KWN-R-1 Datasheet, PDF (2/4 Pages) Cooper Bussmann, Inc. – 250V KWN-R and 600V KWS-R Class RK1 fuses

Technical Data 10413
Effective August 2015
250V KWN-R and 600V KWS-R Class RK1 fuses
Features:
• High DC voltage ratings for critical industrial or commercial
applications that have specific current limitation requirements.
• 10X better current limitation than basic circuit breakers and non-
current limiting fuses helps prevent damage caused by short-
circuit events
• 200kA AC Interrupting ratings comply with NEC^® Section 110.9
for today’s large capacity systems
• 20kA DC interrupting ratings help meet the needs of protecting
higher ampacity DC circuits
• Incorporates Class R rejection feature. Installation in a rejection
base fuse block is recommended as it helps prevent a lesser-
rated fuse from being installed. However, both KWN-R and
KWS-R fuses can be inserted in non-rejection type fuse holders
to physically and electrically replace fast-acting Class H, RK1, K5,
RK5 and other fast-acting fuses.
Recommended fuse blocks:
Fuse amps
1-pole
2-pole
250V KWN-R
0-30
RM25030-1_ RM25030-2_
35-60
RM25060-1_ RM25060-2_
600V KWS-R
0-30
RM60030-1_ RM60030-2_
35-60
RM60060-1_ RM60060-2_
See data sheet No. 10289 for details.
3-pole
RM25030-3_
RM25060-3_
RM60030-3_
RM60060-3_
Fuse reducers for Class R fuses:
Equipment
fuse clips
Desired fuse
(case) size
Catalog numbers (pairs)
250V
600V
60A
30A
NO.263-R
NO.663-R
100A
30A
NO.213-R
NO.216-R
60A
NO.216-R
NO.616-R
200A
60A
NO.226-R
NO.626-R
For additional information on Class R fuse reducers, see data sheet
No. 1118.
Dimensions - in:
250V KWN-R
2"
(± 0.31)
0.56" (± 0.008)
1/10 to 30A
3"
(± 0.31)
35 to 60A
0.81" (± 0.008)
600V KWS-R
5"
(± 0.31)
1/10 to 30A
0.81" (± 0.008)
5.5"
(± 0.31)
35 to 60A
1.06" (± 0.008)
2
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