Square D FI36050 – 50A 3 Pole Molded Case Circuit Breaker Same Day Shipping

Built for commercial and industrial power distribution, the Square D FI36050 is a 50-amp, 3-pole current-limiting MCCB. Designed specifically for Square D I-Line panelboards and switchboards, this F-Frame breaker utilizes a secure plug-on mounting style. For new installations or upgrades, it has been replaced by the HRA36050 model. The current-limiting design significantly reduces let-through energy during short circuits, protecting downstream components from thermal and magnetic stress.