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Product description
3.1
Properties
Solid-state overload relay for IO-Link
The solid-state overload relay, comprising the 3RB24 evaluation module and a 3RB29 current
measuring module, protects electrical equipment (e.g. three-phase motors) with two different
protection mechanisms: overload protection and thermistor protection. Ground fault detection
can also be enabled via IO-Link.
In conjunction with the 3RT contactors, the solid-state overload relay for IO‑Link can be used as
a direct-on-line starter, reversing starter or, with the help of an additional circuit, as a star-delta
(wye-delta) starter. It is possible to read out diagnostics data, such as the current, via IO‑Link and
to further process this data in the higher-level controller.
SIRIUS 3RB24 electronic overload relay for IO-Link
Equipment Manual, 07/2022, NEB969165602000/RS-AA/003
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