Solid-State Switching Devices General data ■ Overview The most reliable solution for any application Compared to mechanical controlgear, our SIRIUS 3RF2 solid- state switching devices stand out due to their considerably lon- ger service life. Thanks to the high product quality, their swit- ching is extremely precise, reliable and, above all, insusceptible to faults. With its variable connection methods and a wide spread of control voltages, the SIRIUS 3RF2 family is universally applicable. Depending on the individual requirements of the ap- plication, our modular controlgear can also be quite easily ex- panded by the addition of standardized function modules.
Also for switching motors In order to achieve higher productivity, the switching frequency is continuously increased. It is no problem for our SIRIUS solid- state contactors to switch motors. With induction motors up to 7.5 kW, they can reliably withstand even the highest switching frequencies. Even a continuous change in the direction of rota- tion is possible with the solid-state reversing contactors. Both versions can be perfectly combined with components from the SIRIUS modular system. Connecting with SIRIUS motor starter protectors or SIRIUS overload relay can be implemented without any further steps.
SIRIUS 3RF2 solid-state switching devices The 3RF solid-state switching devices reliably switch a wide range of different loads with alternating voltages in 50 and 60 Hz systems. Always on the sunny side with SIRIUS Solid-state switching devices for resistive loads • Solid-state relays • Solid-state contactors • Function modules Because SIRIUS 3RF2 offers even more: • The space-saving and compact side-by-side mounting en- sures reliable operation up to an ambient temperature of +60 °C. • Thanks to fast configuration and the ease of mounting and start-up, you save not only time but also expenses.
Solid-state switching devices for switching motors • Solid-state contactors • Solid-state reversing contactors Connection methods SIRIUS 3RF2 – for almost unending activity The devices are available with screw terminals (box terminals), spring-type terminals or ring terminal lugs. Conventional electromechanical controlgear is often overtaxed by the rise in the number of switching operations. A high swit- ching frequency results in frequent failure and short replacement cycles.
However, this does not have to be the case, because with the latest generation of our SIRIUS 3RF2 solid-state swit- ching devices we provide you with solid-state relays and contac- tors with a particularly long endurance – for almost unending ac- tivity even under the toughest conditions and under high mechanical load, but also in noise-sensitive areas. Screw terminals Spring-type terminals Ring terminal lug connections Proved time and again in service These connections are indicated in the Technical specifications by orange backgrounds. SIRIUS 3RF2 solid-state switching devices have firmly establis- hed in industrial applications.
They are used above all in appli- cations where loads are switched frequently – mainly with resis- tive load controllers, with the control of electrical heat or the control of valves and motors in conveyor systems. In addition to its use in areas with high switching frequencies, their silent swit- ching means that SIRIUS is also ideally suited for use in noise- sensitive areas, such as offices or hospitals. 5 Siemens · 2009