Sale Square D FDA34040 – 40A 3 Pole Molded Case Circuit Breaker

Engineered for commercial and industrial environments, the FDA34040 provides reliable thermal-magnetic protection for three-phase systems. This 40A molded case circuit breaker features fixed long-time and instantaneous (LI) trip functions. Designed for Square D I-Line panelboards, the unit utilizes a plug-on mounting style. It serves as an exact replacement for older F-Frame installations and is superseded by the modern HDA36040. Rated 18kAIC at 480VAC, it includes a Visi-Trip indicator.