Square D,LD CTR QO MB 240V 200A 1PH 40SP NEMA 3R,#4 to 250 AWG/kcmil (Al/Cu),1-Phase,120/240 Vac,200A,22kA,3-Wire,40,Convertible Mains - Breaker,Designed to meet residential, commercial and industrial requirements to protect electrical systems, equipment and people.,Load Center,NEMA 3R,Order separately,QO,QO,UL Listed