Schneider Electric EJB14030 Circuit Breaker 1 Pole

Schneider Electric's Square D EJB14030 is a 1-pole, 30 A miniature circuit breaker in the E-Frame family designed for 277 V AC applications. It features bolt-on mounting and is TAA-compliant for government and large-scale installations. The device is rated to interrupt up to 100 kA, delivering robust short-circuit protection for branch circuits in commercial and industrial panelboards. As part of the E-frame line, the EJB14030 uses a standard form factor common to Square D panel assemblies. The 1-pole configuration makes it suitable for protecting single-phase 277 V circuits, such as lighting or small power feeders in appropriate systems. With a thermal-magnetic trip mechanism, it provides reliable overcurrent protection in a compact package. The Square D brand, now part of Schneider Electric, has a long history of providing protective devices for North American electrical infrastructures. This model is available as a straightforward replacement or upgrade within existing Square D/E-Frame installations, ensuring consistent electrical characteristics with other EJB-series breakers.