{"product_id":"eaton-kd4300w-circuit-breaker","title":"Eaton | KD4300W | Circuit Breaker | 300A | 4-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton KD4300W circuit breaker is a purpose-built solution for demanding electrical environments where precise protection matters. With a 300 A rating, 4-pole configuration, and a 600 V rating, this OEM-part is ideal for maintenance, retrofit, and replacement projects that require exact spec alignment.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 300 A, delivering reliable overload protection for main feeders and large distribution circuits in industrial panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4-Pole design:\u003c\/strong\u003e Provides complete isolation of all live conductors in 3-phase systems (including neutral where applicable), enabling safer maintenance and clearer fault isolation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V, suitable for demanding industrial distribution networks and equipment designed for higher-voltage operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDefinitive compatibility reference:\u003c\/strong\u003e KD4300W is the most reliable indicator for matching Eaton panels, accessories, and bus systems, reducing guesswork during replacements or retrofits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, and replacement ready:\u003c\/strong\u003e Engineered to align with Eaton’s specifications, ensuring proper protective coordination and minimizing downtime during upgrades or component swaps.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for professionals who manage 3-phase power in manufacturing plants, data centers, and large commercial facilities, the KD4300W helps you maintain a safe, compliant electrical distribution system. When upgrading older protection schemes or replacing a failed breaker, this exact-spec Eaton part delivers peace of mind, consistent performance, and straightforward installation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number KD4300W is the best compatibility reference—use it to verify that this breaker matches your panel catalog and retrofit requirements.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePrepare your panel model and bus configuration to ensure seamless fitment.\u003c\/li\u003e \u003cli\u003eKeep a KD4300W on hand for planned maintenance to reduce downtime and keep power flowing smoothly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46426249298082,"sku":"KD4300W","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-kd4300w-circuit-breaker-300a-4-pole-600v-749.webp?v=1789543192","url":"https:\/\/www.ampstate.com\/products\/eaton-kd4300w-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}