Siemens HF325N Fusible Safety Disconnect Switch

Siemens HF325N is a heavy‑duty fusible safety disconnect switch rated for 400 A at 240 V, 3‑phase, four‑wire (three hot conductors plus neutral). It comes in a Type 1 indoor enclosure (NEMA 1) and is part of the Siemens VBII family of safety switches. The HF325N is designed to accept Class R fuses with the appropriate HR656 fuse clips, enabling fuse-based circuit protection at the disconnect point. It offers a 200 kA short‑circuit interrupting rating at 240 V, supporting reliable fault clearance for feeders and motors. The 240 V, 3‑phase rating supports up to 125 horsepower for motors, making it suitable as a main disconnect or motor‑protection device in indoor industrial installations. With its heavy‑duty construction, the HF325N is intended for indoor service entrances and equipment protection in manufacturing and commercial facilities where a defined disconnect is required by electrical codes.