ZENITH AUTOMATIC TRANSFER SWITCH, ZTGSE, ZTGSE0A00040E GENERAL PURPOSE COMMERCIAL AND INDUSTRIAL AUTOMATIC TRANSFER SWITCH 400 A, 3 POLE, 120/240 V, 3 PHASE, 4 WIRE, 60 HZ (ZVC38) ZTGSE - OPEN TRANSITION OPERATION UTILITY TO GENERATOR-AUTO TRANSFER APPLICATION 400 AMP - 600AF/400AT SERVICE ENTRANCE WCR-50KA@480V UTILITY MAIN BREAKER NEMA 3R ENCLOSURE (ZEC3ROEA)