Professional Grade Siemens Q390H – 90A 3 Pole Miniature Circuit Breaker

Built for systems requiring higher fault tolerance, this 90A QPH series component delivers a 22kAIC interrupting capacity at 240VAC. It fits seamlessly into Siemens EQ, PL, ES, and Ultimate load centers for commercial or industrial use. As a thermal-magnetic unit, it provides standard long-time and instantaneous protection while serving as an excellent upgrade for legacy MP390 installations.