Brochure

31
5/98
© 1998 Square D All Rights Reserved
Thermal Unit Selection
Tables 53 thru 63
T
able 53
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
1 T. U. 3 T. U.
0.31-0.33
0.34-0.36
0.37-0.40
0.41-0.48
0.49-0.57
0.29-0.31
0.32-0.36
0.37-0.38
0.39-0.46
0.47-0.55
B 0.44
B 0.51
B 0.57
B 0.63
B 0.71
0.58-0.64
0.65-0.70
0.71-0.77
0.78-0.85
0.86-0.99
0.56-0.61
0.62-0.66
0.67-0.75
0.76-0.83
0.84-0.93
B 0.81
B 0.92
B 1.03
B 1.16
B 1.30
1.00-1.10
1.11-1.28
1.29-1.14
1.42-1.58
1.59-1.80
0.94-1.06
1.07-1.18
1.19-1.31
1.32-1.47
1.48-1.67
B 1.45
B 1.67
B 1.88
B 2.10
B 2.40
1.81-2.03
2.04-2.25
2.26-2.51
2.52-2.83
2.84-3.29
1.68-1.83
1.84-2.04
2.05-2.38
2.39-2.60
2.61-3.13
B 2.65
B 3.00
B 3.30
B 3.70
B 4.15
3.30-3.75
3.76-4.22
4.23-4.65
4.66-5.16
5.17-5.53
3.14-3.59
3.60-3.94
3.95-4.19
4.20-4.72
4.73-5.21
B 4.85
B 5.50
B 6.25
B 6.90
B 7.70
5.54-6.09
6.10-6.80
6.81-7.60
7.61-8.35
8.36-9.00
5.22-5.51
5.52-6.17
6.18-7.00
....
....
B 8.20
B 9.10
B 10.2
B 11.5
B 12.8
T
able 57
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
2 T. U. 3 T. U.
5.09-5.59
5.60-6.11
6.12-6.72
6.73-7.37
7.38-7.67
5.15-5.97
5.98-6.50
6.51-7.04
7.05-7.59
7.60-7.93
AR 8.5
AR 9.3
AR 10.2
AR 11.2
AR 12.4
7.68-8.68
8.69-9.94
9.95-11.1
11.2-12.9
13.0-14.7
7.94-9.04
9.05-10.2
10.3-11.5
11.6-13.2
13.3-14.9
AR 13.6
AR 15.4
AR 17.6
AR 20.5
AR 23
14.8-16.9
17.0-19.2
19.3-21.9
22.0-24.4
24.5-26.3
15.0-16.9
17.0-19.3
19.4-21.7
21.8-25.0
25.1-27.0
AR 27
AR 30
AR 35
AR 40
AR 44
26.4-28.0
28.1-30.3
30.4-32.2
32.3-34.4
34.5-36.6
27.1-29.1
29.2-30.8
30.9-32.9
33.0-35.0
35.1-37.1
AR 47
AR 51
AR 55
AR 60
AR 66
36.7-39.5
39.6-45.0
....
37.2-39.1
39.2-41.5
41.6-45.0
AR 72
AR 79
AR 86
T
able 61
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
2 T. U. 3 T. U.
46.8-50.0
50.1-54.2
54.3-58.3
58.4-63.6
63.7-68.5
45.3-48.2
48.3-52.4
52.5-56.4
56.5-61.2
61.3-66.1
CC 64.3
CC 68.5
CC 74.6
CC 81.5
CC 87.7
68.6-74.0
74.1-79.8
79.9-83.0
83.1-88.9
89.0-95.6
66.2-71.4
71.5-77.0
77.1-79.0
79.1-84.7
84.8-91.1
CC 94.0
CC 103
CC 112
CC 121
CC 132
95.7-102.
103.-109.
110.-119.
120.-133.
....
91.2-98.1
98.2-104.
105.-113.
114.-123.
124.-133.
CC 143
CC 156
CC 167
CC 180
CC 196
Table 54
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
2 T. U. 3 T. U.
43.6-45.5
45.6-49.6
49.7-53.1
53.2-57.6
57.7-62.4
41.1-43.5
43.6-46.8
46.9-50.0
50.1-54.9
55.0-57.5
CC 64.3
CC 68.5
CC 74.6
CC 81.5
CC 87.7
62.5-67.5
67.6-71.1
71.2-75.9
76.0-81.9
82.0-84.6
57.6-61.8
61.9-66.2
66.3-72.4
72.5-78.1
78.2-80.7
CC 94.0
CC 103
CC 112
CC 121
CC 132
84.7-90.7
90.8-98.4
98.5-105.
106.-117.
118.-123.
80.8-86.5
86.6-93.9
94.0-100.
101.-112.
113.-117.
CC 143
CC 156
CC 167
CC 180
CC 196
124.-133.
....
118.-123.
124.-133.
CC 208
CC 219
Table 58
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
1 or 2 T. U. 3 T. U.
