Square D QO 100/20 Amp Main Breaker Generator Panel Transfer Kit

Use to connect to a standby power source to as many as 8 circuits. Changes from utility power to a standby source with the flip of 2 QO main circuit breakers. Aluminum bus. Single phase. 120/240 Volts. For outdoor use. Mechanical interlock helps ensure that only 1 main circuit breaker is in the on position at any time. Accepts up to 8 QO circuit breakers (sold separately). Includes a 20 amp 4-watt L14-30P twist-lock receptacle in the bottom end wall for direct connection from a generator cord supply.