Fused selection tables up to 690 V
5.3 Short-circuit protection: Contactor + 3RB3 solid-state overload relay
Configuring SIRIUS Innovations
74 Configuration Manual, 04/2010, A8E56203880102-02
5.3 Short-circuit protection: Contactor + 3RB3 solid-state overload relay
Short-circuit protection with fuses for motor feeders with 3RB30 and 3RB31, contactor mounting, and
stand-alone assembly
Table 5- 3 Derating values for overload relay and contactor size S00
CLASS
5 / 10 20 30
Overload
relay
Overload relay
Setting range
Contactor
AC-3 derating values
MLFB A MLFB kW 400 V 500 V 690 V 400 V 500 V 690 V 400 V 500 V 690 V
Stand-alone
assembly
0,4 0,4 0,4 0,4 0,4 0,4 0,4 0,4 0,4 3RB3016-
1RB0
0,1 ... 0,4
3RT2015 3,0 0,4 0,4 0,4 0,4 0,4 0,4 0,4 0,4 0,4
Stand-alone
assembly
1,3 1,3 1,3 1,3 1,3 1,3 1,3 1,3 1,3 3RB3016-
1NB0
0,32 ... 1,25
3RT2015 3,0 1,25 1,25 1,25 1,25 1,25 1,25 1,25 1,25 1,25
Stand-alone
assembly
4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0
3RT2015 3,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0
3RT2016 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0
3RB3016-
1PB0
1 ... 4
3RT2017 5,5 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0 4,0
Stand-alone
assembly
12,0 12,0 12,0 12,0 12,0 12,0 12,0 12,0 12,0
3RT2016 4,0 9,0 7,7 6,7 9,0 6,5 5,2 9,0 6,5 5,2
3RB3016-
1SB0
3 ... 12
3RT2017 5,5 12,0 9,2 6,7 10,0 9,0 6,3 9,0 9,0 6,3
Stand-alone
assembly
16,0 16,0 16,0 16,0 16,0 16,0 16,0 16,0 16,0
3RT2017 5,5 12,0 9,2 6,7 10,0 9,0 6,3 9,0 9,0 6,3
3RB3016-
1TB0
4 ... 16
3RT2018 7,5 16,0 12,4 8,9 12,9 11,6 8,1 11,6 11,6 8,1