11CB3H

The 11CB3H is a 3-pole circuit breaker from Siemens, designed to deliver overcurrent and short-circuit protection for commercial and light industrial power distribution systems. Rated for 18 at 575, it serves as a reliable protective device for dedicated branch circuits, heavy equipment, and power distribution feeders requiring continuous electrical safety. Electrically, the 11CB3H utilizes a thermal-magnetic trip unit that provides comprehensive protection against thermal overloads and sudden fault currents. Its dual-action mechanism responds effectively to sustained overcurrent conditions to prevent conductor overheating while offering fast-acting magnetic protection during severe short circuits, safeguarding downstream electrical equipment and panel wiring. Mechanically, the 11CB3H features a high-grade molded case housing built to withstand the physical demands of commercial and industrial environments. It integrates cleanly into compatible Siemens panelboards and enclosures, offering a compact footprint for optimal panel space utilization. Fully UL listed, the 11CB3H provides a reliable, long-term solution for new electrical installs, control panel builds, or direct maintenance replacements. Purchase the 11CB3H at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers from manufacturers like Siemens, Eaton, Cutler-Hammer, and Schneider Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.