Siemens HF221NR 30A 2P Safety Switch, NEMA 3R, Fusible | AmpState

Designed for reliable, code-compliant equipment disconnection, the Siemens HF221NR 30A 2P Safety Switch is the ready-made solution for isolating your large machinery at the point of use. As a fusible disconnect, this NEMA 3R enclosure is built to withstand outdoor environments and retrofit projects where keeping the same part number simplifies maintenance planning and procurement.

Why the HF221NR stands out

• Fusible 30 A safety switch: provides clear, visible disconnection and overcurrent protection for your equipment, helping reduce risk during servicing and maintenance.
• Two-pole design: delivers balanced isolation for a wide range of circuits, ensuring dependable shutdown of both hot lines in the system.
• NEMA 3R enclosure: engineered for weather-resistant outdoor use and rugged indoor environments, keeping internal components protected from rain, wind, and debris.
• Part integrity for retrofits: the HF221NR is chosen when project continuity matters—retain a consistent part number to simplify spares, documentation, and future replacements.
• AmpState availability: readily sourced through AmpState, with support to confirm fit and compatibility for your installation.
• Siemens reliability: backed by Siemens engineering and compatibility with existing Siemens safety-switch ecosystems, helping ensure long-term performance and serviceability.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: HF221NR
• Product Type: Safety Switch (Fusible)
• Amperage: 30 A
• Poles: 2
• Enclosure Rating: NEMA 3R

Ideal use cases

• Outdoor equipment disconnects for industrial machinery, pumps, conveyors, and HVAC installations.
• Retrofit projects where preserving a consistent part number minimizes downtime and documentation updates.
• Point-of-use isolation in maintenance scenarios, enabling safe servicing without removing power across the system.
• New builds or upgrades that require a rugged, weather-resistant fusible switch with straightforward field replacement options.

Practical benefits you’ll notice

• Clear, deterministic shutdown of equipment, reducing the risk of arcing or accidental energization during maintenance.
• Streamlined maintenance planning thanks to a widely recognized Siemens part that stays consistent across upgrades and service cycles.
• Durable, weather-ready enclosure that keeps critical switching components protected in harsh environments.
• Simple procurement and compatibility support through AmpState to ensure the HF221NR fits your existing electrical architecture.

Tips for installation and ongoing care

• Verify circuit applicability: 30 A, 2-pole configuration aligns with your feeder design and protective device coordination.
• Prepare for retrofit: use the HF221NR when you need a fusible disconnect with a stable part number for future maintenance plans.
• Ensure enclosure integrity: install in an outlet or panel location that benefits from NEMA 3R protection against weather and debris.
• Plan fuse replacement strategy: keep compatible fuses on hand and schedule periodic checks to minimize downtime during service intervals.
• Need confirmation on fit? Message AmpState for compatibility checks and guidance on integrating the HF221NR with your existing equipment roundup.

Ready to implement a dependable, code-ready disconnect at the point of use? The Siemens HF221NR 30A 2P Safety Switch delivers robust isolation, retrofit-friendly design, and outdoor-ready protection, backed by AmpState’s support to verify fit and availability.