SIEMENS
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Siemens IC 10 · 2017
Power Contactors for Switching Motors
SIRIUS 3RT contactors, 3-pole up to 250 kW
3
1)
Industrial furnaces and electric heaters with resistance heating, etc.
(increased power consumption on heating up has been taken into
account).
Type
3RT1054
3RT1055
3RT1056
3RT1064
3RT1065
3RT1066
3RT1075
3RT1076
Size
S6
S10
S12
Rated data of the main contacts
Load rating with AC
Utilization category AC-1
Switching resistive load
• Rated operational currents
I
e
-
At 40 °C up to 690 V
A
160
185
215
275
330
430
610
-
At 60 °C up to 690 V
A
140
160
185
250
300
400
550
-
At 60 °C up to 1 000 V
A
80
90
100
150
200
• Rated power for AC loads
1)
with p.f.
= 0.95 (at 60 °C)
-
At 230 V
kW
53
60
70
94
113
151
208
-
At 400 V
kW
92
105
121
164
197
263
362
-
At 500 V
kW
115
131
152
205
246
329
452
-
At 690 V
kW
159
181
210
283
340
454
624
-
At 1 000 V
kW
131
148
165
164
246
329
• Minimum conductor cross-section for loads with
I
e
-
At 40 °C
mm
2
70
95
150
185
2 x 150
2 x 185
-
At 60 °C
mm
2
50
70
95
120
185
240
2 x 185
Utilization categories AC-2 and AC-3
• Rated operational currents
I
e
-
Up to 500 V
A
115
150
185
225
265
300
400
500
-
At 690 V
A
115
150
170
225
265
280
400
450
-
At 1 000 V
A
53
65
68
95
180
• Rated power for slipring or squirrel-cage motors
at 50 and 60 Hz
-
At 230 V
kW
37
50
61
73
85
97
132
164
-
At 400 V
kW
64
84
104
128
151
171
231
291
-
At 500 V
kW
81
105
132
160
189
215
291
363
-
At 690 V
kW
113
146
167
223
265
280
400
453
-
At 1 000 V
kW
75
90
132
250
Thermal load capacity,
10 s current
A
1 100
1 300
1 480
1 800
2 400
3 200
4 000
Power loss per main conducting path
at
I
e
/AC-3/500 V
W
7
9
13
17
18
22
35
55
Utilization category AC-4
(for
I
a
= 6 x
I
e
)
Maximum values:
• Rated operational current
I
e
-
Up to 400 V
A
97
132
160
195
230
280
350
430
• Rated power of squirrel-cage motors
with 50 and 60 Hz
-
At 400 V
kW
55
75
90
110
132
160
200
250
The following applies to a contact endurance
of about 200 000 operating cycles:
• Rated operational currents
I
e
-
Up to 500 V
A
54
68
81
96
117
125
150
175
-
Up to 690 V
A
48
57
65
85
105
115
135
150
• Rated power of squirrel-cage motors
with 50 and 60 Hz
-
At 230 V
kW
16
20
25
30
37
40
48
56
-
At 400 V
kW
29
38
45
54
66
71
85
98
-
At 500 V
kW
37
47
57
67
82
87
105
123
-
At 690 V
kW
48
55
65
82
102
112
133
148
© Siemens AG 2016