Check the listing for details. Reliance Controls 30 A 240 V 2 space 6 circuits Surface Mount Generator 306CRK. Condition: New. Listed at 368.95 USD. The Pro/Tran 2 is the next generation of Load side manual transfer switch by Reliance Controls. These indoor surface mount transfer switches are designed for fast installation in residential and commercial applications. The 16-inch flexible conduit whip attaches easily to a knockout on the load center and all factory wires are clearly marked and colored for identification. Simply select the circuits needed in an emergency and connect them to the Pro/Tran 2 wire leads as instructed in the manual. Pro/Tran 2 transfer switches feature a rugged powder-coated steel cabinet with six combination 1/2 inch and 3/4 inch knockouts and 1 inch interchangeable circuit breakers. The 1 inch breakers allow a larger circuit size (max of 1 x 30 ampere double-pole) and installation of AFCI and GFCI breakers.