Square D FA34045 - 45 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D FA34045—a 45A, 3-pole plug-in molded case circuit breaker designed to reliably guard branch circuits against overcurrent and short-circuit events in panelboards and loadcenters. Built for fast, hassle-free installations, this device pairs a quick plug-in connection with precise thermal-magnetic protection to deliver dependable performance across varying loads and conditions.

Why the FA34045 stands out

• Fast plug-in connection for swift installation and effortless replacement, minimizing downtime during panel upgrades or service maintenance.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining a heat-sensitive element for gradual overloads with a magnetic element for high-energy faults, helping to prevent nuisance trips and ensure timely isolation when it matters.
• OEM-ready compatibility designed to work with matching Square D load centers and panelboards, ensuring proper fit, coordinated protection, and safe operation.
• Versatile application suitable for residential, commercial, and light industrial electrical environments that require reliable 3-pole protection for three-phase circuits.

Ideal use cases

• Upgrading or maintaining residential service panels where quick plug-in replacements save labor time.
• Protection for commercial distribution panels handling moderate loads across multiple branch circuits.
• Light industrial panels needing sturdy, dependable overcurrent and short-circuit protection in a plug-in format.
• Subpanel protection in 3-phase systems where rapid disconnection helps safeguard equipment and personnel.

Technical specifications

• Manufacturer: Square D
• Part Number: FA34045
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 45A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D FA34045 for a reliable, ready-to-install protection solution that blends fast serviceability with precise, dependable performance. It’s the practical choice for safeguarding electrical systems in a wide range of environments, backed by Square D quality and optimized for seamless integration with your panelboard or loadcenter.