The Square D QO 125 Amp 20-Space 20-Circuit Convertible Main Lug Indoor Load Center is UL listed for residential, commercial and industrial power distribution. This load center is built with a shielded, copper bus bar that is plated for reliability. QO load centers are tested and listed only for QO circuit breakers.
The Square D QO 100 Amp 8-Space 16-Circuit Fixed Main Lugs Indoor Load Center is UL listed for residential, commercial and industrial power distribution. This load center is built with a rugged themoplastic interior and an aluminum bus bar plated for reliability. QO load centers are tested and listed only for QO circuit breakers.
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