ZENITH ZGOG1BX12-BXXXX2XX ZTG OT 200A1PH SLD NEU N1 GENERAL PURPOSE COMMERCIAL AND INDUSTRIAL AUTOMATIC TRANSFER SWITCH 200 A, 1 PHASE (2 POLE), OPEN TRANSITION NEMA 1 ENCLOSURE 2 NO (NORMALLY OPEN) AND 2 NC (NORMALLY CLOSED) AUXILIARY