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| 4-pole Contactors - Switching with SIRIUS - Siemens | 11/23/2008 0:02 PM | ||
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4-pole ContactorsIn addition to the 3RT13 4-pole contactors with 4 NO contacts to switch ohmic loads there are also the 3RT15 SIRIUS contactors with 2 NO +2 NC contacts. These are used for instance to change over the poles of crane motors, as brake contactor or to switch two loads separately from one another. |