Eaton | FDB4100 | Circuit Breaker | 100A | 4-Pole | 600V

Meet the Eaton FDB4100 4-pole circuit breaker, a 100A unit built for 600V electrical systems. This model is specifically suited for maintenance, retrofit, and replacement projects where exact specifications matter. Use the part number FDB4100 as your best compatibility reference to ensure a seamless substitution within Eaton panels and gear.

Designed for reliability in demanding environments, the FDB4100 protects 3-phase installations that require a neutral path, helping to interrupt fault currents and prevent overloads. The 4-pole configuration simplifies wiring in panel layouts that rely on a shared neutral, maintaining consistent protection across all poles.

Key specifications

• Amperage: 100 A
• Poles: 4-Pole
• Voltage rating: 600 V
• Reference: Part number FDB4100 — this is the best compatibility check

Use cases and benefits

• Maintenance: Swap in a like-for-like 4-pole breaker in existing 600V systems without reconfiguring the panel.
• Retrofit: Upgrade to 4-pole protection for 3-phase setups that require a neutral path, keeping your protection strategy aligned with current needs.
• Replacement: Direct-substitution in Eaton-based installations where the FDB4100 is specified or compatible with the original equipment.

Why this matters: selecting the correct part number minimizes compatibility risk—panel buses, trip characteristics, and protective coordination stay consistent when you stick with FDB4100. This makes planning, sourcing, and installation smoother for both electrical professionals and experienced DIY technicians working on commercial or industrial projects.

Important note: Confirm the fit and ratings before ordering. Rely on the FDB4100 part number as the most reliable reference to ensure your new breaker matches your panel and protection scheme.