Square D FA14045B - 45 A, 1-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D FA14045B — a 45A, 1-pole plug-in molded case circuit breaker crafted to safeguard your panelboards and load centers from overcurrent and short circuits. Available from AmpState, this trusted Square D component combines fast installation with dependable protection for a wide range of electrical setups, including residential, commercial, and light industrial environments.

Why this breaker stands out

• Fast plug-in connection: Snap-in mounting for quick installation and simple replacement, minimizing panel downtime during maintenance or upgrades.
• Thermal-magnetic trip unit: A dual-action protection system that combines a thermal element for gradual overloads with an instantaneous magnetic trip for high fault currents, delivering stable, repeatable performance.
• OEM-compatible design: Engineered to fit matching Square D load centers and panelboards, ensuring a safe, properly matched installation that meets code requirements.
• Precise 45A, 1-pole configuration: Dedicated single-circuit protection ideal for branch circuits that demand reliable interruption at 45 amps.
• Versatile deployment: Suitable for a variety of applications—from home service panels to light commercial and light industrial systems.

Ideal use cases

• Retrofitting or replacing a failed breaker in residential distribution panels where fast service is a priority.
• Maintaining and upgrading small commercial panelboards that require a reliable 1-pole 45A device.
• Projects that demand minimal downtime with plug-in compatibility and straightforward reconfiguration.

Technical specifications

• Manufacturer: Square D
• Part Number: FA14045B
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 45A
• Number of Poles: 1
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Compatibility and installation notes

Designed to pair with matching OEM load centers and panelboards, ensuring a reliable, code-compliant fit. This unit is ideal for professional installation by licensed electricians who work with Square D panel systems, offering a balance of ease of replacement and robust protection.

Choose the Square D FA14045B for dependable 45-amp, 1-pole protection that keeps circuits safe and downtime minimal. AmpState proudly offers this component as part of a complete Square D protection lineup, helping you maintain clean, compliant electrical systems.