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 | |||||||||
| 200V | 230V | 460V 575V | 200V | 230V | 460V 575V | 200V | 230V | 460V 575V | 200V | 230V | 460V 575V | |
| 00 0 1 2 3 4 5 6 7 8 9 | 1½ 3 7½ 10 25 40 75 150 – – – – – – | 1½ 3 7½ 15 30 50 100 200 300 450 800 | 2 5 10 25 50 100 200 400 600 900 1600 | – – – – 7½ 10 25 40 75 150 – – – – – – | – – – – 7½ 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 |