User Guide
Table Of Contents
- 3 3RT1 contactors/ 3RH1 control relays
- 3.1 Specifications/regulations/approvals
- 3.2 Device description
- 3.3 Application and areas of use
- 3.3.1 3RT10 contactors with 3 main contacts for switching motors
- 3.3.2 3RT14 contactors with 3 main contacts for switching resistive loads (AC-1)
- 3.3.3 3RT12 Vacuum contactors
- 3.3.4 3RT13 and 3RT15 contactors with 4 main contacts
- 3.3.5 3RT16 capacitor contactors
- 3.3.6 Contactors with an extended operating range
- 3.3.7 3RH1 control relays
- 3.3.8 3RT10 contactor relays for switching motors (interface) and 3RH11 control relays for switching auxiliary circuits
- 3.3.9 3RA13 Contactor combinations for reversing
- 3.3.10 3RT14 Wye-delta combinations
3RT1 contactors/3RH1 control relays
SIRIUS System Manual
3-50 GWA 4NEB 430 0999-02 DS 01
3.3.9 3RA13 Contactor combinations for reversing
3RA13 reversing contactor combinations are available pre-assembled from
the factory or as components for self-assembly
• S00 to S3: pre-assembled from the factory or as kit for self-assembly
Frame sizes S2 and S3 are delivered already mounted on a base plate.
• S6 to S12 as a kit for self-assembly
The same accessories can be used as for the basic contactors of the corre-
sponding frame size (see Section 3.4).
For motor protection an overload relay must be attached.
4-pole contactor combinations for reversing can be put together in frame
sizes S0 and S2..
Fig. 3-25: Fully assembled contactor combination for reversing (frame sizes S00 and S0)
Approvals The s and u approvals only apply to complete contactor combinations and
not to combinations that have been field assembled from separate compo-
nents.
Switch-over time If the contactors are interlocked by means of their auxiliary switches (electri-
cal interlocking) or by mechanical interlocking, there is no overlapping of the
contacts and the arcing time between the contactors at switch-over.
The switching times of the contactors are not affected by the mechanical
interlock.
Note
At voltages of >500 V a switch-over pause of 50 ms must be included.
AC-operated 3RT10 contactors in reversing or Dahlander mode require an
NC contact interlock and a switch-over pause of 50 ms.
1
2
➀
1
2
3RU1.1
3RU1.2
S00 S0