"This Generac RTS Automatic Transfer Switch is designed for a wide variety of applications that require up to 200 Amps. Type N Normal Standard Switch is for use in custom installations and installations with a subpanel. For use with Generac standby generators. U.S.A. Amps 200, Volts 120/208. 200 Amp 120/208V 3 phase Type N Dual-coil design 2-pole 250V rated contactor UL listed NEMA 3R enclosure"