Siemens HF221N

Siemens HF221N is an enclosed, heavy‑duty low‑voltage safety switch (VBII series) designed to provide fusible two‑pole isolation for 240 VAC circuits in indoor industrial environments. This 2‑pole, 3‑wire device uses two fuses and a neutral terminal for control circuits, and it is housed in a NEMA 1 indoor enclosure suitable for panel mounting. It is rated for 240 V AC input (50/60 Hz) with a 250 V DC capability, supports 2‑ or 3‑point mounting, and employs a DPST contact form to reliably switch the protected load. Typical applications include motor control, main disconnects, and safety isolation within control panels, machinery, and distribution enclosures where a fusible safety switch is required. The HF221N is built for indoor use and is compatible with Siemens fuse kits and optional auxiliaries to tailor control circuits, enabling straightforward integration into industrial electrical installations and power‑distribution setups.