NEMA Starters
NEMA sized contactors or starters - Select motor horsepower based on NEMA size and voltage. NEMA electrical motor starters are rated by size: 00, 0, 1, 2, 3, 4, 5, 6 and 7.
Polyphase Motors
Maximum electrical motor horsepower for different NEMA starters for three phase motors:
| NEMA Size | 200V | 230V | 460V | 575V |
|---|---|---|---|---|
| 00 | 1.5 | 1.5 | 2 | 2 |
| 0 | 3 | 3 | 5 | 5 |
| 1 | 7.5 | 7.5 | 10 | 15 |
| 2 | 10 | 15 | 25 | 25 |
| 3 | 25 | 30 | 50 | 50 |
| 4 | 40 | 50 | 100 | 100 |
| 5 | 75 | 100 | 200 | 200 |
| 6 | 150 | 200 | 400 | 400 |
| 7 | 300 | 300 | 600 | 600 |
Single Phase Motors
Maximum horsepower with full voltage starting and two pole contactors:
| NEMA Size | 115V | 230V |
|---|---|---|
| 00 | 1/3 | 1 |
| 0 | 1 | 2 |
| 1 | 2 | 3 |
| 2 | 3 | 7.5 |
| 3 | 7.5 | 15 |