Eaton FD3100 - 100 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Engineered for dependable protection in distribution panels, the Eaton FD3100 100A, 600V, 3-pole bolt-on molded case circuit breaker is designed to keep residential, commercial, and light industrial electrical systems safe and running. With bolt-on mounting, this unit delivers a rigid, vibration-resistant bus connection that stays secure through equipment movement and HVAC cycles, reducing the risk of loose connections over time.

The thermal-magnetic trip unit provides stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic trip for short circuits. This means dependable coordination in everyday loads and rapid response during faults, helping to minimize damage to wiring and downstream devices while reducing nuisance trips from transient surges.

Why this FD3100 matters in your panel

• Secure bolt-on mounting: A robust connection that resists vibration, ensuring consistent electrical contact and long-term reliability in panelboards and loadcenters.
• Thermal-magnetic protection: Simultaneous control of overload and short-circuit events for predictable performance under real-world conditions.
• 3-pole design: Ensures synchronized disconnection of all active conductors, preserving system balance and safety in three-phase or single-phase-with-neutral configurations.
• 600V rating: Suitable for higher-voltage distribution scenarios common in commercial and light industrial settings.
• 100A continuous rating: Ideal for feeder circuits, subpanels, or main distribution paths where reliable protection is essential.
• OEM-compatible: Designed to work with matching Eaton OEM loadcenters and panelboards for streamlined replacements and upgrades.

Ideal use cases

Fit for a range of installations where robust overcurrent and short-circuit protection is required. In homes with dedicated subpanels, small offices, retail spaces, and light industrial facilities, the FD3100 acts as a trusted line of defense for feeders and sub-feed circuits. It’s particularly valuable in environments where equipment experiences regular vibration or cycling, ensuring a stable connection and reliable protection throughout the service life.

What makes it practical

• Simple compatibility: Designed to work with Eaton’s line of panelboards and loadcenters, reducing fitment guesswork during upgrades or replacements.
• Clear protection hierarchy: With a dedicated branch-circuit protection solution, you can segment loads effectively, improving startup behavior and fault isolation.
• Maintenance-friendly: Replacing or upgrading breakers in compatible panelboards is straightforward, helping minimize downtime during electrical work.

Specifications at a glance

• Manufacturer: Eaton
• Part Number: FD3100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for installation and use

When integrating the FD3100, ensure your panelboard is designed for bolt-on molded case breakers and that mounting hardware and bus connections are clean and free of corrosion. Use the panel’s OEM documentation as your guide for proper alignment and mounting torque, and verify that the protection level aligns with downstream circuit requirements. This breaker is best leveraged in fully matched Eaton systems to maintain coordination across protection devices and to simplify future maintenance or replacements.

For anyone upgrading or configuring a distribution system that requires solid, predictable protection with straightforward replacement paths, the Eaton FD3100 delivers focused performance for reliable electrical safety and long-term operation.