Configuration; Overview Of Applications For Contactors And Contactor Assemblies - Siemens SIRIUS 3RT Manual

Configuration

6.1

Overview of applications for contactors and contactor assemblies

The table below provides an overview of the most important applications for contactors and
contactor assemblies.
Application area
Switching motorized
loads
Switching resistive
loads
Changing the polarity
of hoisting gear motors
Switching in the
auxiliary circuit
Switching of capacitive
loads
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
Description and suitable contactor versions
Contactors for switching three-phase motors (utilization category AC-3)
3RT20 3-pole motor contactors
•
3RT233..4AA0 / 3RT234..4AA0 4-pole motor contactors
•
3-pole 3RT10 motor contactors
•
3-pole 3RT12 vacuum contactors
•
Contactors for switching resistive loads (utilization category AC-1)
3RT20 3-pole power contactors
•
3RT23 4-pole power contactors (4 NO contacts)
•
3-pole 3RT24 power contactors (3 NO contacts)
•
3RT25 4-pole power contactors (2 NO contacts + 2 NC contacts)
•
3-pole 3RT14 power contactors
•
Changing the polarity of hoisting gear motors or switching two separate loads.
3RT25 4-pole contactors (2 NO contacts + 2 NC contacts)
•
Switching devices for control and auxiliary circuits (utilization
categories AC-12/AC-15/AC-14/DC-12/DC-13).
3RH21 4-pole contactor relays
•
3RH22 8-pole contactor relays
•
Contactors for switching capacitive loads (utilization category AC-6b)
3RT26 3-pole capacitor contactors
•
6
67