Motor Control Centers - ROCKWELL AUTOMATION

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CENTERLINE® Motor Control Centers Bulletin 2400 Application-Rated Units

Appendix

Full Load Currents

The full load currents listed below are average values for horsepower rated motors of several manufacturers at the more common rated voltages and speeds. These average values should be used only as a guide for selecting suitable components for the motor branch circuit. The rated full load current shown on the motor nameplate may vary considerably from the listed value, depending on the specific motor design. Important: The motor nameplate full load current always should be used in determining the rating of the devices used for motor running overcurrent protection.

Full Load Current of 3-Phase 60 Hertz AC Induction motors


HP	RPM	Full Load Current			HP	RPM	Full Load Current
HP	RPM	240V	480V	600V	HP	RPM	240V	480V	600V
	3600	1.04	0.52	0.42		3600	96.0	48.0	38.4
.25	1800	1.20	0.60	0.48	40	1800	102	50.8	40.6
	1200	1.40	0.70	0.56		1200	103	51.7	41.4
	3600	1.28	0.64	0.51		3600	122	61.2	49.0
.33	1800	1.46	0.73	0.58	50	1800	125	62.3	49.8
	1200	1.64	0.82	0.66		1200	127	63.4	50.7
	3600	1.80	0.90	0.72		3600	143	71.6	57.3
.50	1800	2.20	1.10	0.88	60	1800	149	74.3	59.4
	1200	2.50	1.25	1.00		1200	150	74.9	59.9
	3600	2.50	1.25	1.00		3600	177	88.5	70.8
.75	1800	3.00	1.50	1.20	75	1800	183	91.4	73.1
	1200	3.30	1.65	1.32		1200	186	93.1	74.5
	3600	3.04	1.52	1.22		3600	231	116	92.6
1	1800	3.68	1.84	1.47	100	1800	239	119	95.5
	1200	3.98	1.99	1.59		1200	243	122	97.2
	3600	4.36	2.18	1.74		3600	288	144	115
1.5	1800	5.02	2.51	2.01	125	1800	294	147	118
	1200	5.62	2.81	2.25		1200	300	150	120
	3600	5.64	2.82	2.26		3600	344	172	138
2	1800	6.22	3.11	2.49	150	1800	350	175	140
	1200	7.10	3.55	2.84		1200	358	179	143
	3600	8.00	4.00	3.20		3600	454	227	182
3	1800	9.04	4.52	3.62	200	1800	460	230	184
	1200	10.1	5.04	4.03		1200	466	233	186
	3600	13.6	6.80	5.44		3600	556	278	222
5	1800	13.8	6.88	5.50	250	1800	570	285	228
	1200	16.1	8.07	6.46		1200	590	295	236
	3600	19.1	9.57	7.66		3600	670	335	268
7.5	1800	21.7	10.8	8.66	300	1800	684	342	274
	1200	23.1	11.5	9.22		1200	696	348	278
	3600	25.7	12.9	10.3		3600	748	374	299
10	1800	27.3	13.7	10.9	350	1800	762	381	305
	1200	28.4	14.2	11.4		1200	774	387	310
	3600	37.2	18.6	14.9		3600	874	437	350
15	1800	40.4	20.2	16.2	400	1800	892	446	357
	1200	42.5	21.3	17.0		1200	902	451	361
	3600	51.3	25.6	20.5		3600	972	486	389
20	1800	51.6	25.8	20.6	450	1800	992	496	397
	1200	53.4	26.7	21.4		1200	1004	502	402
	3600	61.4	30.7	24.6		3600	1074	537	430
25	1800	64.7	32.3	25.9	500	1800	1096	548	438
	1200	65.8	32.9	26.3		1200	1108	554	443
	3600	74.2	37.1	29.7
30	1800 1200	76.4 79.3	38.2 39.7	30.5 31.7

36 Publication 2400-CA001B-EN-P—September 2005