Eaton FDB3125L - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton FDB3125L is a 125A, 600V, 3‑pole molded case circuit breaker designed to deliver dependable branch circuit protection against overcurrent and short circuits in panelboards and loadcenters. Built for real-world electrical environments, it combines compact housing with robust protection for both residential and light commercial applications.

Why this breaker stands out

• Space‑efficient molded case design maximizes panel real estate without compromising protection, making it ideal for crowded or retrofit panel installations.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining precise magnetic trip action with temperature-based overload detection, reducing nuisance trips and improving coordination with other protective devices.
• Three-pole configuration supports three-phase circuits, delivering coordinated protection in multi‑phase panelboards and loadcenters.
• OEM‑matched compatibility is designed to work with matching Eaton OEM loadcenters and panelboards, ensuring reliable performance and straightforward replacements.
• 125A, 600V rating supports typical residential, commercial, and light industrial electrical systems, providing a versatile solution for a range of protective needs.

Specifications at a glance

• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 125A
• Voltage rating: 600V
• Poles: 3 (three-pole design)
• Part number: FDB3125L
• Application: Branch circuit overcurrent and short‑circuit protection

Ideal use cases

• New panel installations in residential, commercial, and light industrial settings where space is at a premium.
• Upgrading or replacing breakers in existing panelboards and loadcenters to maintain consistent protection with OEM components.
• Protection of three‑phase equipment and loads in small commercial spaces, workshops, and electrical rooms.

Practical installation and care tips

To maximize reliability, pair the Eaton FDB3125L with compatible OEM load centers and panelboards, ensure connections are torqued to manufacturer specs, and verify voltage and phase requirements before installation. This breaker is designed for straightforward integration into standard electrical systems, delivering predictable performance when correctly installed by a qualified electrician.

Choose the Eaton FDB3125L for a compact, reliable, and OEM‑compatible solution that protects your electrical system with a precise thermal‑magnetic trip and robust three‑pole protection—delivering peace of mind across residential, commercial, and light industrial applications.