Mounting
7.3 Mounting/Disassembly
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
Manual, 09/2016, A5E03656507420A/RS-AB/003
95
Solid state overload relays (S10 / S12)
Direct mounting on 3RT contactor (size S10 / S12)
The contactor/overload relay combinations in size S10 / S12 are designed for screw
mounting on a mounting plate.
The following illustration shows mounting of the 3RB2 electronic overload relay (sizes S10 /
S12) on the 3RT1 contactor (busbar connection) with the terminal covers and covers for box
terminal blocks available as accessories:
3RB2 electronic overload relay (busbar connection) installation
Slide the electronic overload relay onto the contactor from below.
Screw the electronic overload relay onto the contactor with the screws provided for this
As shown in the figure, slide the terminal covers for covering the busbars into the openings
provided on the box terminal block of the electronic overload relay and on the contactor.
As shown in the illustration, break a side section out of the terminal cover for covering the
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