{"product_id":"square-d-bdl36040-40a-600v-3-pole-circuit-breaker","title":"Square D BDL36040 - 40 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D BDL36040 40A, 600V, 3-pole molded case circuit breaker — a compact, dependable solution designed to shield your panelboards and loadcenters from overcurrent and short-circuit events. Built for reliable protection in residential, commercial, and light industrial settings, this unit fits seamlessly where stability and space efficiency matter most.\u003c\/p\u003e \u003ch3\u003eKey features that make a difference\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design:\u003c\/strong\u003e Maximizes panel space while delivering solid protection, letting you fit more circuits in tight panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Delivers stable, repeatable protection by responding to both overloads and sudden fault currents, reducing nuisance trips and ensuring consistent performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection:\u003c\/strong\u003e Ensures simultaneous disconnection of all three phases for balanced, reliable protection of 3‑phase equipment and motors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible compatibility:\u003c\/strong\u003e Specifically designed to work with matching Square D OEM loadcenters and panelboards, simplifying replacement and upgrade projects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application:\u003c\/strong\u003e Suitable for a range of environments—homes, small businesses, and light industrial setups—where dependable branch circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e BDL36040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmpere rating:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\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\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker is the right choice\u003c\/h3\u003e\n\u003cp\u003eFor projects where space, reliability, and compatibility matter, the Square D BDL36040 delivers predictable performance under real-world conditions. The thermal-magnetic mechanism responds quickly to faults while minimizing unnecessary trips during short inrush events common with motors and compressors. Its 3-pole design offers complete phase protection, which is crucial for maintaining the longevity of 3-phase equipment and ensuring safe operation in commercial and light industrial environments.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew panel installations in small offices or retail spaces that require compact, dependable 3‑phase protection.\u003c\/li\u003e \u003cli\u003eReplacement in existing Square D loadcenters where OEM compatibility ensures a straightforward swap without compatibility concerns.\u003c\/li\u003e \u003cli\u003eProtection for equipment with moderate 3‑phase loads, such as HVAC drives, lighting panels, and small machines in light industrial settings.\u003c\/li\u003e \u003cli\u003e Upgrading a panel where a 40A branch circuit needs robust protection with reliable tripping characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panelboard or loadcenter is rated for 600V systems and supports 3-pole breakers of the same family for best results.\u003c\/li\u003e \u003cli\u003eChoose the 40A rating when protecting circuits with motors, transformers, or other equipment susceptible to inrush that benefits from a thermal-magnetic trip.\u003c\/li\u003e \u003cli\u003eWhen replacing an old breaker, match the line\/load orientation and ensure the replacement is the exact part number family (BDL series) to preserve compatibility.\u003c\/li\u003e \u003cli\u003eHandle with the panel carefully during replacement to maintain proper alignment and secure mounting hardware for reliable operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Square D BDL36040 from AmpState, you’re selecting a trusted, purpose-built solution for protecting your 3‑phase circuits. It combines space efficiency, dependable trip performance, and OEM compatibility into one compact package—helping you keep panels organized, safer, and easier to maintain.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355174391970,"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-bdl36040-40-a-600-v-3-pole-circuit-breaker-ampstate-974.webp?v=1788738794","url":"https:\/\/www.ampstate.com\/products\/square-d-bdl36040-40a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}