DC1-127D0FB-A20CE1 is an Eaton electrical circuit breaker that is part of the DC1 Series of smart circuit breakers. It has a nominal voltage of 120/240 VAC, with a maximum voltage of 240 VAC and a current rating of 20A. It has two 1-inch poles and a single-pole trip. The breaker also features a thermal-magnetic trip curve and integral thermal overload. It provides overcurrent, short circuit and ground fault protection, with adjustable trip characteristics to suit a wide range of applications. The breaker is designed for use in residential, commercial, and industrial environments and is UL 489 compliant.