SIRIUS 3RU2/3RB3 overload relays
5.9 Accessories
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
527
5.9.3 Mechanical remote RESET (release slide)
5.9.3.1 Description
Preliminary observation: Mechanical remote RESET
A mechanical remote reset option is also available for thermal overload relays and solid-
state overload relays. There are two options for the mechanical remote RESET:
● Release slide
● Cable release with holder for built-in ov
erload relays which are hard to reach (Page 529)
Release slide
There is one release slide for thermal overload relays and one for solid-state overload relays;
both are compatible for use with all sizes. The release slide with holder and former is used to
activate the RESET from the control cabinet door; it is shortened to the required length. A
pushbutton with extended travel and an extension plunger for compensation of the distance
between the pushbutton and the relay's unlocking button are available for the release slide.
5.9.3.2 Mounting/Disassembly
The figure below shows how the release slide, the holder, the former, and the pushbutton
are mounted based on the example of a size S0 3RU21 thermal overload relay:
Prerequisite
Before the release slide can be mounted, the release slide and the optional extension
plunger have to be shortened to the required length.
Table 5- 24 Mounting the release slide
Step Operating instruction Figure
1 Attach the hook on the release slide to the
designated opening on the overload relay.
2 Fold the module up so that the locking latch
snaps into the overload relay.
1
2
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