User Guide

3RT1 contactors/3RH1 control relays
SIRIUS System Manual
3-44 GWA 4NEB 430 0999-02 DS 01
Designs for frame sizes
S0 to S3
Contactors of frame sizes S0 to S3 are fitted on the front with an auxiliary
switch block with 2 NO contacts + 2 NC contacts. The separate series resis-
tor that is attached next to the contactor on the 35 mm rail has connecting
leads for contactor attachment. An NC contact of the auxiliary switch block
is required for the switch-over to hold-in coil level. A circuit diagram with the
terminal points is attached on each contactor.
Auxiliary contacts One NC contact of the auxiliary contacts is required for the series resistor.
The number of auxiliary contacts that are available beyond this is listed in
the selection and order data. With frame size S00, the auxiliary switch block
must be ordered separately.
An increase of the mountable auxiliary contacts is only possible with frame
size S00.
Installation The following types of installation are permissible for contactors and control
relays in ambient temperatures of up to 70 °C:
Frame size S00: installation in series
Frame sizes S0 to S3: The resistor block must be installed on the right side
of the contactor because of the connecting leads there.
Dimensions When the resistor is mounted, the contactors of frame sizes S0 to S3
become wider (see Section 3.6, Dimensioned drawings).
Circuit diagrams Frame size S00
Terminal markings in acc. with Terminal markings in acc. with
DINEN50012 DINEN50005
Cont actors 3RT1017-2K.42-0LA0 Control relays
3RH1122-2K.40-0LA0
Fig. 3-20: Contactors with an extended operating range, circuit diagrams
L+
L-
S1
R
V
NSB00559a
135
642
A2-
K1
K1
E1+
L+
L-
S1
R
V
NSB00560a
A2-
K1
K1
E1+
13
14
23
24
31
32
Series resistor R
V
attached
NC contact wired
2 NO + 1 NC contacts available