{"product_id":"eaton-cutler-hammer-hkddc3400-400a-3-pole-molded-case-circuit-breaker-bolt-on-mount-600vdc","title":"Eaton Cutler-Hammer HKDDC3400 400A 3-Pole Molded Case Circuit Breaker – Bolt-On Mount – 600VDC","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:5ed05b70-93c0-4ce7-87ee-be76a6b8d824-237\" data-testid=\"conversation-turn-16\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"673d4007-2364-4ef0-9499-9e2115f57d5a\" dir=\"auto\" data-message-model-slug=\"gpt-5-3\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"145\" data-end=\"948\"\u003eThe \u003cstrong data-start=\"149\" data-end=\"182\"\u003eEaton Cutler-Hammer HKDDC3400\u003c\/strong\u003e is a heavy-duty \u003cstrong data-start=\"199\" data-end=\"238\"\u003eK-frame molded case circuit breaker\u003c\/strong\u003e designed to provide dependable protection in \u003cstrong data-start=\"284\" data-end=\"322\"\u003eDC electrical distribution systems\u003c\/strong\u003e. Featuring a \u003cstrong data-start=\"336\" data-end=\"382\"\u003ethermal-magnetic interchangeable trip unit\u003c\/strong\u003e, this breaker ensures accurate overload and short-circuit protection while allowing adjustable trip settings for different operational requirements. With a \u003cstrong data-start=\"539\" data-end=\"568\"\u003e400-ampere rating at 40°C\u003c\/strong\u003e and \u003cstrong data-start=\"573\" data-end=\"606\"\u003ehigh DC interrupting capacity\u003c\/strong\u003e, the HKDDC3400 is well suited for industrial facilities, renewable energy systems, battery storage installations, and other demanding DC power applications. The \u003cstrong data-start=\"768\" data-end=\"795\"\u003ebolt-on mounting design\u003c\/strong\u003e ensures secure installation in electrical panels and switchgear, while the \u003cstrong data-start=\"871\" data-end=\"906\"\u003estandard terminal configuration\u003c\/strong\u003e simplifies wiring and system integration.\u003c\/p\u003e\n\u003ch2 data-section-id=\"3ipjz4\" data-start=\"955\" data-end=\"980\"\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"983\" data-end=\"1013\"\u003eBrand: Eaton \/ Cutler-Hammer\u003c\/li\u003e\n\u003cli data-start=\"1016\" data-end=\"1034\"\u003eModel: HKDDC3400\u003c\/li\u003e\n\u003cli data-start=\"1037\" data-end=\"1087\"\u003eBreaker Type: Molded Case Circuit Breaker (MCCB)\u003c\/li\u003e\n\u003cli data-start=\"1090\" data-end=\"1118\"\u003eFrame Style: HKD (K-Frame)\u003c\/li\u003e\n\u003cli data-start=\"1121\" data-end=\"1148\"\u003eRated Current: 400 Ampere\u003c\/li\u003e\n\u003cli data-start=\"1151\" data-end=\"1176\"\u003eNumber of Poles: 3 Pole\u003c\/li\u003e\n\u003cli data-start=\"1179\" data-end=\"1239\"\u003eTrip Unit Type: Thermal Magnetic Interchangeable Trip Unit\u003c\/li\u003e\n\u003cli data-start=\"1242\" data-end=\"1277\"\u003eMounting Type: Bolt-On Connection\u003c\/li\u003e\n\u003cli data-start=\"1280\" data-end=\"1329\"\u003eTerminal Configuration: With Terminals Standard\u003c\/li\u003e\n\u003cli data-start=\"1332\" data-end=\"1374\"\u003eWarranty: One Year Manufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1381\" data-end=\"1408\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1411\" data-end=\"1432\"\u003eFrame Type: K-Frame\u003c\/li\u003e\n\u003cli data-start=\"1435\" data-end=\"1518\"\u003eTrip Adjustment Range: \u003cstrong data-start=\"1458\" data-end=\"1516\"\u003eAdjustable from 5× to 10× the continuous ampere rating\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1521\" data-end=\"1564\"\u003eOperating Temperature Reference: \u003cstrong data-start=\"1554\" data-end=\"1562\"\u003e40°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1567\" data-end=\"1623\"\u003eProtection Type: Overload and Short Circuit Protection\u003c\/li\u003e\n\u003cli