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E "Standard Trip" Heater Elements for Ambient Temp. Comp. Bimetal Relays
Full Load
Heater
Max. Rat.
Mo. Amps.
Code
of Prot.
No.
Device*
Min
Max
Size 0 & 1
0.67
0.72
E14
3
0.73
0.80
E16
3
0.81
0.85
E17
3
0.86
0.92
E18
3
0.93
0.99
E19
3
1.00
1.08
E23
3
1.09
1.23
E24
3
1.24
1.37
E26
3
1.38
1.54
E27
3
1.55
1.69
E28
3
1.70
1.80
E29
3
1.81
1.94
E31
3
1.95
2.07
E32
3
2.08
2.26
E33
3
2.27
2.54
E34
7
2.55
2.69
E36
7
2.70
2.88
E37
7
2.89
3.14
E38
7
3.15
3.40
E39
7
3.41
3.81
E41
7
3.82
4.26
E42
7
4.27
4.62
E44
7
4.63
5.09
E46
7
5.10
5.61
E47
7
5.62
5.91
E48
7
5.92
6.15
E49
15
6.16
6.70
E50
15
6.71
7 .54
E51
15
7 .55
8.29
E52
15
8.30
8.99
E53
15
9.00
9.85
E54
15
9.86
10.4
E55
15
10.5
12.0
E56
15
12.1
13.6
E57
30
13.7
15.8
E60
30
15.7
17 .0
E61
30
17 .1
18.4
E62
30
18.5
19.4
E65
30
19.5
21.3
E66
30
21.4
24.4
E67
30
24.5
25.9
E69
30
26.0
26.0
E70
30
Size 1 only
D25385-7
Heaters shown in the table provide a max-
imum trip rating of 125% of the motor
nameplate and amps, which is suitable for
40°C motors. For all other motors select
heaters one code number lower than spec-
ified in the table, which give a maximum
trip rating of approximately 115%.
The tripping current of any heater in a 40°C
ambient is 25% greater than the lower
value of motor amps shown in the table.
Starters do not provide protection from
short circuits. A protective device should
be provided in accordance with the NEC
(CEC in Canada) and not exceed the values
shown in the table.
Note: If the rating specified is not a stan-
dard size for the circuit breaker manufactur-
er, use the next largest size.
8
Full Load
Heater
Max. Rat.
Mo. Amps.
Code
of Prot.
No.
Device*
Min
Max
Size 1
3
/
4
2.27
2.54
E34
7
2.55
2.69
E36
7
2.70
2.88
E37
7
2.89
3.14
E38
7
3.15
3.40
E39
7
3.41
3.81
E41
7
3.82
4.25
E42
7
4.26
4.62
E44
7
4.63
5.09
E46
7
5.10
5.61
E47
7
5.62
5.91
E48
7
5.92
6.15
E49
15
6.16
6.70
E50
15
6.71
7 .54
E51
15
7 .55
8.29
E52
15
8.30
8.99
E53
15
9.00
9.85
E54
15
9.86
10.4
E55
15
10.5
12.0
E56
15
12.1
13.6
E57
30
13.7
15.6
E60
30
15.7
17 .0
E61
30
17 .1
19.4
E62
30
19.5
20.9
E65
30
21.0
22.2
E66
30
22.3
25.3
E67
30
25.4
26.9
E69
50
27 .0
30.2
E70
50
30.3
33.3
E72
50
D25556-3
Size 2 & 2
1
/
2
10.5
12.0
E56
50
12.1
13.6
E57
50
13.7
15.6
E60
50
15.7
17 .1
E61
50
17 .2
19.4
E62
50
19.5
20.9
E65
50
21.0
22.2
E66
50
22.3
25.3
E67
50
25.4
26.9
E69
50
27 .0
30.2
E70
50
30.3
33.3
E72
50
33.4
35.3
E73
50
35.4
41.5
E74
50
41.6
45.0
E76
100
1
Size 2
/
only
2
D26069-5
Automatic reset will continue
to reset on two-wire control.
May result in unexpected start
or equipment failure.
When not desired, use three-wire
control. Do not use manual trip but-
ton when relay is set in automatic
reset position.
Wye-delta starters: If the motor nameplate
shows the full load delta line current only,
divide this value by 1.73 or multiply by .58 to
select the proper heater rating.
Full Load
Heater
Max. Rat.
Mo. Amps.
Code
of Prot.
No.
Device*
Min
Max
Size 3 & 3
1
/
2
30.0
33.5
E69
100
33.6
36.4
E70
100
36.5
39.6
E71
100
39.7
43.6
E73
100
43.7
46.5
E73A 100
46.6
51.6
E74
100
51.7
54.4
E76
100
54.5
58.0
E77
100
58.1
63.0
E78
100
63.1
67 .7
E79
100
67 .8
72.4
E80
100
72.5
80.0
E94
100
80.1
88.1
E96
100
88.2
91.5
E97
150
91.6
96.8
E98
150
96.9
99.0
E99
150
99.1
108
E101
150
Size 3
1
/
only
2
D26801-3
Size 4
56.9
60.9
E89
150
61.0
63.9
E91
150
64.0
67 .7
E92
150
67 .8
72.4
E93
150
72.5
77 .7
E94
150
77 .8
85.9
E96
150
86.0
91.9
E97
150
92.0
96.7
E98
150
96.8
105
E99
150
106
115
E103
150
116
130
E104
150
D36024-2
*
Siemens Energy & Automation, Inc.
Full Load
Heater
Max. Rat.
Mo. Amps.
Code
of Prot.
No.
Device*
Min
Max
Size 4
1
/
& 5
2
88.0
98.0
E27
250
98.1
108
E28
250
109
114
E29
250
115
122
E31
250
123
130
E32
250
131
140
E33
250
141
155
E34
250
156
166
E36
250
167
177
E37
250
178
193
E38
400
194
209
E39
400
210
233
E41
400
234
248
E42
400
Size 5 only
D25651-5
Size 6
166
195
E27
400
196
217
E28
400
218
229
E29
400
230
245
E31
400
246
261
E32
400
262
281
E33
400
282
311
E34
400
312
331
E36
400
332
355
E37
400
356
387
E38
600
388
419
E39
600
420
467
E41
600
468
500
E42
600
D25665-3
Ratings specified are for instanta-
neous trip circuit breakers.
Maximum current rating for thermal
magnetic-circuit breakers is 250% of
maximum heater FLA.
Maximum current rating of fuses is:
a.
150% of maximum heater FLA for
Class R, K or L (time delay).
b.
250% of maximum heater FLA
for Class K or L (non-time delay).
c.
300% of maximum heater FLA
for Class J (non-time delay).
If the calculated rating is between
standard sizes, the next larger size
may be used.
Fuse size may not
exceed switch size.
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