Siemens HF321NR - 30A, 3-Pole, Fused Disconnect Switch

The Siemens HF321NR 30A, 3-Pole Fused Disconnect Switch is built for performance in demanding industrial and commercial environments. When safety and reliability matter, this disconnect switch delivers clear, dependable electrical isolation to protect personnel and equipment during maintenance and service operations.

Designed to integrate with standard control and power distribution systems, the HF321NR supports proper lockout/tagout procedures, giving technicians a secure way to de-energize circuits before work begins. Its fused design ensures reliable disconnection under load, helping to minimize arc energy and provide a controlled shutdown when fault currents occur. Built for long-term durability, this switch is a practical, trusted choice for ongoing facility uptime and safe operations.

Key advantages

• 30 Ampere rating for precise, controlled disconnection on 3-phase systems
• 3-Pole configuration to accommodate common three-phase electrical layouts
• Fused construction that enhances protection and safe isolation during maintenance
• Supports lockout/tagout (LOTO) procedures to safeguard personnel
• Durable, reliable performance designed for daily industrial use

Specifications at a glance

• Amperage Rating: 30A
• Number of Poles: 3-Pole
• Product Type: Fused Disconnect Switch
• Brand: Siemens
• Model: HF321NR

Ideal use cases

• Mid-to-large industrial panels and motor control centers requiring safe, code-conscious isolation
• Maintenance shutoffs for critical machinery where a controlled, under-load disconnect is essential
• Commercial facilities with 3-phase distribution lines that demand reliable hand-off points for service crews

Choose the Siemens HF321NR when you need a dependable, purpose-built solution for safe electrical isolation that stands up to daily use in busy environments. It’s engineered to support safety standards, protect personnel during maintenance, and keep your operations moving smoothly.