Eaton FDB3125 - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

Eaton FDB3125 is a 125 A, 600 V, 3-pole molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to fit seamlessly into Eaton installations, this device helps you safeguard critical electrical systems with precision and ease.

• Compact molded case design maximizes panel space and simplifies mounting in dense enclosures, making it ideal for compact loadcenters and utility panels.
• Thermal-magnetic trip unit combines thermal overload protection with instantaneous magnetic trip for stable, repeatable protection against both sustained overcurrents and sudden short circuits.
• OEM compatibility engineered for seamless integration with matching Eaton loadcenters and panelboards, ensuring clean fitment and reliable electrical coordination.
• Versatile across settings suited for residential, commercial, and light industrial applications where three-phase protection is required.
• Focused protection for branch circuits specifically designed to guard individual branches from overcurrent and short-circuit events, helping to prevent equipment damage and downtime.

Technical snapshot

• Manufacturer: Eaton
• Part Number: FDB3125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an aging panel, adding protection to a new three-phase feeder, or coordinating with Eaton’s panelboard ecosystem, the FDB3125 delivers dependable, drop-in performance. Its robust design and precise trip characteristics help you maintain electrical reliability across a spectrum of applications—from home garages and small offices to light industrial equipment setups.