Square D | FCP34045 | Circuit Breaker | 45A | 3-Pole | 480V

Meet the Square D FCP34045 circuit breaker—a durable, industrial-grade solution designed for maintenance, retrofit, and replacement in three-phase 480V electrical systems. This genuine Square D component delivers reliable protection for demanding environments where precise compatibility and consistent performance matter most. Use it when you need a precise, drop-in replacement that preserves system safety and operational continuity.

Key specifications

• Amperage: 45 A
• Poles: 3-Pole
• Voltage rating: 480V
• Part number: FCP34045
• Intended use: maintenance, retrofit, and replacement in compatible Square D installations

Why this 45A, 3-Pole 480V breaker stands out

• Exact compatibility: The part number FCP34045 is the most reliable reference for ensuring a proper fit in your panel or switchgear. Always confirm fit and ratings before ordering to avoid surprises during installation.
• Authentic Square D reliability: Built to meet the stringent performance standards of Square D, this breaker integrates smoothly with existing protection schemes and maintains consistent trip characteristics within compatible systems.
• Streamlined maintenance and retrofits: When upgrading or replacing aging breakers, choosing the same model minimizes wiring changes and panel reconfiguration, reducing downtime and installation complexity.

Ideal use cases

• Protect 3-phase motors, drives, and heavy equipment in manufacturing floors, HVAC systems, and processing lines powered by 480V three-phase networks.
• Retrofit projects where a precise 45 A rating and 3-pole configuration are required to restore protective coordination without modifying downstream circuitry.
• Maintenance cycles in facilities that rely on standardized, compatible Square D components for quick part replacement and service continuity.

Practical guidance for a successful replacement

Before ordering, verify that FCP34045 matches your panel’s labeling and rating requirements. If you’re replacing an existing unit, swap it like-for-like to preserve overload protection and interrupting capacity. Keep the original part number handy during procurement to ensure you’re sourcing the exact specification your system was designed for.

Designed for reliability under demanding electrical loads, the Square D 45A 3-Pole 480V circuit breaker helps keep critical equipment protected while minimizing downtime and installation friction. The clear reference to the part number in your maintenance logs makes future service straightforward and efficient.