Application – Three-Phase Motors
Table 25 Three-Phase Motor Fuse Sizing
TYPE
MOTOR MODEL PREFIX
RATING
HP | KW | VOLTS |
CIRCUIT BREAKERS OR FUSE AMPS | CIRCUIT BREAKERS OR FUSE AMPS | ||||
| (MAXIMUM PER NEC) |
|
| (TYPICAL SUBMERSIBLE) |
|
STANDARD | DUAL ELEMENT TIME | CIRCUIT | STANDARD | DUAL ELEMENT TIME | CIRCUIT |
FUSE | DELAY FUSE | BREAKER | FUSE | DELAY FUSE | BREAKER |
6"
236650
236600
236660
236610
236620
236651
236601
236661
236611
236621
236652
236602
236662
236612
236622
236653
236603
236663
236613
236623
236654
236604
236664
236614
236624
236655
236605
236665
236615
236625
236656
236606
236666
236616
236626
236667
236617
236627
236668
236618
236628
236669
236619
236629
5 | 3.7 | 200 |
5 | 3.7 | 230 |
5 | 3.7 | 380 |
5 | 3.7 | 460 |
5 | 3.7 | 575 |
7.5 | 5.5 | 200 |
7.5 | 5.5 | 230 |
7.5 | 5.5 | 380 |
7.5 | 5.5 | 460 |
7.5 | 5.5 | 575 |
10 | 7.5 | 200 |
10 | 7.5 | 230 |
10 | 7.5 | 380 |
10 | 7.5 | 460 |
10 | 7.5 | 575 |
15 | 11 | 200 |
15 | 11 | 230 |
15 | 11 | 380 |
15 | 11 | 460 |
15 | 11 | 575 |
20 | 15 | 200 |
20 | 15 | 230 |
20 | 15 | 380 |
20 | 15 | 460 |
20 | 15 | 575 |
25 | 18.5 | 200 |
25 | 18.5 | 230 |
25 | 18.5 | 380 |
25 | 18.5 | 460 |
25 | 18.5 | 575 |
30 | 22 | 200 |
30 | 22 | 230 |
30 | 22 | 380 |
30 | 22 | 460 |
30 | 22 | 575 |
40 | 30 | 380 |
40 | 30 | 460 |
40 | 30 | 575 |
50 | 37 | 380 |
50 | 37 | 460 |
50 | 37 | 575 |
60 | 45 | 380 |
60 | 45 | 460 |
60 | 45 | 575 |
|
|
|
60
45
30
25
20
80
70
45
35
30
100
90
60
45
35
150
150
80
70
60
200
175
100
90
70
250
225
125
110
90
300
250
150
125
100
200
175
150
250
225
175
300
250
200
35
30
17.5
15
12
45
40
25
20
17.5
60
50
35
25
20
90
80
50
40
30
110
100
60
50
40
150
125
80
60
50
175
150
90
70
60
125
100
80
150
125
100
175
150
125
45
40
25
20
15
70
60
35
30
25
90
80
45
40
30
125
110
70
60
45
175
150
90
70
60
200
175
110
90
70
250
225
125
110
90
175
150
110
225
175
150
250
225
175
50
45
30
25
20
80
70
40
35
25
100
90
50
45
35
150
125
80
60
50
175
175
100
80
70
225
200
125
100
80
300
250
150
125
100
200
175
125
250
200
175
300
250
200
25
20
12
10
8
35
30
20
15
11
45
40
25
20
15
60
60
35
30
25
80
70
45
35
30
100
90
50
45
35
125
100
60
50
40
90
70
60
110
90
70
125
100
80
45
40
25
20
15
70
60
35
30
25
90
80
45
40
30
125
110
70
60
45
175
150
90
70
60
200
175
110
90
70
250
200
125
100
80
175
150
110
225
175
150
250
225
175
25
