Single phase, 2 spaces, 4 circuits, 120/240 Volts. 10,000 AIR. Factory installed main breaker. Additional spaces allow connection of external circuits such as yard lights. One 1-1/4" No. HS125 hub included. Normally used as a means of disconnecting powerto a mobile home panel, but also used as a disconnect for houses. Aluminum bus bar insulates and secures interior. Gray enamel finish. Pole mountable. U.L. Listed for use as service entrance equipment. Ten Year Limited Warranty.