Square D FA36050 I-Line 3-Pole Circuit Breaker

Square D FA36050 I-Line 3-Pole Molded Case Circuit Breaker is a 50-amp, 600-volt protective device built for 3-phase distribution in Square D I-Line panelboards. Its plug-on I-Line design simplifies installation in compatible enclosures and supports a line-side I-Line connection with three poles to protect three-phase circuits. The thermal-magnetic trip mechanism provides overcurrent protection for motor loads, feeders, and branch circuits, with an interrupting capacity of 14 kA at 600 V, ensuring rapid interruption on faults without nuisance tripping. On the load side, the lugs accept up to 14–1/0 AWG aluminum or copper conductors, giving flexibility for common field wiring. As part of Square D’s FA/I-Line family, FA36050 is specified for use in installations that require a 3-pole, 50 A protective device in 600 V systems, balancing reliable protection with a compact form factor suitable for industrial control panels and electrical distribution equipment. This model is intended for use in applications where a 50 A, 600 V, three-phase MCCB is appropriate, including motor feeders and distribution circuits in commercial and light-industrial environments.