ABB TEYD1020B Bolt-On 1 Pole Circuit Breaker 120V AC

ABB TEYD1020B is a bolt-on, 1-pole molded-case circuit breaker engineered for compact protection in grounded 480Y/277 VAC systems, delivering 20 A with a thermal-magnetic LI trip and a slim 1-inch-wide per-pole TEY frame designed for bolt-on mounting in ABB ReliaGear Q-Line panelboards and compatible OEM equipment. It features load-lug terminals that accept Cu/Al conductors from #14 to #10, supports standard bolt-on configurations, and is UL-listed under the TEY/Q-Line family with an interrupting rating of 25 kAIC at 277/480 VAC (with other voltage variants described in the broader TEY family’s catalog). Optional load-side ring terminals can be added using suffix RC, expanding field wiring options. In ABB’s BuyLog and related catalogs, TEYD1020B is documented alongside TEYH1020B and TEYL1020B within the same bolt-on frame, underscoring the family’s versatility across voltage classes for reliable short-circuit protection in commercial panels and OEM assemblies.