Eaton | FDB4045L | Circuit Breaker | 45A | 4-Pole | 600V

Meet the Eaton FDB4045L: a 45A, 4-Pole, 600V circuit breaker designed for maintenance, retrofit, and replacement projects where exact specifications matter. Built to integrate with Eaton panel systems and legacy gear, this part ensures a reliable, end-to-end protection solution for demanding electrical environments.

Key specifications

• Amperage: 45A
• Poles: 4-Pole
• Voltage: 600V
• Part number: FDB4045L

What makes it unique

• Exact-fit compatibility: The part number FDB4045L is your best reference for matching the right breaker to Eaton panels and compatible legacy systems, reducing guesswork during replacements.
• 4-Pole design for multi-phase protection: Ideal for three-phase circuits with a common neutral, delivering coordinated protection and cleaner wiring in industrial and commercial setups.
• Maintenance-ready for downtime reduction: Designed for straightforward installation in retrofit and replacement scenarios, helping you minimize disruption during service windows.

Ideal use cases

• Upgrading aging distribution panels that require a 4-Pole, 600V protection solution
• Replacement for failed or worn breakers in industrial automation and process-control panels
• Retrofit projects where exact amperage, pole configuration, and voltage are critical for compatibility

Practical notes for buyers

Before ordering, confirm fit and ratings. The part number is the most reliable reference for compatibility with your system. Verify your panel’s maximum voltage (600V), required amperage (45A), and pole configuration (4-Pole) to ensure a seamless, safe replacement.