14
Installation
Fig. 6: Connection example for a three-phase AC motor with PTC resistor tripping de-
vice
U
S
Control voltage
S
1
OFF button
S
2
ON button
S
3
RESET button, external
K1 Contactor
F1 ... F4 Fuses
T1... T3 PTC resistor sensor
H1 Tripping indicator
M
Motor, 3-phase
1)
Only for devices with two
relay outputs
2)
Only for MSR type
3)
Only for order no.:
P 4768 051 FQ
N
L1
M
3
L2
L3
F1 - F3
K1
10
11
AC 220 ... 240 V
Us
F4
U
V W
S1
S2
k1
K1
H1
S3
2)
A1
A2
T1
T2
Y2
Y1
24
21
22
14
12
11
2)
2)
1)
1)
1)
T1...T3
3)