data-start=\"1626\" data-end=\"1708\"\u003eBreaker Construction: Molded insulated case for durability and electrical safety\u003c\/li\u003e\n\u003cli data-start=\"1711\" data-end=\"1775\"\u003eApplication Type: DC power protection and distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"ihrae0\" data-start=\"1782\" data-end=\"1804\"\u003eVoltage and Ratings\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1807\" data-end=\"1837\"\u003eMaximum Voltage: \u003cstrong data-start=\"1824\" data-end=\"1835\"\u003e600 VDC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1840\" data-end=\"1901\"\u003eInterrupting Rating (1 Pole in Series): \u003cstrong data-start=\"1880\" data-end=\"1899\"\u003e42 kA @ 125 VDC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1904\" data-end=\"1966\"\u003eInterrupting Rating (2 Poles in Series): \u003cstrong data-start=\"1945\" data-end=\"1964\"\u003e50 kA @ 250 VDC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1969\" data-end=\"2031\"\u003eInterrupting Rating (3 Poles in Series): \u003cstrong data-start=\"2010\" data-end=\"2029\"\u003e42 kA @ 600 VDC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2034\" data-end=\"2072\"\u003eFrequency Reference (AC): \u003cstrong data-start=\"2060\" data-end=\"2072\"\u003e50\/60 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"we2dfi\" data-start=\"2079\" data-end=\"2094\"\u003eProduct Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"2097\" data-end=\"2134\"\u003eManufacturer: Eaton \/ Cutler-Hammer\u003c\/li\u003e\n\u003cli data-start=\"2137\" data-end=\"2165\"\u003eProduct Series: HKD Series\u003c\/li\u003e\n\u003cli data-start=\"2168\" data-end=\"2193\"\u003eModel Number: HKDDC3400\u003c\/li\u003e\n\u003cli data-start=\"2196\" data-end=\"2218\"\u003eCurrent Rating: 400A\u003c\/li\u003e\n\u003cli data-start=\"2221\" data-end=\"2241\"\u003eNumber of Poles: 3\u003c\/li\u003e\n\u003cli data-start=\"2244\" data-end=\"2270\"\u003eConnection Type: Bolt-On\u003c\/li\u003e\n\u003cli data-start=\"2273\" data-end=\"2317\"\u003eTerminal Type: Standard Terminals Included\u003c\/li\u003e\n\u003cli data-start=\"2320\" data-end=\"2426\"\u003eApplication: Industrial DC power distribution, battery systems, and renewable energy protection circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"rzxvn7\" data-start=\"2433\" data-end=\"2452\"\u003eImportant Note\u003c\/h2\u003e\n\u003cp data-start=\"2453\" data-end=\"2935\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThe product image typically represents a \u003cstrong data-start=\"2494\" data-end=\"2541\"\u003ebase model for identification purposes only\u003c\/strong\u003e, and the final configuration may vary depending on installed accessories or selected options. If accessories are ordered together with the breaker, they can be \u003cstrong data-start=\"2702\" data-end=\"2791\"\u003einstalled according to your specific configuration requirements at no additional cost\u003c\/strong\u003e. Please include the necessary configuration details in the \u003cstrong data-start=\"2851\" data-end=\"2892\"\u003eorder comment section during checkout\u003c\/strong\u003e to ensure proper assembly before shipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e","brand":"Eaton Cutler-Hammer","offers":[{"title":"Certified Reconditioned","offer_id":47512069472505,"sku":"HKDDC3400-CR","price":1899.0,"currency_code":"USD","in_stock":true},{"title":"New Surplus","offer_id":47512069505273,"sku":"HKDDC3400-NS","price":3499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/HKDDC3400_2.webp?v=1773409857","url":"https:\/\/mycircuitbreakers.com\/products\/eaton-cutler-hammer-hkddc3400-400a-3-pole-molded-case-circuit-breaker-bolt-on-mount-600vdc","provider":"My Circuit Breakers","version":"1.0","type":"link"}