Product Overview

3RT1 contactors/3RH1 control relays
SIRIUS System Manual
3-80 GWA 4NEB 430 0999-02 DS 01
3.4.1 Attachable auxiliary switches for extending the auxiliary contacts
Integrated auxiliary
contacts
Frame size S00
The contactors of frame size S00 have an auxiliary contact integrated in the
basic unit.
Frame size S0 to S3
The contactors of frame sizes S0 to S3 do not have an integrated auxiliary
contact in the basic unit.
Auxiliary switch blocks
Formats
Auxiliary switch blocks for extending the auxiliary contacts are available with
screw-type or Cage Clamp terminals to attach to contactors. They are avail-
able in the following formats:
• At the front: 1 to 4-pole for frame sizes S00 to S12
• At the side: 2-pole for frame sizes S0 to S12
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 S12: a 4-pole auxiliary switch block
or
• Frame sizes S0 to S12: up to four 1-pole auxiliary switch blocks
Frame sizes S0 to S12
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 S12.
If 1-pole auxiliary switch blocks are used, note the location ID on the contac-
tor.
1-pole/2-pole auxiliary
switch blocks
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/MSP and 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 con-
nected from above is more suitable.