Getting Started in minimum space

Motor Starter SIRIUS 3RM1 at the Hanover fair 2013

Getting started in the smallest of spaces is really easy with the SIRIUS 3RM1 motor starter. The following film shows how much space can be saved compared with conventional relay-contactor assemblies. It also shows the additional benefits offered by the new motor starters.


Does every millimeter count in your control cabinet? The solution: Motor switching and protection in a width of only 22.5 mm. Depending on its assembly, the motor feeder thus requires up to 75% less space in the control cabinet, making it even more efficient. This facilitates space savings compared to conventionally wired motor feeders. Furthermore, this eases the development of compact and modern systems and machines. SIRIUS 3RM1 motor starters are available as direct-on-line and reversing starters. They are suitable for the switching of small motors up to 3 kW

If you want fail-safe compact motor starters, they are now available. The SIRIUS 3RM1 Failsafe motor starters have certification in accordance with SIL3/ Pl 3 Cat. 4.

Space savings

Getting started in minimum space is really easy with the SIRIUS 3RM1 Motor Starter. This animation shows you just how much space can be saved in comparison to conventional relay/contactor assemblies.


Numerous innovations ease the new SIRIUS 3RM1 motor starters' handling. The resulting time savings enable you to focus on your core business.

Mounting is ever so easy: All functions are combined in one motor starter, doing away with the need for various devices such as contactors and overload relays. This results in reduced storage and commissioning costs. Furthermore, the motor starters feature the durable and energy-saving hybrid switching technology.

All motor starters are certified in accordance with IEC, CCC and UL. They are thus suitable for the international market as no country-specific versions are required. This minimizes ordering and storage costs and additionally eases the import and export business. To the top of the page


A special infeed system is available for SIRIUS 3RM1 motor starters. This ensures significantly eased main circuit wiring thanks to minimized wiring expenditures and time. Also maintenance works are considerably eased.

The motor starters are available with screw-type, spring-loaded and mixed connections. With mixed connections, you profit from the benefits of the screw-type and spring-loaded connections which simplify wiring in the main circuit as well as in the control circuit. To the top of the page


SIRIUS 3RM1 motor starters win iF product design award. An international panel of 49 judges was impressed by the design. The enclosure concept combines enhanced functionality with a slim design. It is also standard for all devices.

The enclosure concept scores with:

  • Needle-sharp laser labeling

  • Removable terminals and hinged covers

The winning enclosure is also used for several systems. Not only motor starters but also safety relays are housed in the same enclosure.