Eaton FD2040L - 40 A, 600 V, 2-Pole Circuit Breaker | AmpState

The Eaton FD2040L is a 40A, 600V, 2-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. As part of the AmpState offering, this unit combines Eaton’s proven reliability with a compact form factor, helping you maximize panel space without compromising protection.

Why this matters: a compact molded case design fits tighter panel layouts, while a thermal-magnetic trip unit provides stable, repeatable protection performance across a wide range of fault conditions. This means faster, more predictable interruptions when faults occur and fewer nuisance trips in normal operation.

• 40A, 600V rating — proven protection for typical branch circuits in residential, commercial, and light industrial settings.
• 2-pole molded case — streamlined, space-efficient footprint that integrates smoothly with standard panelboards and loadcenters.
• Thermal-magnetic trip unit — combines overload protection with short-circuit sensing for reliable, fast response under fault conditions.
• OEM compatibility — engineered to be used with matching OEM loadcenters and panelboards for a clean, dependable fit and long-term performance.
• Versatile applications — ideal for residential service panels, commercial electrical rooms, and light industrial distribution where dependable protection is essential.
• Durable construction — designed for everyday panelboard use, delivering consistent protection and peace of mind in busy electrical environments.

Practical use cases

In a home panel, the FD2040L protects circuits dedicated to kitchen appliances, lighting, and outlets, ensuring safe shutoff during overloads or short circuits. In a small office, it guards power and lighting circuits, helping maintain uptime while meeting protective requirements. In light industrial panels, it provides reliable protection for control circuits and moderate-load feeders, allowing higher panel density without sacrificing safety.

Installation and compatibility guidance

When selecting this breaker, confirm that your panelboard or loadcenter supports a 2-pole, 40A, 600V molded case breaker of this style. The FD2040L is designed for straightforward substitution in compatible Eaton and OEM panel systems, enabling efficient upgrades or replacements without extensive rewiring. Pair it with circuits that require reliable overcurrent protection and ensure the amperage, voltage, and pole count align with your circuit design and protection strategy.