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Maximum Locked-Rotor Currents
Three-Phase Squirrel Cage Motors
NEMA Designs B, C & D

Locked-Rotor Current in Amperes

HP Rated Voltage
200V 230V 460V 575V 2300V 4000V
.5
.75
1
23
29
34
20
25
30
10
12
15
8
10
12
1.5
2
3
46
57
74
40
50
64
20
25
32
16
20
26
5
7.5
10
106
146
186
92
127
162
46
63
81
37
51
65
15
20
25
267
333
420
232
290
365
116
145
182
93
116
146
30
40
50
500
667
834
435
580
725
217
290
362
174
232
290
60
75
100
1000
1250
1665
870
1085
1450
435
542
725
348
434
580
87
108
145
50
62
83
125
150
200
2085
2500
3335
1815
2170
2900
907
1085
1450
726
868
1160
181
217
290
104
125
167
250
300
350
4200
5060
5860
3650
4400
5100
1825
2200
2550
1460
1760
2040
365
440
510
210
253
293
400
450
500
6670
7470
8340
5800
6500
7250
2900
3250
3625
2320
2600
2900
580
650
725
333
374
417

The locked-rotor current of Design B, C and D constant-speed induction motors, when measured with rated voltage and frequency impressed and with rotor locked, shall not exceed the above values.
Reference: NEMA Standards MG 1-12.35.

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Maximum Locked-Rotor Currents
Three-Phase Squirrel Cage Motors
NEMA Design E

Locked-Rotor Current in Amperes

HP Rated Voltage
200V 230V 460V 575V 2300V 4000V
.5
.75
1
23
29
35
20
25
30
10
13
15
8
10
12
1.5
2
3
46
58
84
40
50
73
20
25
37
16
20
29
5
7.5
10
114
210
259
122
183
225
61
92
113
49
73
90
15
20
25
388
516
646
337
449
562
169
225
281
135
180
225
30
40
50
775
948
1185
674
824
1030
337
412
515
270
330
412
60
75
100
1421
1777
2154
1236
1545
1873
618
773
937
494
618
749
124
155
187
71
89
108
125
150
200
2692
3230
4307
2341
2809
3745
1171
1405
1873
936
1124
1498
234
281
375
135
162
215
250
300
350
5391
6461
7537
4688
5618
6554
2344
2809
3277
1875
2247
2622
469
562
655
270
323
377
400
450
500
8614
9691
10767
7490
8427
9363
3745
4214
4682
2996
3371
3745
749
843
936
431
485
538

The locked-rotor current of Design E constant-speed induction motors, when measured with rated voltage and frequency impressed and with rotor locked, shall not exceed the above values.
Reference: NEMA Standards MG 1-12.35A.

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