Eaton gfcb240 - 40 A, 120 V Circuit Breaker | AmpState

Engineered for dependable branch circuit overcurrent and short-circuit protection, the Eaton gfcb240 is a 40A, 120V molded case circuit breaker designed to fit seamlessly in panelboards and loadcenters. This compact, thermal-magnetic device delivers precise, repeatable protection where you need it most—behind every residential, commercial, or light industrial electrical system.

• Compact molded case design maximizes panel space, making it easier to organize circuits in tight electrical panels without sacrificing protection.
• Thermal-magnetic trip unit provides stable, repeatable protection across a range of loads and short-circuit conditions, helping to prevent nuisance trips while safeguarding wiring and devices.
• OEM-ready compatibility works with matching OEM loadcenters and panelboards for straightforward replacement or upgrades, reducing installation guesswork.
• Versatile applications suitable for residential, commercial, and light industrial environments where reliable 40A circuit protection at 120V is required.

Technical specifications at a glance

• Manufacturer: Eaton
• Part Number: gfcb240
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 120V
• Application: Branch circuit overcurrent and short-circuit protection

Who should consider the Eaton gfcb240? This breaker is ideal for electricians and DIY enthusiasts upgrading or maintaining panelboards and loadcenters that require reliable 40A protection for 120V circuits. Use cases include replacing a worn or failing breaker in residential panels, expanding a panel in small commercial spaces, or upgrading a loadcenter to support higher-demand branch circuits without compromising safety.

Why this breaker stands out in practice

• Space-efficient design helps you maximize the usable area inside a panel, making room for additional circuits as your project grows.
• Consistent protection provided by the thermal-magnetic trip unit translates to predictable response times under overload conditions, improving overall electrical system reliability.
• Plug-and-play replacement with matching OEM loadcenters and panelboards simplifies installation and reduces compatibility concerns.

Practical tips for installation and use

• Verify that the panelboard or loadcenter is rated for 120V circuits and accepts 40A molded case breakers of the gfcb family.
• Ensure proper torque on terminal connections according to the panel manufacturer’s guidelines to maintain a secure, low-resistance connection.
• Keep spare gfcb240 breakers on hand for quick replacements during future service or panel enhancements.