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NEMA Size Starters for Three-Phase Motors

 

NEMA
Size
Maximum Horsepower – Polyphase Motors
Full-Voltage
Starting
Auto-Transformer
Starting
Part-Winding
Starting
WYE-DELTA
Starting
200V230V460V
575V
200V230V460V
575V
200V230V460V
575V
200V230V460V
575V
00
0
1
2
3
4
5
6
7
8
9
1�
3
7�
10
25
40
75
150
– –
– –
– –
1�
3
7�
15
30
50
100
200
300
450
800
2
5
10
25
50
100
200
400
600
900
1600
– –
– –
7�
10
25
40
75
150
– –
– –
– –
– –
– –
7�
15
30
50
100
200
300
450
800
– –
– –
10
25
50
100
200
400
600
900
1600
– –
– –
10
20
40
75
150
– –
– –
– –
– –
– –
– –
10
25
50
75
150
300
450
700
2600
– –
– –
15
40
75
150
350
600
900
1400
2600
– –
– –
10
20
40
60
150
300
500
750
1500
– –
– –
10
25
50
75
150
350
500
800
1500
– –
– –
15
40
75
150
300
700
1000
1500
3000

 

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