Fused selection tables up to 690 V
5.3 Short-circuit protection: Contactor + 3RB3 solid-state overload relay
Configuring SIRIUS Innovations
Configuration Manual, 04/2010, A8E56203880102-02
75
Table 5- 4 Derating values for overload relay and contactor size S0
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 3RB3026-
1RB0
0,1 ... 0,4
3RT2024 5,5 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 3RB3026-
1NB0
0,32 ... 1,25
3RT2024 5,5 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 3RB3026-
1PB0
1 ... 4
3RT2024 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
3RT2024 5,5 12,0 12,0 9,0 12,0 12,0 9,0 12,0 12,0 9,0
3RB3026-
1SB0
3 ... 12
3RT2025 7,5 12,0 12,0 12,0 12,0 12,0 12,0 12,0 12,0 12,0
Stand-alone
assembly
25,0 25,0 25,0 25,0 25,0 25,0 23,0 23,0 23,0
3RT2025 7,5 17,0 17,0 13,0 16,0 16,0 13,0 14,0 14,0 13,0
3RT2026 11,0 25,0 18,0 13,0 16,0 16,0 13,0 14,0 14,0 13,0
3RT2027 15,0 25,0 25,0 21,0 18,6 18,6 15,1 16,2 16,2 15,1
3RB3026-
1QB0
6 ... 25
3RT2028 18,5 25,0 25,0 21,0 22,4 22,4 18,2 19,6 19,6 18,2
Stand-alone
assembly
40,0 40,0 40,0 28,0 28,0 28,0 23,0 23,0 23,0
3RT2027 15,0 32,0 32,0 21,0 18,6 18,6 15,1 16,2 16,2 15,1
3RB3026-
1VB0
10 ... 40
3RT2028 18,5 38,0 32,0 21,0 22,4 22,4 18,2 19,6 19,6 18,2
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