{"product_id":"eaton-kd4350-circuit-breaker","title":"Eaton | KD4350 | Circuit Breaker | 350A | 4-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton \u003cstrong\u003eKD4350\u003c\/strong\u003e Circuit Breaker — a rugged, high-current protection device designed for demanding electrical environments. With a 350A rating and a 4-pole configuration, this KD4350 model is built for reliability in maintenance, retrofit, and replacement projects where exact specifications matter. If your goal is to preserve system protection while upgrading components, this breaker delivers a precise fit and consistent performance within Eaton’s protection family.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 350A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 4-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e KD4350\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBest use cases:\u003c\/strong\u003e maintenance, retrofit, and replacement where matching specs are required\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe 4-pole design supports protection for three-phase electrical systems with a neutral, enabling synchronized trip across all conductors. Choosing the \u003cstrong\u003eEaton KD4350\u003c\/strong\u003e helps maintain the original protection scheme of your panel, reducing the risk of mismatched trip characteristics during upgrades or repairs.\u003c\/p\u003e \u003ch3\u003eWho benefits most\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical contractors performing panel retrofits or replacements in industrial or commercial facilities\u003c\/li\u003e \u003cli\u003eFacilities managers seeking a like-for-like spare or a precise compatibility reference to minimize downtime\u003c\/li\u003e \u003cli\u003eMaintenance teams prioritizing exact spec matching to preserve existing protection coordination\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters\u003c\/h3\u003e\n\u003cp\u003eCompatibility is the foundation of reliable protection. The KD4350’s exact amperage and four-pole configuration ensure you preserve trip coordination and current rating—critical for safe, uninterrupted service in high-demand applications. When in doubt, \u003cstrong\u003ethe KD4350 part number is the best reference for compatibility\u003c\/strong\u003e, helping you avoid mismatches that could complicate installations or require panel changes.\u003c\/p\u003e \u003ch3\u003eTips for selection and installation\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways \u003cstrong\u003econfirm fit and ratings before ordering\u003c\/strong\u003e to ensure the breaker matches your panel and bus configuration\u003c\/li\u003e \u003cli\u003eUse the KD4350 as a definitive reference when cross-checking against your existing Eaton equipment or panel catalog\u003c\/li\u003e \u003cli\u003eConsult a licensed electrician to verify proper installation, wiring, and torque specifications appropriate to your system’s standards\u003c\/li\u003e \u003cli\u003eStore spare units in their original packaging in a dry, clean environment to prevent corrosion or contamination\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor projects that demand precise specification alignment, the \u003cstrong\u003eEaton KD4350\u003c\/strong\u003e 350A, 4-pole circuit breaker offers dependable protection, straightforward compatibility, and peace of mind during maintenance, retrofit, or replacement work.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46427386675362,"sku":"KD4350","price":9873.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/eaton-kd4350-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}