{"product_id":"square-d-mhl366001422-600a-3-poles-thermal-magnetic-molded-case-circuit-breaker-bolt-on-600v","title":"Square D MHL366001422 600A 3 Poles Thermal Magnetic Molded Case Circuit Breaker – Bolt On – 600V","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a042b76-5288-83ab-9b31-14a8befa62a3-15\" data-is-intersecting=\"true\"\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection 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 R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a042b76-5288-83ab-9b31-14a8befa62a3-15\" data-turn-id-container=\"request-6a042b76-5288-83ab-9b31-14a8befa62a3-15\" data-testid=\"conversation-turn-34\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\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\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"a0de069c-47cc-4749-8467-f02c86f84767\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003cp data-start=\"140\" data-end=\"889\"\u003eThe Square D MHL366001422 molded case circuit breaker is a high-performance industrial protection device designed for demanding commercial and industrial electrical distribution systems. Built on the MHL frame style with a thermal magnetic non-interchangeable trip unit, this breaker provides reliable overload and short-circuit protection with stable and consistent operation. It comes equipped with a right-hand 2A-2B auxiliary contact module for monitoring and control functions, along with a left-hand 120–240VAC shunt trip for remote tripping capability. Its rugged molded case design, high interrupting capacity, and bolt-on mounting configuration ensure secure installation, enhanced system integration, and long-term operational reliability.\u003c\/p\u003e\n\u003ch1 data-section-id=\"1u9eso3\" data-start=\"891\" data-end=\"917\"\u003eProduct Specifications\u003c\/h1\u003e\n\u003cul data-start=\"918\" data-end=\"1421\"\u003e\n\u003cli data-section-id=\"1ii30bw\" data-start=\"918\" data-end=\"937\"\u003eBrand: Square D\u003c\/li\u003e\n\u003cli data-section-id=\"t4hrwi\" data-start=\"938\" data-end=\"961\"\u003eModel: MHL366001422\u003c\/li\u003e\n\u003cli data-section-id=\"5nhhf5\" data-start=\"962\" data-end=\"982\"\u003eFrame Style: MHL\u003c\/li\u003e\n\u003cli data-section-id=\"c7nu5h\" data-start=\"983\" data-end=\"1028\"\u003eProduct Type: Molded Case Circuit Breaker\u003c\/li\u003e\n\u003cli data-section-id=\"fsfqyf\" data-start=\"1029\" data-end=\"1063\"\u003eBreaker Type: Thermal Magnetic\u003c\/li\u003e\n\u003cli data-section-id=\"13ufe75\" data-start=\"1064\" data-end=\"1098\"\u003eTrip Unit: Non-Interchangeable\u003c\/li\u003e\n\u003cli data-section-id=\"ikk6f9\" data-start=\"1099\" data-end=\"1130\"\u003eAmperage Rating: 600 Ampere\u003c\/li\u003e\n\u003cli data-section-id=\"1mjvejc\" data-start=\"1131\" data-end=\"1158\"\u003eNumber of Poles: 3 Pole\u003c\/li\u003e\n\u003cli data-section-id=\"156788j\" data-start=\"1159\" data-end=\"1185\"\u003eMounting Type: Bolt On\u003c\/li\u003e\n\u003cli data-section-id=\"1hmc7hb\" data-start=\"1186\" data-end=\"1218\"\u003eMaximum Voltage Rating: 600V\u003c\/li\u003e\n\u003cli data-section-id=\"1w3ac3n\" data-start=\"1219\" data-end=\"1259\"\u003eStandard Lug Type: Line and Load End\u003c\/li\u003e\n\u003cli data-section-id=\"80me2d\" data-start=\"1260\" data-end=\"1309\"\u003eAuxiliary Contact: Right Hand 2A-2B Installed\u003c\/li\u003e\n\u003cli data-section-id=\"xdjuar\" data-start=\"1310\" data-end=\"1356\"\u003eShunt Trip: Left Hand 120–240VAC Installed\u003c\/li\u003e\n\u003cli data-section-id=\"7lk6kf\" data-start=\"1357\" data-end=\"1398\"\u003eOperating Temperature Reference: 40°C\u003c\/li\u003e\n\u003cli data-section-id=\"1am5t8t\" data-start=\"1399\" data-end=\"1421\"\u003eWarranty: One Year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-section-id=\"6g15vf\" data-start=\"1423\" data-end=\"1451\"\u003eTechnical Specifications\u003c\/h1\u003e\n\u003cul data-start=\"1452\" data-end=\"2131\"\u003e\n\u003cli data-section-id=\"tb2vou\" data-start=\"1452\" data-end=\"1529\"\u003eThermal magnetic trip mechanism for overload and short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"15x6vcr\" data-start=\"1530\" data-end=\"1600\"\u003eNon-interchangeable trip unit for fixed protection characteristics\u003c\/li\u003e\n\u003cli data-section-id=\"1jtwudn\" data-start=\"1601\" data-end=\"1703\"\u003eFactory-installed right-hand 2A-2B auxiliary contacts for status signaling and control integration\u003c\/li\u003e\n\u003cli data-section-id=\"hjhupa\" data-start=\"1704\" data-end=\"1789\"\u003eLeft-hand 120–240VAC shunt trip for remote tripping and system protection control\u003c\/li\u003e\n\u003cli data-section-id=\"1c40ja5\" data-start=\"1790\" data-end=\"1861\"\u003eHeavy-duty molded case construction for industrial-grade durability\u003c\/li\u003e\n\u003cli data-section-id=\"26sjiv\" data-start=\"1862\" data-end=\"1930\"\u003eHigh interrupting capacity for enhanced electrical system