Contact Service Life Of Auxiliary And Main Contacts; 3Rt2 Power Contactors (Sizes S00 To S3); Contact Service Life Of Auxiliary And Main Contacts (Sizes S00 And S0) - Siemens SIRIUS 3RT Manual

Configuration

6.16 Contact service life of auxiliary and main contacts

6.16 Contact service life of auxiliary and main contacts
6.16.1

3RT2 power contactors (sizes S00 to S3)

6.16.1.1

Contact service life of auxiliary and main contacts (sizes S00 and S0)

Contact service life of auxiliary contacts
This requires operating mechanisms that switch at
random, i.e. not synchronized with the phase angle of the
supply system.
The contact service life is essentially dependent on the
breaking current.
The characteristic curves apply to:
Integrated auxiliary contacts on 3RT20
•
Auxiliary switch blocks 3RH2911-., 3RH2921-. for
•
contactors size S00 and S0
Integrated auxiliary contacts (size S0) and contacts in the auxiliary switch blocks for contactors (size S00 and S0): 6 A
1)
Contacts in auxiliary switch blocks for contactors size S00 and S0: 6 A
2)
166
Legend for diagram:
I = Breaking current
a
I = Rated operational current
e
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006