Square D FDA120303 Circuit Breaker, 100A, 1-Pole, 240V

Meet the Square D FDA120303—an industrial-grade circuit breaker built for reliability in service panels, maintenance work, and replacement projects. With a 100 A rating, a single pole, and 240 V operation, this device delivers targeted protection where fast, predictable tripping matters most.

Key distinctions you’ll notice

• 100 A, 1-pole, 240 V specs tailored for compact, single‑phase protection in demanding installations
• Thermal Magnetic mechanism within the FD series provides reliable overload and short‑circuit protection
• Part Number: FDA120303 ensures precise fit and compatibility when matching to your equipment
• Primarily used for industrial electrical service, maintenance, and replacement projects

Compatibility and installation guidance

To ensure a seamless fit, verify the part number and your application requirements. This item is commonly associated with the Thermal Magnetic Circuit Breaker FD series, so double‑check that your panel or enclosure supports FD‑type breakers. If you’re unsure about compatibility, send us a message and we’ll assist with part‑number matching and suitability checks.

Use cases and who benefits most

• Electrical technicians upgrading or replacing components in industrial facilities that run 240 V single‑phase circuits
• Maintenance teams needing quick, dependable replacement for critical protection points without complex wiring changes
• Projects where clear fault indication and precise trip behavior minimize downtime and maintenance risk

Choosing the FDA120303 means selecting a dependable, FD‑series compatible circuit breaker designed for industrial environments. It delivers straightforward, durable protection for your 240 V circuits and aligns with Square D’s Thermal Magnetic FD family—helping you keep systems running smoothly and safely.