{"product_id":"eaton-cutler-hammer-bd3040-40a-1p-120v-circuit-breaker","title":"Eaton Cutler-Hammer BD3040 40A 1P 120V Circuit Breaker, Plug-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton Cutler-Hammer BD3040\u003c\/strong\u003e is a 40A, 1-pole, 120V plug-on circuit breaker designed for dependable protection in panelboards, load centers, and electrical distribution systems. Built to support replacement projects and spare stocking, the BD3040 helps you keep your bill of materials aligned with the original part number for a seamless install and ongoing reliability.\u003c\/p\u003e \u003ch3\u003eWhy the BD3040 stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-on installation\u003c\/strong\u003e simplifies electrical work by enabling fast, tool-friendly mounting on standard bus bars—so downtime is minimized during replacement or maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOriginal-part compatibility\u003c\/strong\u003e ensures it fits existing panelboards and distribution setups without the guesswork, helping you avoid mismatched breakers and risky substitutions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable protection\u003c\/strong\u003e with a 40-amp rating provides solid overcurrent protection for circuits that require firm, predictable safeguarding in both residential and commercial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBOM alignment\u003c\/strong\u003e—stocking BD3040 keeps your spare inventory consistent with the original design, reducing ordering errors and accelerating rebuilds after faults.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing a blown or worn 1-pole, 120V breaker in existing panelboards and load centers.\u003c\/li\u003e \u003cli\u003eMaintaining BOM fidelity for service vans, maintenance depots, and facilities that rely on Eaton Cutler-Hammer components.\u003c\/li\u003e \u003cli\u003eStocking reliable spares for quick response to electrical distribution issues in commercial spaces, workshops, and small-to-mid-size buildings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton Cutler-Hammer\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e BD3040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Plug-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes this different from other breakers\u003c\/h3\u003e\n\u003cp\u003eInstead of simply listing a spec, the BD3040 emphasizes real-world compatibility and serviceability. Its plug-on design minimizes installation steps, while its alignment with original BOMs helps maintain certified configurations. This means fewer surprises during audits or rebuilds and more consistent performance across your electrical distribution network.\u003c\/p\u003e \u003ch3\u003eSupport and compatibility\u003c\/h3\u003e\n\u003cp\u003eNeed help confirming fit? AmpState offers guidance to ensure the BD3040 matches your panelboard or load center. Reach out to verify compatibility with your exact equipment, and we’ll help confirm the right part number and installation approach so you can proceed with confidence.\u003c\/p\u003e \u003ch3\u003ePractical tips for installation and maintenance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways de-energize the electrical system and follow proper lockout\/tagout procedures before replacing a breaker.\u003c\/li\u003e \u003cli\u003eVerify the panelboard’s listing and ensure a single-pole, 120V configuration aligns with your circuit requirements.\u003c\/li\u003e \u003cli\u003eMatch the BD3040 to your BOM to maintain documentation coherence and future serviceability.\u003c\/li\u003e \u003cli\u003eKeep the spare BD3040 on hand in a dedicated electrical maintenance stock to reduce downtime during outages or faults.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAvailable from AmpState, the Eaton Cutler-Hammer BD3040 is a purpose-built solution for reliable circuit protection, straightforward replacement work, and inventory that stays true to the original design. If you’re planning a panel upgrade, routine maintenance, or simply stocking essential spares, this 40A, 1P, 120V plug-on breaker is a dependable choice for uninterrupted electrical distribution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410917970082,"sku":"BD3040","price":150.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/eaton-cutler-hammer-bd3040-40a-1p-120v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}