Thomas & Betts TBBQ220250 Quadplex Circuit Breaker

The Thomas & Betts TBBQ220250 Quadplex Circuit Breaker delivers thermal‑magnetic overcurrent protection for two independent 2‑pole circuits in the space of two standard breaker positions, designed for 120/240 VAC load centers and panelboards. It combines one 2‑pole 20 A circuit and one 2‑pole 50 A circuit with independent trip operation and a CTL rejection tab for CTL panels, rated 10 kA interrupting capacity. This plug‑in, plug‑on device accepts #14–4 AWG copper or aluminum conductors and is compatible with Thomas & Betts / ABB Type BR load centers. Common applications include HVAC systems, electric water heaters, air conditioning units, dryers, and other 120/240 VAC residential and commercial circuits; it weighs about 0.75 lb and carries UL 489 listing and Federal Specification W‑C375 compliance.