Siemens DTNF322 - 240V, 3-Pole, Double-Throw, Safety Switch

Meet the Siemens DTNF322 240V, 3-Pole, Double-Throw Safety Switch—a rugged, dependable safety device engineered for demanding industrial and commercial environments. It delivers crisp on/off isolation alongside reliable overcurrent protection, helping protect equipment, processes, and personnel during maintenance and operation.

• Model: DTNF322
• Voltage: 240V
• Pole configuration: 3-Pole
• Operation: Double-Throw
• Primary role: Safe on/off isolation with integral overcurrent protection
• Ideal applications: motor disconnects, panelboards, and branch circuit protection
• Design focus: compact, maintainable fusible switch for straightforward serviceability in tight installations

Why this DTNF322 stands out

Siemens engineering brings lasting reliability to environments where downtime costs time and money. The DTNF322 combines a compact footprint with a robust construction designed to withstand the rigors of real-world use in factories, workshops, and commercial facilities. The 3-pole, double-throw configuration offers flexible control of multiple lines, enabling safe isolation of equipment and selective circuit control without adding complexity to your electrical layout.

Practical use cases

• Motor disconnects on 3-phase equipment, providing a clear, safe means to isolate power for maintenance or repair.
• Panelboard protection where a compact switch is preferred to save space without sacrificing performance.
• Branch circuit protection in industrial rooms or commercial setups that require dependable, straightforward isolation.
• Maintenance-enabled systems where quick, reliable power shutdown minimizes downtime and risk to technicians.

Technical snapshot

• Voltage: 240V
• Poles: 3-Pole
• Configuration: Double-Throw
• Type: Safety switch with on/off isolation and overcurrent protection
• Ideal for: motor disconnects, panelboards, and branch circuits requiring a compact, maintainable switching solution

The DTNF322 is more than just a switch—it's a purpose-built safety device designed to streamline maintenance, protect critical equipment, and keep your operations running smoothly. With Siemens behind it, you gain confidence in steady performance and long-term reliability, even in harsh or space-constrained installations.