Feeder Plug-in Circuit Breakers (THQL) are high-quality, compact circuit breakers designed to maximize panel space usage, allowing the installation of smaller load centers to save space and costs in both new installations and service upgrades. THQL breakers comply with UL 489 standards, are rated for 60°C/75°C conductors, and feature quick-make/quick-break mechanisms with box-type terminals. Copper-to-copper connections with corrosion-resistant tin-plated stabs ensure reliability. Each breaker exceeds UL, NEMA, ANSI, and CSA requirements, and the handle trips to a center position, clearly indicating a tripped breaker.