Premium Square D Q12125 – 125A 2 Pole Molded Case Circuit Breaker

Operating as a 2-pole thermal-magnetic device, the Q12125 delivers 125 amps of protection for legacy Square D systems. Built for residential and commercial distribution, it provides reliable overload defense for 120/240VAC networks. This plug-on MCCB mounts into Square D Q1 and NQO panelboards. When replacing this unit in NQO panels, the newer QO2125 substitute requires an SK5669 adapter. Rated at 10 kAIC, it features a Visi-Trip indicator for quick fault identification.