Eaton | FDB4040L | Circuit Breaker | 40A | 4-Pole | 600V

Experience dependable protection with the Eaton FDB4040L circuit breaker. This 40A, 4-pole unit is built for 600V systems and is especially well-suited for maintenance, retrofit, and replacement projects where exact specifications matter. Rely on a trusted name in electrical protection to keep your panels safe and your downtime minimal.

Why the Eaton FDB4040L stands out

• 4-pole design delivers simultaneous disconnection across all poles, providing robust protection for 3‑phase systems with a neutral and ensuring full isolation for safety during maintenance or faults.
• 40A current rating offers precise overcurrent protection for feeders and circuits that require reliable branch circuit protection without unnecessary tripping.
• 600V rating expands applicability to higher‑voltage industrial environments, motors, and equipment common in commercial and manufacturing settings.
• Part number clarity—FDB4040L serves as the best reference for compatibility, helping you match the exact device to your panel or enclosure.

Ideal use cases

Designed for maintenance and retrofit projects, the FDB4040L is the practical choice when replacing aging breakers or upgrading to a standardized 4‑pole, 600V solution. It fits panels and feeders that require precise amperage, pole configuration, and voltage ratings, enabling quick swaps with minimal downtime. Ideal for industrial control panels, distribution boards, and equipment rooms where reliable protection translates to reduced risk and smoother operation.

Specifications & compatibility

• Amperage: 40A
• Pole configuration: 4-Pole
• Voltage rating: 600V
• Reference reference: Part number FDB4040L is the best compatibility reference
• Usage note: Confirm fit and ratings before ordering to ensure a seamless replacement or retrofit.

Choosing the Eaton FDB4040L means selecting a proven protective device designed to deliver reliable trip performance and straightforward installation in demanding electrical environments. If you’re aligning a retrofit plan or replacing an existing 4‑pole, 600V breaker, this model provides the exact specs you need with the lasting dependability Eaton is known for.