Solid-State Switching Devices for Switching Motors

The new 3-phase solid-state contactors are, for example, used in conveyor technology applications for the switching and reversing of parcel conveyor belts or palleting machines. Also these devices offer a quiet switching behavior and are therefore suitable for all noise-sensitive applications.

Thanks to their integration in the SIRIUS modular system, the solid-state contactors can be easily extended to assemble complete motor feeders. The terminals in the main circuit are designed in a way which allows for the devices’ connection to a SIRIUS motor starter protector by means of a conventional link module. For a fast and compact assembly of fuseless motor feeders. Alternatively, also fused motor feeders can be realized by simply mounting a solid-state SIRIUS overload relay to the outputs of the solid-state contactor.

3-Phase Solid-State Contactors

These two-phase controlled, instantaneous switching solid-state contactors embedded in an insulated enclosure are rated up to 5.2 A in a width of 45 mm and up to 16 A in a width of 90 mm. Motors of up to 7.5 kW can be operated.

Advantages at a glance

Signaling of actuation via LED
Space-saving assembly thanks to compact design
Range of connection systems (screw terminal, spring
loaded terminal)
Simple plug-in connection of control cable
Safe from finger-touch without accessories

Siemens - Solid-State Reversing Contactor

3-Phase Solid-State Reversing Contactors

These two-phase controlled, instantaneous switching solid-state reversing contactors embedded in an insulated enclosure with a width of 45 mm cover motors up to 2.2 kW and the 90 mm width design serves motor applications up to 3 kW.

The integration of four current paths in a reversing circuit accommodated in a single enclosure turns this device into a particularly compact solution. Compared to conventional systems, for which two contactors are required, the three-phase reversing contactors facilitate space savings of up to 50% of the width.

Advantages at a glance