LIMITRON™ Class RK1 250V
KTN-R — 250Vac, 1-600A, Fast-Acting Fuses
Dimensions – in
10.38"
0.0ꢁ42
6"
(
(
0.312
0.5ꢀ" ( 0.0082
6.5ꢁ" ( 0.0082
6.0ꢀ" ( 0.0082
1.5ꢀ" ( 0.0082
1/10 to 30A
450 to ꢀ00A
8.ꢀ3"
0.0ꢁ42
3"
(
(
0.312
0.81" ( 0.0082
35 to ꢀ0A
665 to 400A
5.88"
7.13"
0.0ꢀ62
(
0.0ꢀ62
(
1.0ꢀ" ( 0.0082
70 to 100A
110 to 600A
Description: Advanced protection Class RK1 current-limiting,
fast-acting fuses.
Features:
• Single-element, fast-acting fuses with minimal time-delay
• Provides a high degree of short-circuit current-limitation
(component protection)
Catalog Symbol: KTN-R-(amp)
Ratings:
• Particularly suited for circuits and loads with no heavy surge
currents of motors, transformers, solenoids and welders
• Commonly used to protect circuit breakers with lower
interrupting ratings
• If used in circuits with surge currents (motors, etc.) must be
sized to prevent unwanted opening and thus only provide
short-circuit protection
Volts — 250Vac
— 250Vdc (70-600A)
Amps — 1-600A
IR — 200kA Vac RMS Sym.
— 100kA Vdc
• Incorporate Class R rejection feature. Can be inserted in
non-rejection type fuse holders to physically and electrically
replace fast-acting Class H, K1, K5, RK5, and other fast-
acting fuses.
Agency Information:
UL Listed, Std. 248-12, Class RK1, Guide JDDZ, File E4273
CSA Certified, C22.2 No. 248.12, Class 1422-02, File 53787
Catalog Numbers (amps)
Recommended Fuse Blocks
Fuse Amps
1-Pole
2-Pole
3-Pole
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-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
H25030-1
H25030-2
H25030-3
0-30
R25030-1
R25030-2
R25030-3
H25060-1
R25060-1
H25060-2
R25060-2
H25060-3
R25060-3
35-60
70-100
RM25100-1CR
RM25200-1CR
RM25400-1CR
RM25600-1CR
RM25100-2CR
RM25200-2CR
RM25400-2CR
RM25600-2CR
RM25100-3CR
RM25200-3CR
RM25400-3CR
RM25600-3CR
110-200
225-400
450-600
For additional information on 250 volt fuse blocks, see
Data Sheet # 1110 (R250) and # 1112 (H250) and product
brochure # 3192 (RM Series).
Carton Quantity and Weight (250Vac)*
Fuse Reducers For Class R Fuses
Amp Rating
1–30
40–60
Carton Qty.
Equipment
Fuse Clips
60A
Desired Fuse
(Case) Size
30A
Catalog Numbers
(Pairs) 250V
10
10
5
NO.263-R
NO.213-R
NO.216-R
NO.226-R
NO.2621-R
NO.2641-R
NO.642-R
NO.2661-R
NO.2662-R
NO.2664-R†
70–100
30A
60A
100A
110–200
225–400
450–600
1
1
1
200A
200A
60A
100A
100A
200A
100A
200A
400A
400A
600A
†
Single reducer only (pair not required).
For additional information on Class R fuse reducers, see
Data Sheet 1118.
0713
BU-SB13739
Page 1 of 3
Data Sheet # 1043