Siemens SIRIUS 3RU2 Manual page 160

Dimension drawings (dimensions in mm)
C.2 Dimension drawings for 3RB30/3RB31 solid-state overload relays
3RB3.3.-..B0 (S2, screw connection, contactor mounting)
Figure C-21 3RB3.3.-..B0
3RB3.3.-..B0 (S2, screw connection, mounting on stand-alone assembly support)
Figure C-22 3RB3.3.-..B0 and 3RU2936-3AA01
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SIRIUS Innovations - SIRIUS 3RU2 thermal overload relays / SIRIUS 3RB3 solid-state overload relays
Manual, 09/2014, A5E03656507420A/RS-AA/002