Datasheet

ESG 2.18
Connection
S21S
9 10 11 1 2 3
8 7 6 5 4
R2
R1
K1
110 ... 240 V∼
R1= R2=
9 10 11 1 2 3
8 7 6 5 4
R2
R1
K1
24 V≅
R1= R2=
Star-delta relay
MFT S21S
S - Star-delta
Control by Us via K1. After closing the K1 the star output
relay switches on. After expiry of the adjusted time t-star the
star output relay returns back to its passive status and the
adjusted time t-Y starts to run. After expiry of the time t-U
the delta output relay switches on. An interruption of Us
produces a time reset and the cycle restarts from the
beginning.
Function descriptions
K1
tU
t
Load limit curve
MFT S21S
20
30
40
50
0,2 0,5 1 2 5 10 200,1
100
200
300
Switching current [A]
Switching voltage [V=]
2 poles
ohmic load
2 contacts
in series
1 contact