Square D QO340VH – 40A 3 Pole Miniature Circuit Breaker Must Have

Part of the QO series, the Square D QO340VH is a 40-amp, three-pole miniature circuit breaker designed for residential, commercial, and industrial applications. It provides robust thermal-magnetic overcurrent protection for 240VAC electrical systems. This breaker snaps securely into standard Square D QO load centers and NQ panelboards. Differentiating itself with a high interrupting capacity of 22kAIC, it also includes the Visi-Trip indicator to quickly identify tripped circuits.