This Square D 80 circuit 200 Amp combination generator panel box with 36 circuit back up combines a service entrance loadcentre with a built-in large capacity generator panel for easy installation and convenience. It includes a factory installed 200 Amp main breaker with two factory installed 60A 3 pole main breakers. User can manually switch from utility power to stand-by generator power in seconds. Suitable for generators having either bonded or unbonded neutral conductors, this is a Type 1 indoor enclosure with surface/flush mounted trim. Measures 38" H x 14.25" W x 3.75" D.