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Overload Relays
3RB2 Solid-State Overload Relays
3RB22, 3RB23 for high-feature applications
■
Schematics
Protection of single-phase motors
(not in conjunction with internal ground-fault detection)
3RB29 06-2.G1, 3RB29 56-2TG2
L
N
L1
3RB
T1
Schematic representation of a possible application (3-phase)
L1
L2
L3
N
PE
F3 F4 F5
1
3
5
-K1E
2
4
6
F1
L1 L2 L3
T1 T2 T3
U V W
M
3~
40
Siemens · 2011
L2
L3
T2
T3
M
1~
F2
3RB22 83-..., 3RB23 83-...
3RB29 .6-...
3RB29 87-2.
T1 T2
3RB29 56-2TH2, 3RB29 66-2WH2
L
N
3RB29 85-...
A2 A1
H1
READY
CLASS
GND
H2
RESET
5, 10, 20, 30
FAULT
AUTO
THER-
H3
Ground
MAN
MISTOR
Fault
OVER-
H4
LOAD
Y1
Y2
I(-)
I(+)
REMOTE-
4-20 mA
RESET
L1
L2
L3
3RB
T1
T2
T3
M
1~
6A
F6
gL/gG
ON
K1E
S1
OFF
S2
95
06 97 08
K1
K2
96/05
98/07
A1
K1E
A2
NSB0_01527a
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