse.
Dimensions:
See page 15 for Class RK1
dimensions.
Ratings:
Volts — 600Vac (or less); 600Vdc (20-600A)
Amps — 1-600A
IR — 200kA RMS Sym. AC
IR — 100kA DC
Agency Information:
CE, Std. 248-12, Class
RK1, UL Listed, Guide JDDZ, File E54273.
Features and Benefits
• Current limitation for non-inductive circuits provides Class
RK1 current-limiting response to maximum ground fault an
short-circuit conditions.
• 200kA interrupting rating provides high ratings at all circuit
locations.
• Economical solutions for applications with high available
short-circuit current.
Typical Applications
• Photovoltaic systems
• Inverters
• Panelboards
Time-Current Characteristic Curves—Average Melt
6
8
10
300
200
100
10
TIME IN SECONDS
1
.1
1
KWS-R-1
KWS-R-2
KWS-R-3
KWS-R-4
KWS-R-5
KWS-R-6
KWS-R-8
KWS-R-10
KWS-R-12
KWS-R-15
KWS-R-20
KWS-R-25
KWS-R-30
KWS-R-35
KWS-R-40
KWS-R-45
KWS-R-50
KWS-R-60
KWS-R-70
KWS-R-80
KWS-R-90
KWS-R-100
KWS-R-125
KWS-R-150
KWS-R-175
KWS-R-200
KWS-R-225
KWS-R-250
KWS-R-300
KWS-R-350
KWS-R-400
KWS-R-500
KWS-R-600
CURRENT IN AMPS
Current Limitation Curves
Recommended Fuse Holders & Blocks For Class RK1 Fuses
• See page 13
Data Sheet: 4204
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
100
300
400
500
600
700
10
200
20
2
Catalog Numbers (Amps)
.01
15
CURRENT IN
AMPS
25
30
1
3
33
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