{"product_id":"eaton-cutler-hammer-3ta402k-400a-3p-circuit-breaker","title":"Eaton Cutler-Hammer 3TA402K 400A 3P Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing 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.\u003c\/p\u003e \u003cp\u003eWhy this part stands out\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact part match for fast, worry-free replacements\u003c\/strong\u003e — the 3TA402K is the precise part number you need, minimizing guesswork during maintenance or panel upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole, 400 A protection\u003c\/strong\u003e — ideal for high-current feeders and large distribution circuits in busy facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGenuine stock from AmpState\u003c\/strong\u003e — access to authentic Eaton components with dependable availability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility support\u003c\/strong\u003e — need help confirming fit? Message AmpState to verify compatibility and ensure seamless installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for panelboards, load centers, and electrical distribution\u003c\/strong\u003e — a trusted choice for electricians, panel builders, and maintenance teams managing critical infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse cases and application scenarios\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance or upgrades of industrial control panels and main distribution panels that require a 400 A, 3-pole breaker.\u003c\/li\u003e \u003cli\u003eSpare part in technician kits to minimize downtime during outages or service calls.\u003c\/li\u003e \u003cli\u003eReplacement during retrofits where exact Eaton 3TA402K fits the existing bus and wiring configuration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eHow 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.\u003c\/p\u003e \u003cp\u003ePractical care and procurement tips\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eStore in a cool, dry environment away from extreme temperatures and moisture to preserve terminals and contact integrity.\u003c\/li\u003e \u003cli\u003eInspect packaging and terminals for transport damage before installation.\u003c\/li\u003e \u003cli\u003eBefore swapping in, confirm the panelboard’s catalog and bus configuration to ensure a perfect fit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eReady 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.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410881564834,"sku":"3TA402K","price":414.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/eaton-cutler-hammer-3ta402k-400a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}