Motor starter Sirius 3RM1

The new Sirius 3RM1 motor starter from the Siemens Industry Automation Division offers a space-saving starter solution which combines two different connection technologies in a single device.

The dual connection facility simplifies engineering, maintenance and installation of the 3RM1 in the control cabinet. By offering a combination of push-in control circuit connection and screwtype main circuit connection, the Sirius 3RM1 motor starter affords extreme flexibility in different applications.

The benefit of this design for users: simpler implementation of specific assemblies in the control cabinet. If required, the detachable dual-connection technology terminals can also be individually exchanged, affording greater convenience when working with existing wiring installations.

The push-in alternative uses a springloaded mechanism for rapid connection without the need for tools – which cuts wiring work and expense to a minimum for control cabinet makers. The push-in method also ensures highly vibration- proof connections in the control circuit.

This eliminates the need for regular checking and tightening of the kind required with screw connections, significantly reducing the maintenance load. In the main circuit, screw connection technology allows the use of the threephase infeed system. The infeed system quickly and simply links groups of motor starters up to a total current of 25 amperes.

The special shape of the busbars combined with the use of screw connection technology allows individual motor starters to be quickly and simply removed from the feeder network or reintegrated as required. This also helps to increase system availability.