Square D BDA34090Y Molded Case Circuit Breaker

Square D BDA34090Y is a 90-amp, three-pole molded-case circuit breaker from Schneider Electric's PowerPact B-Frame family (PowerPact B/PowerPacT B). It is rated for 480Y/277 VAC and features I-Line plug-in mounting for easy installation in compatible panels. This thermal-magnetic device provides distinct long-time and instantaneous trip functions to protect circuits from overloads and short circuits. The BDA34090Y carries an 18 kA interrupting rating at 480 VAC, with 25 kA rated at 240 VAC and 14 kA at 600 VAC for other voltages in the family. It supports line and load lug connections and is designed for industrial power distribution where reliable, selective overcurrent protection is required on 3-phase 480Y/277 VAC feeders. As part of the Square D B-Frame lineup, it is commonly used for feeder and branch-circuit protection in commercial and light industrial installations.