Eaton FDB3100 - 100 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Eaton FDB3100—a 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. With a robust 100 A and 600 V rating, this unit delivers consistent overcurrent and short-circuit protection for three-phase systems in residential, commercial, and light industrial environments.

Why the Eaton FDB3100 stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping maintain reliable performance in spaces with equipment movement or vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection—quickly responding to short circuits while minimizing nuisance trips from normal inrush currents.
• OEM-compatible design is engineered to pair with matching OEM loadcenters and panelboards for seamless, plug-and-play installation.
• 3-pole protection ensures simultaneous interruption of all phases, enhancing safety for 3-phase motors and equipment.
• Rugged molded case construction supports durable operation across residential, commercial, and light industrial applications.

Technical snapshot

• Manufacturer: Eaton
• Part number: FDB3100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Voltage rating: 600 V
• Poles: 3
• Mounting style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection

Who benefits from this breaker

Ideal for electrical professionals designing, upgrading, or maintaining panelboards and loadcenters in homes, small offices, retail spaces, and light industrial facilities. If you’re sizing a 3-phase feeder, protecting multiple branch circuits, or replacing an aging protector, the Eaton FDB3100 provides reliable, code-compliant performance with straightforward installation.

Real-world performance and use cases

In facilities with multiple 3-phase motors and lighting circuits, the 100 A at 600 V rating offers ample headroom for startup surges while the thermal-magnetic protection maintains fast, decisive fault clearing. The bolt-on design minimizes connection looseness in busy electrical rooms, supporting long service life in environments that experience vibration or equipment turnover.

Practical tips for installation and maintenance

• Verify compatibility with your OEM panelboard or loadcenter to ensure proper fit and coordinated protection.
• Torque mounting hardware to the specified values to maintain a secure, low-resistance connection.
• Perform periodic visual inspections and functional checks during service to confirm the trip mechanism remains reliable.