{"product_id":"square-d-hdl36150u31x-150a-3-pole-circuit-breaker","title":"Square D HDL36150U31X - 150 A, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSquare D HDL36150U31X is a 150 A, 3-pole molded case circuit breaker designed to shield panelboards and load centers from overcurrent and short circuits. Built for durability, its compact molded-case design optimizes panel space without compromising protection.\u003c\/p\u003e \u003cp\u003eThe thermal-magnetic trip unit delivers stable, repeatable protection by combining a thermal element for overload and a magnetic element for short-circuit events. This means predictable tripping behavior across varying temperatures and load conditions, helping prevent nuisance trips and equipment damage.\u003c\/p\u003e \u003ch2\u003eKey advantages\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient molded case\u003c\/strong\u003e fits neatly in residential, commercial, and light industrial panels, freeing up interior space for wiring and future expansion.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e suitable for 3-phase distribution, ideal for small commercial panelboards and load centers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e150 A, robust protection\u003c\/strong\u003e guards branch circuits against overcurrent and short circuits, reducing downtime and equipment wear.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to work with matching Square D OEM load centers and panelboards for reliable, plug-and-play installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments, including lighting, motors, and general electrical equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical specifications at a glance\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HDL36150U31X\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 150 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWho should consider this breaker?\u003c\/h2\u003e \u003cp\u003eElectrical professionals and facility managers working with Square D panels will appreciate the built-in reliability of the HDL36150U31X. If you’re upgrading an aging panel, expanding a 3-phase system, or replacing a failed breaker in a residential, commercial, or light industrial setting, this 3-pole 150 A unit offers a straightforward, code-compliant solution for continuous operation and protection.\u003c\/p\u003e \u003ch2\u003ePractical tips\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eConfirm the replacement breaker is compatible with your specific Square D panelboard or load center model for a seamless fit.\u003c\/li\u003e \u003cli\u003eUse the thermal-magnetic trip as intended: overloads get dissipated by the thermal element while short circuits trigger the magnetic mechanism for a fast interruption.\u003c\/li\u003e \u003cli\u003eSchedule periodic inspection of panel interiors to ensure connections remain tight and insulation is intact, reducing the risk of overheating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355264241826,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-hdl36150u31x-150-a-3-pole-circuit-breaker-ampstate-breakers-681.webp?v=1788746122","url":"https:\/\/www.ampstate.com\/products\/square-d-hdl36150u31x-150a-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}