Siemens HNF365RA - 400A, 600V, 3-Pole, Safety Switch

The Siemens HNF365RA Safety Switch delivers reliable electrical isolation for demanding industrial and commercial environments. Built to support rigorous lockout/tagout procedures, this 400A, 600V, 3-pole solution provides a clean, dependable disconnect under load, helping maintenance teams work safely and efficiently.

Why the Siemens HNF365RA stands out

• High-current capability: 400A rating makes it a robust choice for feeders, motors, and equipment in busy plant floors and service rooms.
• Wide voltage compatibility: Rated up to 600V, suitable for a broad range of electrical distribution needs across industrial and commercial sites.
• Three-pole isolation: The 3-pole design effectively isolates all three phases, delivering comprehensive protection for three-phase systems.
• Lockout/Tagout ready: Engineered to support standard safety procedures, helping teams secure power during maintenance and inspections.
• Disconnection under load: Designed to clearly interrupt current flow when required, reducing risk during service and testing.
• Durable for long-term use: Built to withstand the demands of continuous operation in busy environments, delivering consistent performance over time.

Ideal use cases

• Disconnection points for motor control centers, feeders, and industrial machinery in manufacturing lines.
• Maintenance-ready isolation in commercial facilities such as data centers, HVAC systems, and large electrical rooms.
• Temporary power shutdowns during installation, upgrades, or safety inspections without compromising system integrity.

Safety, compliance, and practical benefits

The HNF365RA is purpose-built to support strict safety programs. By providing a clear, reliable means to isolate power, it helps facility managers meet lockout/tagout requirements and minimizes exposure to live electrical hazards during maintenance. Its dependable performance under load also means technicians can verify equipment status with confidence, reducing downtime and rework.

Specifications at a glance

• Amperage rating: 400A
• Voltage rating: 600V
• Number of poles: 3-Pole
• Product type: Safety Switch
• Brand: Siemens
• Model: HNF365RA

Whether you’re equipping a new installation or upgrading an aging safety switch, the Siemens HNF365RA provides a clear, authoritative solution for safe power isolation. Its combination of high current capability, three-phase isolation, and lockout/tagout compatibility makes it a trusted choice for professionals who value safety and reliability as much as system uptime.