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The Square D QO 200 Amp 40-Space 40-Circuit Convertible Main Breaker Indoor Load Center is UL listed for residential, commercial and industrial power distribution
Includes a combination flush/surface indoor cover and factory-installed QOM2200VH main breaker
Accommodates plug-on secondary surge arrestor (sold separately) and is built with a shielded, copper bus bar that is plated for reliability that is tested and listed only for QO circuit breakers