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The 905
Series Power Switches replace the obsolete 900 series Power Switch. the 905
Series remain zero firing, multiple voltage controllers that are
used for connecting line voltage potentials to resistive loads. Firing at zero
voltage crossing reduces Radio Frequency Interference (RFI).
It also
can be used in any connection arrangement or combination of phases without
regard to phase rotation. Power switch(es) can be used in three phase
applications, in the line, in the Delta, or in the Wye.
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