{"product_id":"eaton-kd3300y-300a-600v-3-pole-bolt-on-circuit-breaker","title":"Eaton KD3300Y - 300 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton KD3300Y is a rugged 3-pole bolt-on molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With a robust bolt-on mounting design and a thermal-magnetic trip unit, this breaker stays securely connected and provides stable, repeatable protection across a range of demanding electrical environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e—a rigid connection to the bus minimizes vibration, reducing wear and maintaining reliable continuity in distribution panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e—combines time-delayed thermal protection with instantaneous magnetic tripping for precise, predictable response to overloads and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e—designed to be used with matching Eaton OEM loadcenters and panelboards, ensuring a cohesive, certified fit within your distribution system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple sectors\u003c\/strong\u003e—suitable for residential, commercial, and light industrial applications where dependable protection is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e—ideal for 3-phase systems that require balanced protection across all conductors.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters in real-world setups: when you’re upgrading, retrofitting, or completing a new installation, the KD3300Y delivers consistent protective performance under varying ambient conditions. The thermal-magnetic trip keeps nuisance trips in check while still delivering immediate response when a short circuit occurs, helping safeguard wiring, devices, and downstream equipment.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart Number: KD3300Y\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 300 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases and practical considerations\u003c\/h3\u003e\n\u003cp\u003eFor electricians and facilities managers, the KD3300Y is a reliable choice when you need:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eUpgrading existing panelboards or loadcenters that require a high-current, three-phase protective device.\u003c\/li\u003e \u003cli\u003eDedicated main feeders or feeder protection in commercial spaces where 3-phase distribution is common.\u003c\/li\u003e \u003cli\u003eA bolt-on solution that simplifies installation in setups where vibration resistance and solid mechanical mounting are priorities.\u003c\/li\u003e \u003cli\u003eDurable protection in light industrial environments where consistent trip characteristics matter for uptime and safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the KD3300Y, you’re choosing a proven Eaton design that aligns with OEM panel compatibility and delivers dependable protection across a range of demanding electrical installations. For professionals stocking their electrical distribution inventory, this breaker combines robust construction, precise protection, and straightforward integration into compatible panelboards and loadcenters.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349627523234,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_1eff8956-e9cb-4078-9c3e-6f50e57acae4.png?v=1764151831","url":"https:\/\/www.ampstate.com\/products\/eaton-kd3300y-300a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}