Chapter 3—Installation and Wiring
32
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Figure 39. Motor Connections for Standard Overload Control Using Potential Transformers with C445BD…
Legend
Q1 = Cable and motor protection.
Q11 = Run contactor.
External CT = External Current Transformer, connect in
accordance with manufacturer’s instructions.
PTC = Positive Temperature Coefficient (PTC) sensor.
CH1
T1
T2
V1
V2
V3
C445M...
I1
I2
C445BD...
CH1
CH2
CH1
C445U...
I3
I4
C
0V
24V
Q1
Q1
Q2
Q2
Q3
C
Q3
24V
0V
PE
C
D0
D1
CH2
1
2
3
4
5
6
7
8
PTC
MOTOR
3~
L2
L3
PE
L1
(+) Us
(-) Us
24 VDC
Optional Modbus
Q11
Q1
POTENTIAL
TRANSFORMER