Schneider Electric QMB-364 Panelboard Fusible Switch

Schneider Electric's QMB364 fusible panelboard switch is a 200 A, 600 V three‑pole fusible switch designed for use as a main disconnect or feeder switch in QMB fusible panelboards. Housed in a 9‑inch, NEMA 1 enclosure, this unit accepts Class R fuses and is rated for up to 25 hp at 600 V, making it a compact solution for medium‑duty distribution applications. Schneider Electric has discontinued the QMB364 as of June 8, 2026, with end‑of‑standard‑service on December 31, 2026. For a higher‑horsepower option in the same family, the QMB364W switch unit offers up to 150 hp at 600 VAC in a 9‑inch, 200 A, 3‑pole form.