Siemens HF365NA Fusible NEMA 1 Industrial Safety Switch

Siemens HF365NA is a 400 A, 600 V fusible heavy‑duty safety switch in a NEMA 1 indoor enclosure, designed to act as a service disconnect or feeder for three‑phase power in industrial environments. This three‑pole, fused disconnect is built for robust indoor installations and is part of Siemens' US2 Low Voltage Circuit Protection family. For a complete 400 A fused assembly, it is compatible with 400 A line and load bases such as HFB65A (Line Base, Fused 400 A) and HBB65A (Load Base, Fused 400 A). The HF365NA is rated for 600 VAC operation, delivering reliable isolation and switching for motors, pumps, conveyors, compressors, and other heavy‑duty loads. In practice, it provides convenient, code‑compliant disconnecting means in industrial plants and facilities that require a durable, easily serviceable safety switch with fused protection.