Coupling links for control by PLC

For mounting on 3RT2 contactors

Surge suppression

The 3RH2924-1GP11 coupling link has an integrated surge suppressor (varistor) for the contactor coil being switched.

Mounting

The 3RH2924-1GP11 coupling link is mounted on the contactor coil size S0 using a coil connection module.

3RA28 function modules

For mounting on 3RT2 contactors and 3RH2 contactor relays

The function modules enable the assembly of starters and contactor assemblies for direct-on-line and star-delta (wye-delta) starting.

They include the key control functions required for the particular feeder, e.g. timing and electrical interlocking. The function modules that function as timing relays are mounted quickly and simply on SIRIUS contactors – without any great wiring effort. They enable both ON-delay and OFF-delay switching of contactors.

3RA27 function modules for IO?Link or AS-Interface

For mounting on 3RT2 contactors

The SIRIUS 3RA27 function modules enable the assembly of starters and contactor assemblies for direct-on-line, reversing and star-delta (wye-delta) starting without any additional, complicated wiring of the individual components.

They include the key control functions required for the particular feeder, e.g. timing and interlocking, and can be connected to the control system via either IO-Link or AS-Interface.