Square D FA32100 - 100 A, 3-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D FA32100, a 100 A, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch-circuit protection for panelboards and load centers. Built for fast serviceability, this breaker snaps into compatible Square D OEM panels with ease, minimizing downtime during installations, upgrades, or routine maintenance.

• Fast plug-in connection for quick installation and effortless replacement, helping you keep critical electrical systems online with less downtime.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining a thermal overload sensor with a magnetic trip for immediate response to short circuits.
• 3-pole, 100 A configuration ideal for three-phase branch circuits common in commercial and light industrial applications, while also suitable for residential panel setups requiring multi-pole protection.
• OEM-compatible design ensures seamless integration with matching Square D OEM load centers and panelboards, maintaining consistent performance and trip characteristics.
• Versatile application suitable for residential, commercial, and light industrial environments where reliable overcurrent and short-circuit protection is essential.

Why this FA32100 stands out in its class is its combination of quick installation, precise protection, and compatibility. The plug-in molded-case design is purpose-built for serviceability in existing panels, reducing outage time during replacement or expansion projects. The thermal-magnetic trip behavior delivers predictable performance across varying loads and after repetitive fault events, helping to protect wiring, equipment, and occupants.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: FA32100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and scenarios

• New installations or panel upgrades in commercial spaces, where a reliable 3-pole 100 A breaker protects multi-phase equipment and distribution circuits.
• Residential or light-industrial panelboards requiring quick, tool-free replacement during service or modernization projects.
• retrofit work in existing Square D load centers that demand OEM-compatible protection with predictable trip characteristics.

Practical guidance for installation and use

Pair the FA32100 with a matching Square D OEM panelboard to ensure full compatibility and consistent protection. Before installation, verify that the panel’s catalog information aligns with a 3-pole, 100 A plug-in breaker and that the mounting style matches your enclosure. For maintenance, document the trip history and confirm replacement breakers maintain the same amperage rating and pole configuration to preserve coordinated protection across the distribution system.

With its fast installation, robust thermal-magnetic protection, and OEM compatibility, the Square D FA32100 is a practical, reliable choice for safeguarding circuits in panelboards and load centers across residential, commercial, and light industrial settings. AmpState delivers this dependable solution designed to keep electrical systems running smoothly and protect your infrastructure from overcurrent and short-circuit events.