Eaton | KD4100 | Circuit Breaker | 100A | 4-Pole

Meet the Eaton KD4100 Circuit Breaker—a reliable 100 A, 4-pole protective device designed for maintenance, retrofit, and replacement projects where exact specifications matter. Identified by the KD4100 part number, this breaker is a precise fit for Eaton-compatible panels and configurations, helping you preserve system protection without guesswork.

Why the KD4100 stands out

In 3‑phase electrical systems with a neutral, a 4‑pole breaker provides complete isolation of all conductors, enhancing safety during faults and simplifying service. The KD4100’s four‑pole design ensures that every conductor can be simultaneously disconnected when needed, delivering predictable trip behavior and robust protection aligned with your panel’s engineering.

Key specifications

• Amperage: 100 A
• Poles: 4-Pole
• Part reference: KD4100

What problems this solves

If you’re maintaining, retrofitting, or replacing breakers in Eaton panels, the KD4100 provides a guaranteed-spec alternative that matches your existing protections. By using the exact part number, you minimize compatibility risk, avoid nuisance trips from mismatched ratings, and keep your electrical distribution aligned with design intent and safety standards.

Ideal use cases

• Maintenance or service on commercial or industrial panels that require a 4-pole, 100 A protective device
• Retrofits where upgrading to a 4-pole configuration is needed for 3‑phase with neutral systems
• Replacement of aging breakers in Eaton-based installations with a like-for-like KD4100 reference for seamless compatibility

Important: Confirm fit and ratings before ordering. The part number KD4100 is the best reference for compatibility with your panel and current electrical design.