Eaton FG3125 - Circuit Breaker | AmpState

The Eaton FG3125 molded case circuit breaker is a compact, dependable solution for protecting branch circuits in panelboards and load centers. Designed to integrate seamlessly with Eaton and compatible OEM panel systems, the FG3125 delivers consistent protection across residential, commercial, and light industrial environments.

Key advantages that set the FG3125 apart

• Space-efficient design: The molded case format minimizes footprint while maximizing available panel space, making it ideal for crowded electrical panels and retrofit projects.
• Thermal-magnetic trip unit: Combines a thermal element for gradual overload protection with a magnetic element for rapid response to short-circuit events, delivering stable, repeatable protection performance.
• OEM-compatible reliability: Specifically designed to snap into matching Eaton OEM load centers and panelboards, preserving protection coordination, labeling, and replacement convenience.
• Versatile application: Suitable for a wide range of installations—from residential service panels to light commercial and industrial distribution—where dependable circuit protection is critical.

Practical use cases

• Upgrading aging breakers in a home panel to restore precise overcurrent protection and improve safety for kitchen, laundry, and HVAC circuits.
• Installing in new or existing panelboards where compact form factor helps accommodate additional branch circuits without compromising protection quality.
• Replacing a similarly rated breaker in commercial or light industrial panels to maintain consistent trip characteristics and downstream coordination.

Technical overview

• Manufacturer: Eaton
• Part Number: FG3125
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection

Choosing the Eaton FG3125 means investing in a trusted, precise protection device that aligns with your existing Eaton panel ecosystem. Its compact design, proven thermal-magnetic trip technology, and OEM-friendly compatibility translate to straightforward installation, reliable performance, and long-term peace of mind for residential, commercial, and light industrial electrical systems.