12.3.5 UL fuses and conductor cross-sections to mains and motor, for installations in North America
Typical shaft
power P2
Fuse type
Maximum
conductor
cross-
section
Bussmann
SIBA
Littel Fuse
Ferraz-Shawmut
RK1/E1958/
JFHR2
J/E4273 T/
JDDZ
T/E4274 H/
JDDZ
RK1/
Bussmann
E125085
JFHR2
RK1/SIBA
E180276 RKI/
JDDZ
CC/Littel Fuse
E71611 JFHR2
RK1/E60314
JFHR2
[kW (hp)]
[AWG]
1 x 200-240 V
1.1 (1.5)
KTN-R20
-
-
-
-
-
-
10
1.5 (2)
KTN-R30
-
-
-
-
-
-
7
2.2 (3)
KTN-R40
-
-
-
-
-
-
7
3 (4)
KTN-R40
-
-
-
-
-
-
7
3.7 (5)
KTN-R60
-
-
-
-
-
-
7
5.5 (7.5)
-
-
-
-
-
-
-
7
7.5 (10)
-
-
-
-
-
-
-
2
3 x 200-240 V
0.75 (1)
KTN-R10
JKS-10
JJN-10
5017906-010 KTN-R10
ATM-R10
A2K-10R
10
1.1 (1.5)
KTN-R20
JKS-20
JJN-20
5017906-020 KTN-R20
ATM-R20
A2K-20R
10
1.5 (2)
KTN-R20
JKS-20
JJN-20
5017906-020 KTN-R20
ATM-R20
A2K-20R
10
2.2 (3)
KTN-R20
JKS-20
JJN-20
5017906-020 KTN-R20
ATM-R20
A2K-20R
10
3 (4)
KTN-R30
JKS-30
JJN-30
5012406-032 KTN-R30
ATM-R30
A2K-30R
10
3.7 (5)
KTN-R30
JKS-30
JJN-30
5012406-032 KTN-R30
ATM-R30
A2K-30R
10
5.5 (7.5)
KTN-R50
JKS-50
JJN-50
5012406-050 KLN-R50
-
A2K-50R
7
7.5 (10)
KTN-R50
JKS-60
JJN-60
5012406-050 KLN-R60
-
A2K-50R
7
11 (15)
KTN-R60
JKS-60
JJN-60
5014006-063 KLN-R60
A2K-60R
A2K-60R
7
15 (20)
KTN-R80
JKS-80
JJN-80
5014006-080 KLN-R80
A2K-80R
A2K-80R
2
18.5 (25)
KTN-R125
JKS-150
JJN-125
2028220-125 KLN-R125
A2K-125R
A2K-125R
1/0
22 (30)
KTN-R125
JKS-150
JJN-125
2028220-125 KLN-R125
A2K-125R
A2K-125R
1/0
30 (40)
FWX-150
-
-
2028220-150 L25S-150
A25X-150
A25X-150
1/0
37 (50)
FWX-200
-
-
2028220-200 L25S-200
A25X-200
A25X-200
4/0
45 (60)
FWX-250
-
-
2028220-250 L25S-250
A25X-250
A25X-250
250 MCM
3 x 380-500 V
0.55 (0.75)
KTS-R10
JKS-10
JJS-10
5017906-010 KTN-R10
ATM-R10
A2K-10R
10
0.75 (1)
KTS-R10
JKS-10
JJS-10
5017906-010 KTN-R10
ATM-R10
A2K-10R
10
1.1 (1.5)
KTS-R10
JKS-10
JJS-10
5017906-010 KTN-R10
ATM-R10
A2K-10R
10
1.5 (2)
KTS-R10
JKS-10
JJS-10
5017906-010 KTN-R10
ATM-R10
A2K-10R
10
2.2 (3)
KTS-R20
JKS-20
JJS-20
5017906-020 KTN-R20
ATM-R20
A2K-20R
10
3 (4)
KTS-R20
JKS-20
JJS-20
5017906-020 KTN-R20
ATM-R20
A2K-20R
10
4 (5)
KTS-R20
JKS-20
JJS-20
5017906-020 KTN-R20
ATM-R20
A2K-20R
10
5.5 (7.5)
KTS-R30
JKS-30
JJS-30
5012406-032 KTN-R30
ATM-R30
A2K-30R
10
7.5 (10)
KTS-R30
JKS-30
JJS-30
5012406-032 KTN-R30
ATM-R30
A2K-30R
10
11 (15)
KTS-R40
JKS-40
JJS-40
5014006-040 KLS-R40
-
A6K-40R
7
15 (20)
KTS-R40
JKS-40
JJS-40
5014006-040 KLS-R40
-
A6K-40R
7
18.5 (25)
KTS-R50
JKS-50
JJS-50
5014006-050 KLS-R50
-
A6K-50R
7
22 (30)
KTS-R60
JKS-60
JJS-60
5014006-063 KLS-R60
-
A6K-60R
2
30 (40)
KTS-R80
JKS-80
JJS-80
2028220-100 KLS-R80
-
A6K-80R
2
37 (50)
KTS-R100
JKS-100
JJS-100
2028220-125 KLS-R100
-
A6K-100R
1/0
45 (60)
KTS-R125
JKS-150
JJS-150
2028220-125 KLS-R125
-
A6K-125R
1/0
55 (75)
KTS-R150
JKS-150
JJS-150
2028220-160 KLS-R150
-
A6K-150R
1/0
75 (100)
FWH-220
-
-
2028220-200 L50S-225
-
A50-P225
4/0
90 (125)
FWH-250
-
-
2028220-250 L50S-250
-
A50-P250
250 MCM
110 (150)
FWH-300
JJS-300
NOS-300
170M3017
2028220-38
L50S-300
A50-P300
2 x 2/0
132 (200)
FWH-350
JJS-350
NOS-350
170M3018
2028220-38
L50S-350
A50-P350
2 x 2/0
160 (250)
FWH-400
JJS-400
NOS-400
170M4012
206xx32-400
L50S-400
A50-P400
2 x 350 MCM
38
English (GB)