GPAC20LLA is a high-voltage, Indoor/Outdoor Air Circuit Breaker, 30-1200 amp, 600 VAC that is manufactured by General Electric. It is used in a variety of applications, such as medium-voltage power distribution, commercial and industrial applications, motor control centers, and power factor correction. This breaker is UL, CSA, and NEMA approved, and is compliant with NEMA AB4-2009 National Electrical Code standards. It comes in circuit breakers with either mechanical interlocks or pluggable trip units. It also comes with a wide range of accessories, such as current transformers, power circuit breakers, and motor control centers.