Used For Stop Category 0 / 1 - Siemens SIRIUS 3RT Manual

Employer's Liability Insurance Association / SUVA
In addition to the standards IEC 60947-4-1 and IEC 60947-5-1, the requirements of the
German Employer's Liability Insurance Associations or the Swiss Accident Insurance
Institute (SUVA) also apply in the case of safety circuits for the protection of personnel.
These requirements set stricter conditions for devices with mirror contacts or positively
driven contact elements. The basic SUVA requirement is that all auxiliary switches must be
mounted on the basic device at the factory in such a way that they cannot be removed.
Manual actuation of the contactor must not be possible.
A SUVAPro type-examination certificate confirms that the switching device meets the basic
health and safety requirements and that this requirement agreement has been assessed by
an accredited European Notified Body.
Note
The SUVA certificate is required if products or systems are operated in Switzerland.
All SIRIUS 3RH2 contactor relays (with at least 1 NC auxiliary contact) are tested according
to IEC 60947-5-1 and have possessed the SUVA type-examination certificate since product
launch.
All SIRIUS 3RT2 motor contactors (with at least 1 NC contact) are tested according to
IEC 60947-4-1 and can be supplied in accordance with SUVA requirements.
Thanks to use of a double bridge for the contacts, all 3RT2 motor contactors and
3RH2 contactor relays feature contact redundancy and optimization of the contact surface.
This crucially enhances the contactors' contact reliability.
The 3RT1 contactors are also available with non-removable lateral auxiliary switches.
2.4

Used for stop category 0 / 1

Used for stop category 0 / stop category 1
All SIRIUS 3RT1, 3RT2 and 3RH2 contactors with mirror contacts / positively driven contacts
are generally suitable for use in safety circuits according to stop category 0 / stop category 1.
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
Standards
2.4 Used for stop category 0 / 1
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