Schneider Electric H321N Fusible Disconnect Switch

Schneider Electric H321N is a heavy‑duty fusible safety switch configured as a 3‑pole, 4‑wire disconnect rated for 30 A at 240 VAC, designed as a single‑throw device with a neutral. Encased in a NEMA 1 indoor enclosure, it supports up to 7.5 hp at 240 VAC (and a 250 VDC rating for compatible loads), making it a compact solution for isolating small 3‑phase motors and equipment. As a fusible disconnect, it accepts field‑installed fuses to provide protection for the circuit; short‑circuit current ratings vary with fuse configuration, with sources listing around 10 kAIC to 200 kAIC depending on the fuses used. This model is part of Schneider Electric’s Square D heavy‑duty safety switch family, offering robust construction and straightforward wiring for service disconnects and isolation in electrical installations requiring a dedicated 3‑phase 30 A disconnect.