Eaton KD2400FS 400A 2-Pole 240 V Circuit Breaker

Meet the Eaton KD2400FS, a purpose-built main protection device for demanding electrical environments. With a robust 400 A rating and a two-pole design at 240 V, this circuit breaker is engineered to shield heavy feeders in commercial and industrial panels while enabling a clean, reliable disconnect when protection is required. Part Number KD2400FS uniquely identifies this unit within Eaton’s KD-series ecosystem, ensuring precise compatibility and straightforward replacement.

Key specifications at a glance

• Current rating: 400 A
• Poles: 2
• Voltage rating: 240 V
• Part number: KD2400FS
• Series: Eaton KD-series (designed for use in compatible Eaton panels)

Why this matters for your electrical system

This KD2400FS isn’t just a breaker—it’s a critical safety and reliability component for high-demand feeders. The 2-pole arrangement protects both legs of a 240 V circuit simultaneously, ensuring coordinated shutoff in the event of an overload or fault. Its 400 A capacity makes it suitable for feeding large loads, reducing nuisance trips and providing a clear point of protection for feeders that power essential equipment, compressors, data-center infrastructure, and other heavy-duty circuits.

Ideal applications and use cases

• Main feeder protection in commercial electrical panels where large loads are distributed across multiple circuits
• Industrial installations with high-current equipment that require reliable, coordinated tripping on both legs
• Service entrances or large sub-panels that need a robust, easily replaceable main disconnect
• Retrofits or panel upgrades within Eaton KD-series environments that demand exact compatibility

Installation and compatibility considerations

To maximize performance and safety, install the KD2400FS in Eaton KD-series panels and load centers that are rated for this device. Always confirm panel compatibility, follow manufacturer torque specifications, and adhere to local electrical codes and best practices for high-current protection. If you’re replacing an existing main breaker, verify the lineup and labeling match the KD2400FS to ensure seamless operation and replacement clarity.

Practical insights for better outcomes

• Plan ahead for spare breakers within the same KD-series family to simplify future upgrades or maintenance.
• Label all affected circuits clearly on the panel door to reflect the heavy feeders protected by this 400 A main breaker.
• When sizing feeders and conductors for 400 A service, follow NEC or local codes to ensure conductor ampacity aligns with protection settings.

With the Eaton KD2400FS, you gain a high-current, two-pole protection solution that aligns with your heavy-load infrastructure, delivering dependable overcurrent protection and straightforward service continuity for demanding installations.