safety\u003c\/li\u003e\n\u003cli data-section-id=\"mpcv6g\" data-start=\"1931\" data-end=\"1993\"\u003eBolt-on mounting design for secure and stable installation\u003c\/li\u003e\n\u003cli data-section-id=\"qylurg\" data-start=\"1994\" data-end=\"2068\"\u003eDesigned for commercial and industrial power distribution applications\u003c\/li\u003e\n\u003cli data-section-id=\"oey4wb\" data-start=\"2069\" data-end=\"2131\"\u003eReliable performance under high-load electrical conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-section-id=\"amx4xn\" data-start=\"2133\" data-end=\"2156\"\u003eVoltage and Ratings\u003c\/h1\u003e\n\u003cul data-start=\"2157\" data-end=\"2479\"\u003e\n\u003cli data-section-id=\"1ylq5ai\" data-start=\"2157\" data-end=\"2180\"\u003eRated Current: 600A\u003c\/li\u003e\n\u003cli data-section-id=\"14w8n9a\" data-start=\"2181\" data-end=\"2212\"\u003eRated Maximum Voltage: 600V\u003c\/li\u003e\n\u003cli data-section-id=\"1qj7w0a\" data-start=\"2213\" data-end=\"2254\"\u003eInterrupting Capacity: 65kA @ 240 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1eun268\" data-start=\"2255\" data-end=\"2296\"\u003eInterrupting Capacity: 65kA @ 480 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"k2vx72\" data-start=\"2297\" data-end=\"2338\"\u003eInterrupting Capacity: 25kA @ 600 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"32yp48\" data-start=\"2339\" data-end=\"2380\"\u003eInterrupting Capacity: 14kA @ 250 VDC\u003c\/li\u003e\n\u003cli data-section-id=\"1dgz7de\" data-start=\"2381\" data-end=\"2414\"\u003eTrip Setting Range: 3000–6000\u003c\/li\u003e\n\u003cli data-section-id=\"tgz03d\" data-start=\"2415\" data-end=\"2449\"\u003eShunt Trip Voltage: 120–240VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1wi5z73\" data-start=\"2450\" data-end=\"2479\"\u003eFrequency Rating: 50\/60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-section-id=\"15cd7p9\" data-start=\"2481\" data-end=\"2497\"\u003eProduct Data\u003c\/h1\u003e\n\u003cul data-start=\"2498\" data-end=\"3034\"\u003e\n\u003cli data-section-id=\"19mqscg\" data-start=\"2498\" data-end=\"2524\"\u003eManufacturer: Square D\u003c\/li\u003e\n\u003cli data-section-id=\"1ef30z1\" data-start=\"2525\" data-end=\"2574\"\u003eProduct Category: Molded Case Circuit Breaker\u003c\/li\u003e\n\u003cli data-section-id=\"7qtkn1\" data-start=\"2575\" data-end=\"2596\"\u003eSeries: MHL Frame\u003c\/li\u003e\n\u003cli data-section-id=\"o0hedk\" data-start=\"2597\" data-end=\"2625\"\u003eConnection Type: Bolt On\u003c\/li\u003e\n\u003cli data-section-id=\"hxa5y2\" data-start=\"2626\" data-end=\"2643\"\u003eFrame Type: M\u003c\/li\u003e\n\u003cli data-section-id=\"lqk5xt\" data-start=\"2644\" data-end=\"2674\"\u003ePole Configuration: 3 Pole\u003c\/li\u003e\n\u003cli data-section-id=\"qnwbto\" data-start=\"2675\" data-end=\"2734\"\u003eLug Configuration: Line and Load End Terminals Standard\u003c\/li\u003e\n\u003cli data-section-id=\"1irjnth\" data-start=\"2735\" data-end=\"2808\"\u003eInstalled Accessories: 2A-2B Auxiliary Contact, 120–240VAC Shunt Trip\u003c\/li\u003e\n\u003cli data-section-id=\"f2pb05\" data-start=\"2809\" data-end=\"2871\"\u003eCondition Support: Certified Reconditioned and New Surplus\u003c\/li\u003e\n\u003cli data-section-id=\"8u28w9\" data-start=\"2872\" data-end=\"2959\"\u003eIncluded Warranty Coverage: Shipping, repairs, parts, and labor for recertification\u003c\/li\u003e\n\u003cli data-section-id=\"7oiogq\" data-start=\"2960\" data-end=\"3034\"\u003eApplication: Commercial and Industrial Electrical Distribution Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-section-id=\"gbcsds\" data-start=\"3036\" data-end=\"3054\"\u003eImportant Note\u003c\/h1\u003e\n\u003cp data-start=\"3055\" data-end=\"3622\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThe product image shown represents a base model and is intended for identification purposes only. Accessories purchased together with the breaker can be installed at no additional cost according to customer configuration requirements when installation instructions are provided during checkout. Installation, operation, and maintenance must be performed by qualified electrical personnel in accordance with applicable electrical standards and manufacturer guidelines. Warranty coverage excludes damage caused by misuse, improper installation, or normal wear and tear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"New Surplus","offer_id":48397115130105,"sku":"MHL366001422-NS","price":6999.0,"currency_code":"USD","in_stock":true},{"title":"Certified Reconditioned","offer_id":48397115162873,"sku":"MHL366001422-CR","price":4499.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/MHL36600_4f3eda78-e6eb-43f3-916f-1af93c74eec9.webp?v=1778662926","url":"https:\/\/mycircuitbreakers.com\/products\/square-d-mhl366001422-600a-3-poles-thermal-magnetic-molded-case-circuit-breaker-bolt-on-600v","provider":"My Circuit Breakers","version":"1.0","type":"link"}