3.37-3.82
3.83-4.33
4.34-4.79
4.80-5.33
5.34-5.79
3.28-3.51
3.52-3.89
3.90-4.14
4.15-4.73
4.74-5.22
B 4.85
B 5.50
B 6.25
B 6.90
B 7.70
5.80-6.27
6.28-7.03
7.04-7.88
7.89-8.73
8.74-9.55
5.23-5.53
5.54-6.21
6.22-7.17
7.18-8.19
8.20-8.90
B 8.20
B 9.10
B 10.2
B 11.5
B 12.8
9.56-10.6
10.7-11.8
11.9-13.1
13.2-14.9
15.0-16.9
8.91-9.57
9.58-10.6
10.7-11.8
11.9-12.7
12.8-14.4
B 14
B 15.5
B 17.5
B 19.5
B 22
17.0-18.8
18.9-21.5
21.6-24.1
24.2-26.8
26.9-29.9
14.5-16.1
16.2-18.2
18.3-20.2
20.3-22.8
22.9-25.6
B 25
B 28.0
B 32
B 36
B 40
30.0-35.5
35.6-36.5
36.6-39.6
39.7-41.5
41.6-45.0
25.7-28.8
28.9-30.6
30.7-32.4
32.5-34.6
34.7-38.6
B 45
B 50
B 56
B 62
B 70
.... 38.7-45.0 B 79
Table 62
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
2 T. U. 3 T. U.
4.83-5.33
5.34-5.84
5.85-6.43
6.44-7.03
7.04-7.30
4.90-5.68
5.69-6.19
6.20-6.71
6.72-7.14
7.15-7.49
AR 8.5
AR 9.3
AR 10.2
AR 11.2
AR 12.4
7.31-8.29
8.30-9.49
9.50-10.7
10.8-12.3
12.4-14.0
7.50-8.48
8.49-9.66
9.67-10.8
10.9-12.4
12.5-13.9
AR 13.6
AR 15.4
AR 17.6
AR 20.5
AR 23
14.1-16.0
16.1-18.4
18.5-21.0
21.1-23.0
23.1-25.5
14.0-15.7
15.8-18.1
18.2-20.3
20.4-23.0
23.1-25.2
AR 27
AR 30
AR 35
AR 40
AR 44
25.6-26.7
26.8-28.3
28.4-30.3
30.4-32.5
32.6-34.5
25.3-26.6
26.7-28.2
28.3-30.2
30.3-32.3
32.4-34.3
AR 47
AR 51
AR 55
AR 60
AR 66
34.6-37.6
37.7-39.7
39.8-41.4
41.5-45.0
34.4-36.7
36.8-36.3
39.4-45.0
....
AR 72
AR 79
AR 86
AR 94
Table 56
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
1 or 2 T. U. 3 T. U.
3.29-3.74
3.75-4.23
4.24-4.68
4.69-5.22
5.23-5.67
3.18-3.40
3.41-3.76
3.77-4.00
4.01-4.57
4.58-5.03
B 4.85
B 5.50
B 6.25
B 6.90
B 7.70
5.68-6.13
6.14-6.91
6.92-7.70
7.71-8.56
8.57-9.39
5.04-5.32
5.33-5.97
5.98-6.88
6.89-7.82
7.83-8.47
B 8.20
B 9.10
B 10.2
B 11.5
B 12.8
9.40-10.4
10.5-11.6
11.7-12.9
13.0-14.6
14.7-16.5
8.48-9.15
9.16-10.1
10.2-11.2
11.3-12.0
12.1-13.6
B 14
B 15.5
B 17.5
B 19.5
B 22
16.6-18.5
18.6-21.0
21.1-23.6
23.7-26.3
26.4-29.3
13.7-15.2
15.3-17.1
17.2-19.0
19.1-21.5
21.6-24.1
B 25
B 28.0
B 32
B 36
B 40
29.4-35.1
35.2-36.1
36.2-39.1
39.2-41.5
41.6-45.0
24.2-27.0
27.1-28.7
28.8-30.4
30.5-32.2
32.3-35.4
B 45
B 50
B 56
B 62
B 70
....
....
35.5-38.2
38.3-45.0
B 79
B 88
Table 60
Motor Full-
Load Current
(Amp)
Thermal Unit
Number
6.84-7.49
7.50-8.05
8.06-9.10
9.11-9.99
10.0-11.1
AR 9.3
AR 10.2
AR 11.2
AR 12.4
AR 13.6
11.2-12.7
12.8-14.8
14.9-16.6
16.7-19.3
19.4-21.4
AR 15.4
AR 17.6
AR 20.5
AR 23
AR 27
21.5-25.1
25.2-28.3
28.4-31.2
31.3-33.3
33.4-35.7
AR 30
AR 35
AR 40
AR 44
AR 47
35.8-38.5
38.6-41.5
41.6-45.0
AR 51
AR 55
AR 60
Table 63
Motor
Full-Load
Current (Amp)
Thermal Unit
Number
1 or 2 T. U. 3 T. U.
