Cutler-Hammer FD3020 U is a three-pole circuit breaker rated for 20 A at up to 600 V, designed for use in three-phase electrical systems. This FD3020 U unit features a blue label designation, and is intended to provide protection for three-phase circuits in panelboards and industrial equipment. Suitable for commercial or light industrial power distribution, it safeguards feeders and branch circuits from overloads and short circuits in 3‑phase installations.
