MITSUBISHI ELECTRIC NF100-UC CIRCUIT BREAKER 75A 440VAC 65KA FAST SHIP

Designed by MITSUBISHI ELECTRIC for reliable, high-demand electrical distribution, the NF100-UC circuit breaker delivers precise protection for industrial and commercial systems—and even demanding residential setups. With a 75A rating and 440VAC operating voltage, it handles substantial loads while guarding against damaging faults. Built for retrofit projects, panel upgrades, and maintenance replacements, this breaker is a trusted choice for professionals who won’t settle for uncertainty.

Why the NF100-UC 75A 440VAC stands out

Engineered for durability and predictable performance, this Mitsubishi Electric breaker is optimized for service work where downtime is unacceptable. Its 65kA interrupting capacity means it can safely interrupt high fault currents typical of large electrical systems, helping protect downstream equipment and wiring. The NF100-UC design integrates smoothly with existing NF-series panels, making replacements and upgrades straightforward for electricians, panel builders, and MRO teams.

Key specifications at a glance

• Amperage rating: 75A
• Voltage rating: 440VAC
• Interrupting capacity: 65kA
• Series: NF100-UC
• Availability: Fast ship for urgent projects

Ideal use cases

• Panel upgrades in industrial facilities where existing NF100-UC components are standard
• Retrofit projects replacing aging or failed breakers without changing panel architecture
• Maintenance replacements to minimize downtime during service work
• Stock spares for electrical contractors, panel builders, and MRO teams who need dependable parts on hand

What problems this breaker solves

When you’re wiring a facility with demanding loads, you need a breaker you can trust to trip reliably under fault conditions, protect conductors, and fit neatly into established NF-series panels. The NF100-UC 75A 440VAC delivers that predictable performance, backed by Mitsubishi Electric’s reputation for robust electrical components.

Practical guidance and insights

• Verify compatibility with your NF-series panel and the NF100-UC family to ensure a seamless fit and coordinated protection.
• Consider your system’s fault current profile to confirm that a 65kA interrupting rating aligns with your safety requirements and upstream protection coordination.
• For procurement planning, the “FAST SHIP” designation helps minimize downtime when replacing worn or damaged breakers in critical installations.

Choose the MITSUBISHI ELECTRIC NF100-UC circuit breaker when you need dependable, high-performance protection that professional installers trust for panel upgrades, retrofits, and maintenance work. It’s the practical, ready-to-stock solution that keeps electrical systems safe, compliant, and running smoothly.