{"product_id":"eaton-kdb3300w-300a-600v-3-pole-circuit-breaker","title":"Eaton KDB3300W - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton KDB3300W is a purpose-built 300 A, 600 V, 3-pole molded case circuit breaker designed to guard your panelboard or loadcenter from overcurrent and short-circuit events. Built for dependable protection, it combines compact form with a reliable thermal-magnetic trip system that delivers stable, repeatable performance across demanding electrical environments.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy the KDB3300W stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient design\u003c\/strong\u003e: The molded-case form maximizes panel real estate, making it ideal for tighter panels or retrofit installations where space is at a premium.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Provides precise overload protection and fast short-circuit clearing with predictable trip curves, reducing nuisance trips while keeping critical circuits safe.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e: Engineered to pair seamlessly with matching Eaton OEM loadcenters and panelboards, ensuring straightforward replacement and reliable coordination within existing panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile protection\u003c\/strong\u003e: Rated for 300 A at up to 600 V, suitable for a wide range of residential, commercial, and light industrial applications requiring robust branch circuit protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOperational reliability\u003c\/strong\u003e: A trusted Eaton design, built to perform consistently under daily use, maintenance cycles, and occasional load surges common in busy facilities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases and how this breaker delivers results\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eResidential panels with heavy service loads\u003c\/strong\u003e: When a home installation demands strong, reliable protection for large feeders or multi-load circuits, the KDB3300W delivers dependable overcurrent protection with compact fitment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCommercial panelboards\u003c\/strong\u003e: Supports three-phase distribution needs in small offices, retail spaces, or light industrial settings, while preserving panel space and simplifying maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLight industrial feeders\u003c\/strong\u003e: Handles higher current demands in distributed circuits, enabling safe operation of equipment and tools connected to protected branches.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePanel upgrades and replacements\u003c\/strong\u003e: Its OEM compatibility minimizes compatibility concerns during upgrades, reducing installation time and downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat problems it solves\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrevents damage from short circuits and overloads by interrupting overcurrent quickly and reliably.\u003c\/li\u003e \u003cli\u003eMinimizes panel clutter and simplifies layouts with a compact molded-case footprint.\u003c\/li\u003e \u003cli\u003eReduces downtime during service upgrades thanks to seamless compatibility with existing Eaton loadcenters and panelboards.\u003c\/li\u003e \u003cli\u003eDelivers predictable protection behavior across varied loads, helping maintain electrical system stability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number\u003c\/strong\u003e: KDB3300W\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e: 300 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles\u003c\/strong\u003e: 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for optimum performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eConfirm panel compatibility with the KDB3300W before installation to ensure correct trip coordination and physical fit.\u003c\/li\u003e \u003cli\u003eLabel protected circuits clearly to reflect the 3-pole protection and maintain clear, safe electrical documentation.\u003c\/li\u003e \u003cli\u003ePlan for future expansions—the compact design preserves space for additional breakers as your load grows.\u003c\/li\u003e \u003cli\u003eSchedule regular inspections of the panel area to catch signs of wear or thermal stress that could affect protection performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor projects requiring durable, high-capacity protection with streamlined installation in a variety of settings, the Eaton KDB3300W from AmpState provides a confident, long-term solution. It combines precise thermal-magnetic protection, panel-friendly design, and OEM compatibility to help you protect people and electrical infrastructure with clarity and efficiency.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349628473506,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-kdb3300w-300-a-600-v-3-pole-circuit-breaker-ampstate-breakers-958.webp?v=1788695693","url":"https:\/\/www.ampstate.com\/products\/eaton-kdb3300w-300a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}