Siemens HNF365RA 400A 3P 600V Safety Switch, NEMA 3R, Fusible, Non-Fusible | AmpState

Meet the Siemens HNF365RA—a purpose-built safety switch designed for reliable equipment disconnect and precise isolation at the point of use. With a robust 400 A capacity and a 3-pole design, this switch is engineered to handle demanding industrial applications while offering a flexible choice between fusible and non-fusible configurations. Encased in a NEMA 3R enclosure, it’s ready for outdoor or exposed installations without compromising performance or safety.

Key specifications at a glance

• Brand: Siemens
• Part Number: HNF365RA
• Product Type: Safety Switch
• Amperage: 400 A
• Poles: 3
• Voltage: 600 V
• Enclosure Rating: NEMA 3R
• Configuration: Fusible or Non-Fusible

Why this safety switch stands out

The HNF365RA is purpose-built for equipment disconnect and isolation at the point of use, making maintenance and panel builders’ lives easier. The NEMA 3R rating means it provides rainproof protection and durable outdoor performance, so you can deploy it in weather-exposed environments without compromising safety or reliability. The dual configuration (fusible and non-fusible) offers flexibility to align with your protection philosophy and spare-part strategy, reducing downtime during fuse replacements or future upgrades.

Ideal use cases and who benefits most

• Maintenance teams needing a dependable on-site disconnect for motors, pumps, HVAC units, or conveyors.
• Panel builders seeking a direct part-number match for rapid sourcing and streamlined assembly.
• Facilities managers maintaining spare inventory with a versatile, long-lasting safety switch.
• Outdoor or exposed installations that require weather-resistant protection with reliable isolation.

Practical insights and setup considerations

When you opt for the fusible configuration, the HNF365RA provides traditional overcurrent protection with replaceable fuses—great for systems where fuse strategy is already in place. The non-fusible variant acts as a robust switch that works with upstream protective devices, simplifying maintenance in environments with centralized protection schemes. This versatility helps you tailor your protection plan to the specific equipment load, maintenance cadence, and inventory strategy.

Need help with fit or compatibility?

AmpState offers the HNF365RA in both fusible and non-fusible configurations. If you’re unsure about the exact part-number match for your panel or downstream equipment, send a message and we’ll help confirm fit and ensure seamless integration with your existing protection scheme.

Availability and support

The Siemens HNF365RA is available from AmpState, with support to verify compatibility and alternatives if your configuration needs evolve. This part is designed to simplify keep-on-hand spare inventories for critical maintenance windows, reducing downtime and accelerating field service.