Siemens HF363R 100A 3P 600V Safety Switch, NEMA 3R, Fusible | AmpState

Siemens HF363R 100A 3P 600V Safety Switch is a purpose-built, outdoor-ready fusible disconnect engineered for dependable equipment isolation at the point of use. This OEM-rated switch helps you maintain a clean BOM, making replacements seamless and downtime minimal when servicing legacy installations.

• Amperage & configuration: 100 A, 3 poles, 600 V
• Enclosure: NEMA 3R-rated, designed for outdoor environments and exposed locations
• Fusible design: Fusible switch that accepts compatible fuses to provide integrated overcurrent protection
• Part integrity: Siemens HF363R ensures exact compatibility for replacement projects and maintaining original part numbers

What makes the HF363R stand out is its combination of OEM fidelity and practical utility. The NEMA 3R enclosure delivers reliable weather resistance, so you can install it at the point of use with confidence—protecting both personnel and equipment. The 3-pole, 100 A configuration provides clean, coordinated switching for three-phase systems, while the fusible design simplifies protection wiring by pairing the disconnect with the appropriate fuses in a single footprint.

Ideal use cases include outdoor machinery, conveyors, pumps, HVAC outdoor units, and other industrial equipment where a defined service disconnect is required. It’s especially valuable for replacement projects where you need to keep the BOM aligned to the original part number, ensuring compatibility with existing wiring diagrams and maintenance schedules.

Fuses are not included with the HF363R, so have the correct compatible Siemens fuses on hand during installation. Always follow proper lockout/tagout procedures and consult the unit’s installation manual for wiring and mounting details to ensure safe, compliant operation.

Available from AmpState, the HF363R is supported by knowledgeable staff who can help you confirm fit and ensure the part matches your system’s requirements. If you’re replacing a legacy disconnect or stocking spares to streamline maintenance, this Siemens safety switch delivers dependable performance and straightforward integration.

Key benefits at a glance:

• OEM part that preserves BOM integrity and original functionality
• Outdoor-ready NEMA 3R enclosure for durable, long-term use
• Integrated fusible protection for simplified electrical safeguarding
• Clear, straightforward replacement path for 3P/100 A, 600 V systems
• Dedicated AmpState support for compatibility checks and part matching