Eaton Cutler-Hammer 3TA402K 400A 3P Circuit Breaker | AmpState

Introducing the Eaton Cutler-Hammer 3TA402K 400A 3P Circuit Breaker — a robust, three-pole protection device engineered to safeguard panelboards, load centers, and electrical distribution networks. Built by Eaton Cutler-Hammer, this 400 Amp breaker is designed to handle demanding, three-phase circuits with reliability you can trust in industrial and commercial environments.

Why this part stands out

• Exact part match for fast, worry-free replacements — the 3TA402K is the precise part number you need, minimizing guesswork during maintenance or panel upgrades.
• Three-pole, 400 A protection — ideal for high-current feeders and large distribution circuits in busy facilities.
• Genuine stock from AmpState — access to authentic Eaton components with dependable availability.
• Clear compatibility support — need help confirming fit? Message AmpState to verify compatibility and ensure seamless installation.
• Designed for panelboards, load centers, and electrical distribution — a trusted choice for electricians, panel builders, and maintenance teams managing critical infrastructure.

Use cases and application scenarios

• Maintenance or upgrades of industrial control panels and main distribution panels that require a 400 A, 3-pole breaker.
• Spare part in technician kits to minimize downtime during outages or service calls.
• Replacement during retrofits where exact Eaton 3TA402K fits the existing bus and wiring configuration.

How this compares to non-specific breakers—without naming competitors: having the exact part number matters. It ensures the correct electrical characteristics, mounting orientation, and trip behavior your system relies on, reducing installation delays and compatibility risk for facilities managers and panel builders alike.

Practical care and procurement tips

• Store in a cool, dry environment away from extreme temperatures and moisture to preserve terminals and contact integrity.
• Inspect packaging and terminals for transport damage before installation.
• Before swapping in, confirm the panelboard’s catalog and bus configuration to ensure a perfect fit.

Ready to secure reliable protection with a precise replacement? AmpState has the Eaton Cutler-Hammer 3TA402K 400A 3P Circuit Breaker in stock and ready to ship, with support to confirm fit and ensure you get the exact part you need.