Square D H324NRB Safety Disconnect Switch

Square D H324NRB is a heavy‑duty fusible safety disconnect switch rated for 200 A, three‑phase (3P), and four‑wire operation at 240 VAC with a 60 HP maximum motor rating. Housed in a NEMA 3R enclosure, it’s designed for outdoor or damp locations and can serve as a main or feeder disconnect in commercial or light industrial installations. The unit features a bolt‑on hub provision for wiring flexibility and accepts cartridge fuses in the H family (and compatible K/R types) to provide selective overcurrent protection. With its 3‑pole, 4‑wire configuration, it supports a neutral conductor for 4‑wire circuits and provides a clear, code‑compliant means to isolate power to motors and equipment in demanding environments.