Siemens HF368NR 1200A 3P 600V Safety Switch, NEMA 3R, Fusible | AmpState

Siemens HF368NR is a robust, 3-pole safety switch designed for reliable equipment disconnect and isolation at the point of use. Engineered for demanding industrial environments, its NEMA 3R enclosure provides dependable outdoor performance, while the fusible configuration delivers clear circuit isolation when maintenance or emergency stops are required. This model is purpose-built for replacement projects and stocking spares to keep your BOM aligned with the original part number.

Key specifications

• Amperage: 1200 A
• Poles: 3
• Voltage: 600 V
• Enclosure rating: NEMA 3R (outdoor-ready, weather-resistant)
• Type: Fusible safety switch
• Manufacturer: Siemens
• Part number: HF368NR

What makes the HF368NR unique

The HF368NR goes beyond a simple disconnect by combining high-current capability with dependable outdoor-rated protection. With its fusible design, it provides intentional, controllable isolation for heavy equipment, helping prevent accidental energizing during service and enabling safer maintenance workflows. By matching the original BOM exactly, you can simplify procurement and installation in retrofit projects, minimizing aftermarket changes and ensuring downstream components continue to operate with coordinated protection.

Ideal use cases

• Industrial machines and process lines requiring a trusted point-of-use disconnect up to 1200 A at 600 V
• Replacement projects where exact BOM alignment to the HF368NR is essential to maintain system compatibility
• Spare parts stocking to reduce downtime during maintenance, outages, or emergency service
• Outdoor or semi-exposed installations where a rugged NEMA 3R enclosure is beneficial for weather resistance

Procurement and support

Available from AmpState. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.