NIB – Square D – QOU350 – Unit Mount Circuit Breaker 3P 50 Amp 240Vac/48Vdc Circuit Breaker Type: Standard. Slotted box lugs, load side. Electrical Connection Mounting Mode: Unit mount. Slotted box lugs, line side. Range of Product: QOU. Line Rated Current: 50A. AWG Gauge: AWG 14.AWG 2 aluminum/copper. byJuly 3, 2026