15.1-17.0
17.1-19.1
19.2-21.8
21.9-24.5
24.6-27.9
AU 20
AU 23
AU 26
AU 29
AU 33
28.0-29.5
29.6-32.9
33.0-36.6
36.7-40.3
40.4-45.1
AU 38
AU 40
AU 44
AU 50
AU 56
45.2-50.4
50.5-57.3
57.4-62.4
62.5-68.3
68.4-73.9
AU 64
AU 72
AU 81
AU 88
AU 99
74.0-80.6
80.7-86.0
AU 110
AU 123
Table 55
Motor Load-Full
Current (Amp)
Thermal
Unit
Number
2 T. U. 3 T. U.
0.38-0.40
0.41-0.43
0.44-0.48
0.49-0.52
0.53-0.56
0.31-0.33
0.34-0.36
0.37-0.39
0.40-0.43
0.44-0.47
AR .45
AR .49
AR .54
AR .59
AR .65
0.57-0.61
0.62-0.67
0.68-0.73
0.74-0.81
0.82-0.89
0.48-0.51
0.52-0.56
0.57-0.58
0.59-0.64
0.65-0.70
AR .71
AR .78
AR .86
AR .95
AR 1.05
0.90-0.97
0.98-1.07
1.08-1.17
1.18-1.31
1.32-1.49
0.71-0.77
0.78-0.85
0.86-0.94
0.95-1.03
1.04-1.22
AR 1.15
AR 1.26
AR 1.39
AR 1.53
AR 1.68
1.50-1.69
1.70-1.83
1.84-2.00
2.01-2.17
2.18-2.35
1.23-1.34
1.35-1.46
1.47-1.58
1.59-1.76
1.77-1.85
AR 1.85
AR 2.04
AR 2.24
AR 2.46
AR 2.71
2.36-2.60
2.61-2.87
2.88-3.14
3.15-3.47
3.48-3.90
1.86-2.08
2.09-2.27
2.28-2.51
2.52-2.90
2.91-3.23
AR 2.98
AR 3.28
AR 3.62
AR 3.98
AR 4.37
3.91-4.36
4.37-4.88
4.89-5.37
5.38-5.97
5.98-6.55
3.24-3.58
3.59-4.02
4.03-4.43
4.44-4.86
4.87-5.37
AR 4.80
AR 5.3
AR 5.8
AR 6.4
AR 7.0
6.56-7.50
7.51-8.23
8.24-9.00
5.38-6.12
6.13-6.65
6.66-7.00
AR 7.7
AR 8.5
AR 9.3
Table 59
Motor Full-Load
Current (Amp)
Thermal
Unit
Number
1 or 2 T. U. 3 T. U.
0.34-0.38
0.39-0.43
0.44-0.47
0.48-0.53
0.54-0.60
0.29-0.31
0.32-0.35
0.36-0.38
0.39-0.46
0.47-0.55
B 0.44
B 0.51
B 0.57
B 0.63
B 0.71
0.61-0.68
0.69-0.76
0.77-0.86
0.87-0.97
0.98-1.07
0.56-0.62
0.63-0.67
0.68-0.75
0.76-0.84
0.85-0.95
B 0.81
B 0.92
B 1.03
B 1.16
B 1.30
1.08-1.23
1.24-1.39
1.40-1.55
1.56-1.77
1.78-1.96
0.96-1.09
1.10-1.21
1.22-1.35
1.36-1.53
1.54-1.73
B 1.45
B 1.67
B 1.88
B 2.10
B 2.40
1.97-2.15
2.16-2.41
2.42-2.71
2.72-3.03
3.04-3.53
1.74-1.90
1.91-2.14
2.15-2.34
2.35-2.67
2.68-3.22
B 2.65
B 3.00
B 3.30
B 3.70
B 4.15
3.54-4.01
4.02-4.56
4.57-5.03
5.04-5.59
5.60-5.95
3.23-3.48
3.49-3.87
3.88-4.14
4.15-4.73
4.74-5.28
B 4.85
B 5.50
B 6.25
B 6.90
B 7.70
5.96-6.58
6.59-7.31
7.32-8.15
8.16-9.13
9.14-9.91
5.29-5.64
5.65-6.39
6.40-7.43
7.44-8.55
8.56-9.40
B 8.20
B 9.10
B 10.2
B 11.5
B 12.8
9.92-10.7
10.8-12.1
12.2-13.5
13.6-15.1
15.2-17.0
9.41-10.0
10.1-11.2
11.3-12.5
12.6-13.5
13.6-15.4
B 14
B 15.5
B 17.5
B 19.5
B 22
17.1-18.9
19.0-21.5
21.6-24.0
24.1-26.0
....
15.5-17.5
17.6-19.9
20.0-22.2
22.3-25.5
25.6-26.0
B 25
B 28.0
B 32
B 36
B 40