Eaton Cutler-Hammer DH363FRK 100A 3P 600V Safety Switch, NEMA 3R, Fusible | AmpState

Eaton Cutler-Hammer DH363FRK 100A 3P 600V Safety Switch is a rugged, purpose-built equipment disconnect designed to safely isolate systems at the point of use. With a NEMA 3R enclosure and fusible construction, it delivers reliable protection for outdoor and indoor installations while keeping maintenance and retrofit workflows streamlined.

Why this safety switch stands out

• Reliable 3-phase protection: 100 A, 3-pole operation handles typical mid-size industrial loads with consistent performance across interrupting and switching duties.
• 650V-class capability, compact form: Rated up to 600 V, this fusible safety switch provides robust overcurrent protection and a clean disconnect in a single, integrated enclosure.
• NEMA 3R enclosure for outdoor duty: Built to withstand weather conditions, making it suitable for exterior equipment locations without compromising safety or ease of access.
• Fusible design for precise protection: Replaceable fuses offer selectivity and straightforward maintenance, helping protect downstream equipment and wiring while enabling faster fault isolation.
• Part-number stability for retrofit projects: The DH363FRK designation supports maintenance planning and BOM consistency when upgrading or replacing legacy systems.
• Amps from AmpState: Available through AmpState, making it easier to source the exact part for ongoing service and spares inventory.

Practical use cases and benefits

• Equipment isolation at the load end: Use as the primary disconnect for pumps, fans, compressors, conveyors, and other three-phase equipment, allowing safe servicing without energizing the entire system.
• Retrofit-friendly solution: When upgrading or replacing older disconnects, the DH363FRK’s exact part number helps preserve bill-of-material accuracy and reduces change management overhead.
• Maintenance planning made easy: With a fusible configuration, technicians can stock standard fuses and quickly replace them to restore service, minimizing downtime during outages or routine maintenance.
• Outdoor-ready safety: The 3R-rated enclosure helps protect personnel and wiring in exposed locations, supporting compliance with safety standards in outdoor installations.

What you’ll experience in real-world scenarios

• Fast, dependable isolation during scheduled maintenance, reducing the risk of accidental energization.
• Clear coordination with upstream protection schemes, thanks to the predictable, fusible protection strategy.
• Long-term reliability in harsh environments, thanks to the NEMA 3R-rated enclosure designed for outdoor service.

Specifications at a glance

• Eaton Cutler-Hammer
• Part number: DH363FRK
• Type: Safety switch, fusible
• Amperage: 100 A
• Poles: 3
• Voltage: 600 V
• Enclosure rating: NEMA 3R

If you’re coordinating a retrofit, planning maintenance, or specifying a safe, reliable disconnect for outdoor equipment, the DH363FRK delivers a concrete, purpose-driven solution. For compatibility confirmation or help selecting the right fit, AmpState can assist you in validating the installation with your exact system requirements.