Low Price Siemens JXD63B300H – 300A 3 Pole Molded Case Circuit Breaker

The JXD63B300H is a 3-pole, 300A molded case circuit breaker from Siemens’ Sentron series. Built for commercial and industrial power distribution, this JD frame breaker provides robust long-time and instantaneous (LI) protection for demanding electrical systems. It installs into Siemens P4, P5, S4, and S5 panelboards, along with compatible switchboards. Rated for 35kAIC at 480VAC, this breaker features a 100% continuous current rating, allowing you to utilize the full 300A capacity.