| |
 Table
23 Three-Phase Motor Fuse Sizing |
| Type |
Motor
Model
Prefix |
Rating |
Circuit Breakers
or Fuse Amps |
Circuit Breakers
or Fuse Amps |
| (Maximum
per NEC) |
(Typical
Submersible) |
Standard
Fuse |
Dual Element
Time Delay Fuse |
Circuit
Breaker |
Standard
Fuse |
Dual Element
Time Delay Fuse |
Circuit Breaker |
| HP |
KW |
Volts |
4
Inch |
234501 |
1/2 |
.37 |
200 |
10 |
5.00 |
8 |
10 |
4 |
15 |
| 234511 |
1/2 |
.37 |
230 |
8 |
4.50 |
6 |
8 |
4 |
15 |
| 234541 |
1/2 |
.37 |
380 |
5 |
2.50 |
4 |
5 |
2 |
15 |
| 234521 |
1/2 |
.37 |
460 |
4 |
2.25 |
3 |
4 |
2 |
15 |
| 234531 |
1/2 |
.37 |
575 |
3 |
1.8 |
3 |
3 |
1.4 |
15 |
| 234502 |
3/4 |
.55 |
200 |
15 |
7.00 |
10 |
12 |
5 |
15 |
| 234512 |
3/4 |
.55 |
230 |
10 |
5.60 |
8 |
10 |
5 |
15 |
| 234542 |
3/4 |
.55 |
380 |
6 |
3.50 |
5 |
6 |
3 |
15 |
| 234522 |
3/4 |
.55 |
460 |
5 |
2.80 |
4 |
5 |
3 |
15 |
| 234532 |
3/4 |
.55 |
575 |
4 |
2.50 |
4 |
4 |
1.8 |
15 |
| 234503 |
1 |
.75 |
200 |
15 |
8.00 |
15 |
15 |
6 |
15 |
| 234513 |
1 |
.75 |
230 |
15 |
7.00 |
10 |
12 |
6 |
15 |
| 234543 |
1 |
.75 |
380 |
8 |
4.50 |
8 |
8 |
4 |
15 |
| 234523 |
1 |
.75 |
460 |
6 |
3.50 |
5 |
6 |
3 |
15 |
| 234533 |
1 |
.75 |
575 |
5 |
2.80 |
4 |
5 |
2.5 |
15 |
| 234504 |
1 1/2 |
1.1 |
200 |
20 |
12.00 |
15 |
20 |
8 |
15 |
| 234514 |
1 1/2 |
1.1 |
230 |
15 |
9.00 |
15 |
15 |
8 |
15 |
| 234544 |
1 1/2 |
1.1 |
380 |
10 |
5.60 |
8 |
10 |
4 |
15 |
| 234524 |
1 1/2 |
1.1 |
460 |
8 |
4.50 |
8 |
8 |
4 |
15 |
| 234534 |
1 1/2 |
1.1 |
575 |
6 |
3.50 |
5 |
6 |
3 |
15 |
| 234305 |
2 |
1.5 |
200 |
25 |
15.00 |
20 |
25 |
11 |
20 |
| 234315 |
2 |
1.5 |
230 |
25 |
12.00 |
20 |
25 |
10 |
20 |
| 234345 |
2 |
1.5 |
380 |
15 |
8.00 |
15 |
15 |
6 |
15 |
| 234325 |
2 |
1.5 |
460 |
15 |
6.00 |
10 |
11 |
5 |
15 |
| 234335 |
2 |
1.5 |
575 |
10 |
5.00 |
8 |
10 |
4 |
15 |
| 234306 |
3 |
2.2 |
200 |
35 |
20.00 |
30 |
35 |
15 |
30 |
| 234316 |
3 |
2.2 |
230 |
30 |
17.50 |
25 |
30 |
12 |
25 |
| 234346 |
3 |
2.2 |
380 |
20 |
12.00 |
15 |
20 |
8 |
15 |
| 234326 |
3 |
2.2 |
460 |
15 |
9.00 |
15 |
15 |
6 |
15 |
| 234336 |
3 |
2.2 |
575 |
15 |
7.00 |
10 |
11 |
5 |
15 |
| 234307 |
5 |
3.7 |
200 |
60 |
35.00 |
50 |
60 |
25 |
50 |
| 234317 |
5 |
3.7 |
230 |
50 |
30.00 |
40 |
45 |
20 |
40 |
| 234347 |
5 |
3.7 |
380 |
30 |
17.50 |
25 |
30 |
12 |
25 |
| 234327 |
5 |
3.7 |
460 |
25 |
15.00 |
20 |
25 |
10 |
20 |
| 234337 |
5 |
3.7 |
575 |
20 |
12.00 |
20 |
20 |
8 |
20 |
| 234308 |
7 1/2 |
5.5 |
200 |
90 |
50.00 |
70 |
80 |
35 |
70 |
| 234318 |
7 1/2 |
5.5 |
230 |
80 |
45.00 |
60 |
70 |
30 |
60 |
| 234348 |
7 1/2 |
5.5 |
380 |
45 |
25.00 |
40 |
40 |
20 |
40 |
| 234328 |
7 1/2 |
5.5 |
460 |
40 |
25.00 |
30 |
35 |
15 |
30 |
| 234338 |
7 1/2 |
5.5 |
575 |
30 |
17.50 |
25 |
30 |
12 |
25 |
| 234349 |
10 |
7.5 |
380 |
70 |
40.00 |
60 |
60 |
25 |
60 |
| 234329 |
10 |
7.5 |
460 |
60 |
30.00 |
45 |
50 |
25 |
45 |
| 234339 |
10 |
7.5 |
575 |
45 |
25.00 |
35 |
40 |
20 |
35 |
| 234549 |
10 |
7.5 |
380 |
70 |
35.00 |
60 |
60 |
25 |
60 |
| 234595 |
10 |
7.5 |
460 |
60 |
30.00 |
45 |
50 |
25 |
45 |
| 234598 |
10 |
7.5 |
575 |
45 |
25.00 |
35 |
40 |
20 |
35 |
|
Lengths in BOLD only meet the US National Electrical Code ampacity requirements for individual conductors in free air
or water. Lengths NOT in bold meet NEC ampacity requirements for either individual conductors or jacketed cable. See page 11 for additional details. |
| |
