BrassMeIn.com: NEMA starter size chart for polyphase - 3 phase motors

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NEMA SIZE STARTERS
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 1 ½ 1 ½ 2 -- -- -- -- -- -- -- -- --
0 3 3 5 -- -- -- -- -- -- -- -- --
1 7 ½ 7 ½ 10 7 ½ 7 ½ 10 10 10 15 10 10 15
2 10 15 25 10 15 25 20 25 40 20 25 40
3 25 30 50 25 30 50 40 50 75 40 50 75
4 40 50 100 40 50 100 75 75 150 60 75 150
5 75 100 200 75 100 200 150 150 350 150 150 300
6 150 200 400 150 200 400 -- 300 600 300 350 700
7 -- 300 600 -- 300 600 -- 450 900 500 500 1000
8 -- 450 900 -- 450 900 -- 700 1400 750 800 1500
9 -- 800 1600 -- 800 1600 -- 1300 2600 1500 1500 3000

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