Square D | FA14050A | Circuit Breaker | 50A | 1-Pole | 277V

Square D FA14050A Circuit Breaker — a precise, reliable protection device built for 277V systems that demand a 50A, single-pole solution. Designed for maintenance, retrofit, and replacement, this breaker helps keep critical electrical loads safe and protected with minimal panel disruption.

Why this FA14050A stands out

• Targeted protection for 50A, 277V circuits: Ideal for commercial lighting, power feeds, and other single-pole applications that run at 277V, delivering dependable short-circuit and overload protection where it matters most.
• Simple, focused design: A 1-Pole configuration protects a single hot conductor, making substitutions straightforward for compatible panels and ensuring clear, predictable tripping behavior.
• Proven Square D reliability: Built with the trusted trip characteristics and rugged construction that professionals rely on to minimize downtime and protect downstream equipment.
• Retrofit-ready for maintenance or upgrades: When your system requires exact specs, FA14050A provides a seamless replacement path without unnecessary panel changes.
• Clear compatibility guidance: Verify fit and ratings using the FA14050A part number as the primary reference before ordering.

Specifications at a glance

• Amperage: 50A
• Poles: 1-Pole
• Voltage: 277V
• Part number: FA14050A

Use cases you’ll encounter

• 277V circuits in commercial buildings where a single-pole, high-current protection device is required for lighting and related loads.
• Retrofits and replacements in panels that specify FA-series or FA14050A-compatible breakers, ensuring consistent performance with existing safety margins.
• New installations in facilities designed around 277V distribution, where reliable, fast-acting protection on a single hot conductor is essential.

Practical installation and best practices

• Before ordering or installation, confirm fit and ratings with the FA14050A part number as the definitive reference for compatibility.
• Power down the panel and verify absence of voltage on the circuit before removal or installation.
• Follow manufacturer torque specifications and panel instructions to ensure proper seating, electrical contact, and thermal performance.
• Keep a few spare FA14050A units on hand for planned maintenance or future panel updates to minimize downtime.