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Siemens

Contactors for Switching Motors

(Air and Vacuum Contactors)

The three-pole 3RT10 contactors are admirably suited for one of the most generally encountered applications – switching 3-phase motors. The complete power range from 3 to 250 kW/400 V, for AC as well as DC operation, is covered by just seven sizes. For applications where an extremely high electrical service life is important, for heavy-duty starting or for applications with 1000 V the 3RT12 vacuum contactors are the right choice.

three-pole 3RT10 contactors
three-pole 3RT10 contactors

SIRIUS 3RT contactors in sizes S6, S10 and S12 offer you flexibility unknown up to now: coils can be lifted out and replaced in the fitted contactor without tools or removing the main wiring.


SIRIUS 3RT contactors
SIRIUS 3RT contactors

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