Use planning
4
4.1
Applications
Sectors
The 3RB24 solid-state overload relay for IO‑Link is suitable for customers from all industries who
want to ensure optimal current-dependent and temperature-dependent protection of their
electrical loads (such as motors) under normal starting and heavy starting conditions (CLASS 5
to CLASS 30), and also minimize project runtimes, inventories and energy consumption, and
optimize plant availability and maintenance management.
Application area
The 3RB24 solid-state overload relays for IO‑Link have been designed to protect three-phase
asynchronous motors and single-phase AC motors.
In addition to the protective function, these devices can be used in conjunction with contactors
as direct starters or reversing starters (star-delta start also possible) controlled via IO‑Link. This
makes it possible to control drives direct via IO‑Link from a higher-level controller, or on-site
using the optional hand-held operator panel, and also, for example, to return current values
direct via IO‑Link.
If single-phase AC motors are to be protected with the 3RB24 solid-state overload relay for
IO‑Link, the main circuits of the current measuring modules must be switched in series.
You can find more information in Chapter "Replacing the removable terminals (Page 74)".
SIRIUS 3RB24 electronic overload relay for IO-Link
Equipment Manual, 07/2022, NEB969165602000/RS-AA/003
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