Table 20: Recommended Maximum UL Fuse Class, Voltage Range 525–690 V, Enclosure Sizes A, B, and C
Class fuses
Semiconductor fuses
Power [hp]
RK1/J/T [A]
CC [A]
SIBA
1.5
5
(1)
5
5017906-005
2.0–3.0
10
10
5017906-010
4.0
15
15
5017906-016
5.0
20
20
5017906-020
7.5
25
25
5017906-025
10
30
30
5017906-030
15
35
–
5014006-040
20
45
–
5014006-050
25
50
–
5014006-050
30
60
–
5014006-063
40
80
–
5014006-080
50
100
–
5014006-100
60
125
–
2028220-125
75
150
–
2028220-150
100
175
–
2028220-200
1
Bussmann Class T allowed up to 6 A.
N O T I C E
UL Compliance only for 525–600 V.
Table 21: UL Approved Branch Circuit Protection
Enclo-
sure
size
Enclo-
sure
(1)
Voltage [V]
Power [hp]
HO
Maximum in-
terrupting
rating for lis-
ted circuit
breakers
Maxi-
mum
ampere
rating
[A]
Further information
A4/A5
Type 4X
380–500
(T5)
0.5, 0.75,
1.0, 1.5, 2.0,
3.0, 4.0, 5.0,
7.5, 10
100 kA (at
480 V)
25
Any UL 489 listed circuit breaker, maximum
25 A.
A5
Type 4X
200–240 V
(T2)
4.0, 5.0
Specific type
25
ABB MS165-25 480V/277Y 65 kA.
A5
Type 4X
380–500 V
(T5)
7.5, 10
Specific type
25
ABB MS165-25 480V/277Y 65 kA.
A5
Type 4X
525–600 V
(T6)
5.0, 7.5, 10
Specific type
25
ABB MS165-25 600V/347Y 30 kA.
AN354546796134en-000201 / 130R0954
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Electrical Installation
VLT®AutomationDrive EZ FC 321
Installation Guide
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