Attachable Auxiliary Switches For Extending The Auxiliary Contacts - Siemens sirius System Manual

3RT1/3RH1 contactors

3.4.1 Attachable auxiliary switches for extending the auxiliary contacts

Integrated auxiliary
contacts
Auxiliary switch blocks
Formats
1-pole/2-pole auxiliary
switch blocks
3-52
Frame size S00
The contactors of frame size S00 have an auxiliary conducting path inte-
grated in the basic unit.
Frame size S0 to S3
The contactors of frame sizes S0 to S3 do not have an integrated auxiliary
conducting path in the basic unit.
Auxiliary switch blocks for extending the auxiliary contacts are available with
screw-type or Cage Clamp terminals to attach to contactors to switch
motors. They are available in the following formats:
• At the front 1 to 4-pole for frame sizes S00 to S3
• At the side: 2-pole for frame sizes S0 to S3
Different auxiliary switch blocks can be added to the 3RT1 basic units,
depending on the application:
The following can be snapped onto the front of the contactors:
• Frame sizes S00 to S3: a 4-pole auxiliary switch block
or
• Frame sizes S0 to S3: up to four 1-pole auxiliary switch blocks
Frame sizes S0 to S3
If the depth of the installation space is limited, 2-pole auxiliary switches can
be attached on the right and left side in frame sizes S0 to S3.
If 1-pole auxiliary switch blocks are used, note the location ID on the contac-
tor.
1 or 2-pole auxiliary switch blocks that can be connected from above or
below make the wiring simple and straightforward when setting up feeders.
These auxiliary switch blocks are only available with a screw-type terminal.
We recommend with the circuit breaker/contactor combination that you use
auxiliary switch blocks that are connected from below. In the case of the
contactor/overload relay combination, an auxiliary switch connected from
above is more suitable.
SIRIUS System Manual
GWA 4NEB 430 0999-02b