Siemens HF321NR - 30A, 240V, 3-Phase, Disconnect Switch

The Siemens HF321NR is a rugged 30A, 240V, 3-Phase disconnect switch designed for reliable on/off isolation and overcurrent protection in demanding industrial and commercial environments. Built to withstand daily wear, this compact, maintainable fusible switch helps minimize downtime while keeping equipment safely de-energized during maintenance and servicing.

Key specifications

• Model: HF321NR
• Amperage: 30A
• Voltage: 240V
• Phase: 3-Phase

What it does for your operation

The HF321NR provides a clear, reliable point of isolation for motors and branch circuits, enabling quick startup and safe shutdown while protecting circuits from overloads. Its compact footprint accommodates tight control rooms and panel spaces, and its maintainable design supports straightforward servicing and part replacement—helping you keep lines up and running with minimal downtime.

Ideal applications

• Motor disconnects for industrial equipment
• Panelboards requiring an accessible, dedicated disconnect
• Branch circuit protection where a compact, maintainable fusible switch is needed

Why choose the Siemens HF321NR

Siemens brings decades of electrical engineering experience to this 3-Phase disconnect switch. The HF321NR combines a robust build with a compact, user-friendly form factor, enabling reliable isolation in space-constrained environments. This Siemens solution is designed to deliver consistent performance in demanding industrial and commercial applications.

Maintenance and safety considerations

For long-term reliability, ensure proper installation for 240V 3-Phase service and schedule routine inspections of connections and seals. Keep the disconnect in a clean, dry environment and address worn components promptly to maintain safe, dependable operation.