Siemens SIRIUS 3RU2 - Terminal support for stand-alone assembly

Accessories
10.2 Terminal support for stand-alone assembly
SIRIUS Innovations - SIRIUS 3RU2 thermal overload relays / SIRIUS 3RB3 solid-state overload relays
84 Manual, 09/2014, A5E03656507420A/RS-AA/002
10.2
Terminal support for stand-alone assembly
10.2.1
Description
3RU21 thermal overload relays and 3RB30/3RB31 solid-state overload relays can also be
installed individually with the terminal supports for stand-alone assembly.
The terminal supports for stand-alone assembly are available for the sizes S00 and S0 in
screw-type and spring-loaded connection systems. In size S2, the terminal support for stand-
alone assembly is available in screw-type connection technology. A terminal support can be
mounted on the thermal overload relay as well as on the solid-state overload relay.
10.2.2
Mounting/Disassembly
The terminal supports can be snapped onto 35 mm DIN rails according to DIN EN 60715.
They can also be screw-mounted.
The figures below show how the terminal support for stand-alone assembly is mounted and
removed, based on the example of a 3RU21 thermal overload relay (size S0 and S2).
Table 10- 1 Mounting the terminal support (screw-type connection system) size S0
Step
Instructions
Figure
1 Guide the overload relay into the
terminal support from below.
2 Screw the contacts tight.
Check that the cables are clamped
tight.