Eaton | CKD3400Y | Circuit Breaker | 400A | 3-Pole | 600V

Meet the Eaton CKD3400Y Circuit Breaker—the trusted protection solution built for demanding industrial and commercial power systems. With a rugged 400 A rating, a 3-pole configuration, and a 600 V maximum, this breaker is engineered to guard three-phase circuits where reliable overcurrent protection matters most.

Designed for maintenance, retrofit, and replacement scenarios, the CKD3400Y delivers consistent performance in panels and switchgear that require Eaton’s exacting standards. Before you order, confirm fit and ratings—the CKD3400Y part number is the clearest reference for compatibility, ensuring you won’t waste time on mismatched components.

Key specifications

• Amperage: 400 A
• Poles: 3-Pole
• Voltage rating: 600 V

Ideal use cases

• Maintenance projects where original protection needs to be restored
• Retrofit work to upgrade or replace aging protection with a like-for-like Eaton solution
• Replacement in existing 600 V, three-phase distribution environments

Why choose the CKD3400Y

• Built by Eaton, leveraging decades of engineering for dependable electrical protection
• Specific, unambiguous compatibility via the CKD3400Y part number—minimizing ordering errors
• Precisely matches a 400 A, 3-pole, 600 V requirement, making it a targeted choice for your circuit protection needs

Buying considerations

To ensure a correct match, verify that your equipment’s ratings align with the CKD3400Y configuration. The part number remains the most reliable reference for compatibility, so use it as your primary check when sourcing replacements or retrofits.