Federal Pacific Electric NEF42020 U Circuit Breaker

The Federal Pacific Electric NEF42020 U is a 2-pole, 20-amp, 480-volt circuit breaker designed to protect electrical circuits by interrupting fault current. In systems that operate at 480 volts, a two-pole device like this simultaneously disconnects both hot legs to prevent dangerous imbalances and equipment damage. The NEF42020 U model carries a 20A rating, meaning it will trip to open the circuit when current exceeds 20 amperes, helping to prevent overheating of conductors and downstream devices. This unit is intended for use in electrical distribution setups that require 2-pole protection for 480V circuits; it is part of Federal Pacific Electric's NEF line and is identified by the NEF42020 U designation. Use cases include protecting feeders and branch circuits in commercial or industrial panels where 480V operation is specified and a two-pole breaker is required, providing a reliable method to isolate a fault condition and restore safe operation after tripping.