{"product_id":"1489-a1d010","title":"Allen-Bradley 1489-A1D010 - 1A, 277VAC, 1-Pole, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Allen-Bradley 1489-A1D010 — a purpose-built 1A, 277VAC, 1-Pole circuit breaker designed to shield critical circuits in demanding industrial environments. This compact, single-pole device delivers dependable overcurrent protection where it matters most, helping keep distribution panels and motor control centers safe and reliable.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 1A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277VAC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePanelboards, switchboards, and control panels that serve commercial or industrial facilities\u003c\/li\u003e \u003cli\u003eDistribution panels and motor control centers where precise protection for low-current circuits is required\u003c\/li\u003e \u003cli\u003e277V electrical systems common to lighting feeders, control circuits, and small-load applications\u003c\/li\u003e \u003cli\u003eOEM equipment and integration projects needing a reliable, low-amperage protective device\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes this unit stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted protection for low-current circuits:\u003c\/strong\u003e With a 1A rating at 277VAC, this breaker is optimized for small loads, reducing unnecessary trips while safeguarding wiring and devices.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile 1-Pole design:\u003c\/strong\u003e A compact form factor that fits neatly in standard industrial enclosures, enabling flexible deployment across panelboards, switchboards, and control panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable protection in demanding environments:\u003c\/strong\u003e Built for industrial, commercial, and OEM settings where consistent overcurrent protection is essential to safe operation of distribution networks and MCCs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless integration with existing installations:\u003c\/strong\u003e Ideal for upgrading or replacing mismatched protection devices in 1489-series lineups or legacy 1P, 277V circuits without extensive rewiring.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance for selection and use\u003c\/h3\u003e\n\u003cp\u003eChoosing the right protection device is about matching the load profile to the breaker’s rating. The 1489-A1D010 is purposefully tuned for circuits that require modest current protection at 277V, making it a strategic choice for lighting feeders and control circuits within commercial facilities and equipment racks. When sizing the protection for a panel or MCC, verify that the connected circuitry operates safely below the 1A threshold under normal conditions, and anticipate potential startup surges that the 1P design is intended to handle without compromising overall protection.\u003c\/p\u003e \u003cp\u003eInstallation tips for best results:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure the breaker’s voltage and current ratings align with the targeted circuit (277VAC nominal, 1A load or below).\u003c\/li\u003e \u003cli\u003eUse in panelboards, switchboards, or control panels that accept 1-Pole protective devices from the same family or compatibility range.\u003c\/li\u003e \u003cli\u003eIn OEM assemblies, confirm that downstream devices (relays, contactors, small motors) are sized to operate within the breaker’s protection envelope.\u003c\/li\u003e \u003cli\u003eWhen replacing an existing device, opt for a like-for-like 1489-series replacement to preserve panel layout and electrical clearance requirements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for professionals who demand trustworthy overcurrent protection in distribution networks, the Allen-Bradley 1489-A1D010 delivers precise, dependable performance for 1A, 277VAC circuits. Whether you’re reinforcing a control panel, expanding a switchboard, or upgrading an MCC feeder, this 1-Pole circuit breaker provides a clear, purpose-built solution that keeps your electrical system safe and ready for everyday operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":46390810902690,"sku":"1489-A1D010","price":32.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/allen-bradley-1489-a1d010-1a-277vac-1-pole-circuit-breaker-895.webp?v=1788908189","url":"https:\/\/www.ampstate.com\/products\/1489-a1d010","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}