Square D by Schneider Electric QO1DM10030TRBR 30-Amp Generator Main Breaker Outdoor Manual Transfer Switch with 30-Amp Twist-lock Receptacle<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Use to connect to a standby power source to as many as 8 circuits</li><li>Changes from utility power to a standby source with the flip of 2 QO main circuit breakers</li><li>Includes a 30 Amp 4-Watt L14-30P twist-lock receptacle in the bottom end wall for direct connection from a generator cord supply</li><li>Single phase， 120/240 VAC， for outdoor use</li><li>Mechanical interlock helps ensure that only 1 main circuit breaker is in the on position at any time</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51jzEFwFOnL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41coWHEtYeL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41cNwXXOarL.jpg" noproxy>