Product Overview

3RT1 contactors/3RH1 control relays
SIRIUS System Manual
3-84 GWA 4NEB 430 0999-02 DS 01
Frame sizes S6 to S12 (3RT10/3RT12/3RT14)
Table 3-37: Maximum number of auxiliary contacts
Note to the mounting of auxiliary contacts on S6 to S12
With using the mechanical interlock 3RA1954-2A:
• for contactors with conventional / electronic coil 3RT1...-.A/N: an addi-
tional auxiliary contact block can be mounted between the contactors
• for contactors with remaining lifetime indicator RLT 3RT1...-.P/Q:
the left mounted auxiliary contact block of the right contactor must be
removed.
Manual activation of the auxiliary contacts with S6 to S12
Contactors with 4 main contacts and capacitor-switching contactors
Operation type Contactor type at operational range listed below
0.8 x U
Smin
0.85 x U
Smin
conventional 3RT1...-.A Air-break contactors 3RT10/14 8, of which 4 NC max. 9, of which max 6 NC
Vacuum contactors 3RT12 8, of which 4 NC max. 8, of which max 6 NC
electronic 3RT1...-.N Air-break/Vacuum contactors 8, of which 4 NC max.
with RLT 3RT1...-.P/Q Air-break contactors 3RT10/14 8, of which 4 NC max.
3RT10/14 air-break contactors can
be activated for test purposes of
the side mounted auxiliary contact
by pushing the front side auxiliary
contact fixture/contact position indi-
cator.
By doing this the main contacts
would also touch, without resulting
in contact resilience.
Attention
It must be certain that power to the
contactor is disconnected!
S00 S0 S2/S3
Contactors with
4 main contacts
4 auxiliary
contacts
Maximum of 2 auxiliary
contacts
(attached at the side or
snapped on at the top)
Maximum 4 auxiliary
contacts
(attached at the side or
snapped on at the top)
Capacitor-switch-
ing contactors
An additional 2-pole auxiliary switch block on each side
(3RH1921-1EA..: 2 NO, 2 NC or 1 NO + 1 NC contact)
Table 3-38: Possible auxiliary switch combinations with 4-pole/capacitor-switching contactors