THQL1145

The THQL1145 is a ‑pole,  amp thermal‑magnetic molded‑case circuit breaker originally developed by General Electric (GE) as part of the THQL family for reliable branch‑circuit protection. Following ABB’s acquisition of GE Industrial Solutions, the THQL line — including the THQL1145 - is now manufactured and supported by ABB, ensuring continuity for legacy applications and new installations. The THQL1145 is designed for 120 VAC service and is commonly used in residential, commercial, and light‑industrial load centers where dependable overcurrent protection is required for individual branch circuits such as lighting, receptacles, and control circuits.

Electrically, the THQL1145 employs a thermal‑magnetic trip mechanism that combines a heat‑sensitive overload element with a magnetic short‑circuit response, providing both long‑time overload protection and rapid fault clearing. It is UL 489 listed and typically rated for a {aic rating} interrupting capacity. The breaker’s  amp rating places it in the range suited for general‑purpose protection of branch circuits where moderate sustained loads and occasional inrush currents occur without nuisance tripping.

Mechanically, the THQL1145 features a robust molded case and a bolt‑on mounting style, which ensures secure attachment to compatible panelboard buses such as GE/ABB PowerMark Gold and related load center architectures. Its manual toggle actuator provides straightforward ON/OFF control and facilitates quick resets after trip events. Because ABB continues to produce the THQL line with the same dimensions and electrical characteristics as the legacy GE design, the THQL1145 is a direct replacement option for installers working on existing infrastructure as well as a specified breaker for new panel builds where GE/ABB compatibility is required.

Purchase the THQL1145 at Electrical.com, your reliable partner for industrial and commercial electrical products including circuit breakers, panel boards, and accessories. Our selection includes manufacturers like General Electric and ABB, backed by a dedicated sales team ready to assist with technical questions, product selection, and support.