Short-Circuit Protection: Motor Feeders With 3Rw3 + 3Rt + 3Rb30/3Rb31 - Siemens SIRIUS Configuration Manual
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5.9
Short-circuit protection: Motor feeders with 3RW3 + 3RT +
3RB30/3RB31
Short-circuit protection with fuses for motor feeders with 3RW30 soft starter and 3RB30 / 3RB31
solid-state overload relay up to 480 V / 65 kA, type of coordination 1 and 2
Table 5- 15
Fuse links according to IEC 60947 operating class gG,
(SITOR; type 3NA, 3NE)
Overload relay
MLFB
Setting range
Size S00
3RB3016-
1 ... 4
1PB0
3RB3016-
3 ... 12
1SB0
3RB3016-
4 ... 16
1TB0
Size S0
3RB3026-
6 ... 25
1QB0
3RB3026-
10 ... 40
1VB0
Please take account of the operating voltage
1)
Assignment and short-circuit protective devices acc. to DIN EN 60947-4-1
2)
Configuring SIRIUS Innovations
Configuration Manual, 04/2010, A8E56203880102-02
5.9 Short-circuit protection: Motor feeders with 3RW3 + 3RT + 3RB30/3RB31
Contactor
Soft starter
MLFB
kW
MLFB
3RT2015
3,0
3RW3013
3RT2016
4,0
3RW3013
3RT2015
3,0
3RW3014
3RT2016
4,0
3RW3014
3RT2017
5,5
3RW3016
3RT2017
5,5
3RW3017
3RT2018
7,5
3RW3018
3RT2025
7,5
3RW3026
3RT2026
11,0 3RW3026
3RT2027
15,0 3RW3027
3RT2025
7,5
3RW3026
3RT2026
11,0 3RW3026
3RT2027
15,0 3RW3027
3RT2028
18,5 3RW3028
Fused selection tables up to 690 V
Current carrying
capacity
I
at 400 V and
e
kW
40 °C
50 °C
60 °C
1,5
3,6
3,3
3,0
1,5
3,6
3,3
3,0
3,0
6,5
6,0
5,5
3,0
6,5
6,0
5,5
4,0
9,0
8,0
7,0
5,5
12,5
12,0
11,0
7,5
16,0
16,0
14,0
11,0
17,0
17,0
17,0
11,0
25,0
23,0
21,0
15,0
25,0
25,0
25,0
11,0
17,0
17,0
17,0
11,0
25,0
23,0
21,0
15,0
32,0
29,0
26,0
18,5
38,0
34,0
31,0
Fuse links
1)
Type of coordination
2)
1
2
10
16
10
16
16
16
16
16
20
16
25
16
35
20
63
35
63
35
80
80
63
35
63
35
80
80
80
80
87
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