MITSUBISHI ELECTRIC NF50-UC CIRCUIT BREAKER 15A 440VAC 50KA FAST SHIP

Meet the Mitsubishi Electric NF50-UC Circuit Breaker—a compact yet robust protective device engineered for reliable electrical distribution in industrial, commercial, and demanding residential environments. With a 15A rating, 440VAC operating voltage, and an impressive 50 kA interrupting capacity, this breaker is built to safely control and protect your power circuits when the load and fault currents are at their peak.

Key specifications at a glance

• Amperage rating: 15A
• Voltage rating: 440VAC
• Interrupting capacity: 50 kA

Why the NF50-UC stands out

Designed by Mitsubishi Electric, the NF50-UC is a purpose-built solution for panel upgrades, retrofit projects, and maintenance replacements where dependable performance matters. Its high interrupting capacity means it can safely interrupt fault currents typical in larger installations, reducing the risk of equipment damage and downtime. The 440VAC rating makes it suitable for divider circuits and distribution panels in commercial and industrial settings, while the 15A rating provides precise protection for smaller feeder circuits.

Fast Ship and easy deployment

Time is critical in service work. This unit is offered with fast shipping, helping electrical teams minimize downtime on job sites. Whether you’re stocking spares, completing a retrofit, or replacing a worn breaker, the NF50-UC is a trusted, ready-to-install option that integrators and MRO teams can rely on.

Who this is for

• Electricians performing panel upgrades or retrofits in commercial or industrial facilities
• Panel builders and engineering teams seeking dependable, drop-in breakers for NF50-series installations
• Maintenance, repair, and operations (MRO) teams needing ready-to-ship replacements to keep projects on schedule

Practical use cases

• Upgrading aging panels to handle higher fault currents without compromising protection on 15A branch circuits
• Retrofit projects where a reliable 440VAC protection device is required for new equipment feeds
• Stocking spare breakers for service calls, ensuring rapid replacement and reduced downtime

Tips for use and installation

Always have a licensed electrician perform installation and verification. Confirm that a 440VAC circuit in your panel matches the NF50-UC’s voltage rating, and ensure compatibility with the panel’s model and bus configuration. During installation, follow standard electrical safety practices, verify the circuit is de-energized, and secure proper terminal torque per the panel’s guidelines. Use as part of a planned protective strategy to minimize equipment damage and service interruptions.

With the Mitsubishi Electric NF50-UC Circuit Breaker, you get a precise, durable, and readily available solution designed to keep critical electrical systems protected while supporting efficient project timelines.