{"product_id":"140m-k8p-d40-bulletin-140m-k-frame-molded-case-circuit-breaker-allen-bradley","title":"140M-K8P-D40 Bulletin 140M K-Frame Molded Case Circuit Breaker | Allen Bradley","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 140M-K8P-D40\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-capacity motor protection and power distribution solution within the Bulletin 140M family. This K-Frame Molded Case Circuit Breaker (MCCB) handles heavy-duty loads up to 400 Amps, providing essential instantaneous magnetic trip protection for large-scale industrial motors and branch circuits. While the manufacturer has officially discontinued this series, we provide this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal equipment to ensure your legacy systems maintain peak safety and performance standards.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley \/ Rockwell Automation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e140M-K8P-D40\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% Brand New Original\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e400 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e480 VAC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePhase\/Frequency\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3-Pole \/ 60 Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFrame Size\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eK-Frame\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHorsepower Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e90 HP\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTrip Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMagnetic (Mag Trip Only)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMagnetic Trip Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2000 to 4000 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8.80 lbs (4.0 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Short-Circuit Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe integrated magnetic-only trip mechanism monitors current surges instantly. With an adjustable or fixed range between\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2000 and 4000 Amps\u003c\/strong\u003e, the breaker interrupts massive faults before they reach downstream equipment, preventing catastrophic motor failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Power Density:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe K-Frame design packs a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e400 Amp\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecapacity into a relatively compact 8.80 lb housing. This allows engineers to upgrade power distribution in existing control panels without requiring extensive mechanical modifications or larger enclosures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLegacy System Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAs a discontinued component, the 140M-K8P-D40 facilitates direct \"drop-in\" replacement for failed units. This eliminates the need for expensive system re-engineering or the installation of newer, incompatible frames that would require updated mounting hardware and busbars.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized for 90 HP Motors:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifically rated for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e90 HP at 480V\u003c\/strong\u003e, this breaker provides the specific inrush current headroom required for large motor startups, preventing nuisance tripping during high-torque acceleration phases.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSince this model is discontinued, is this a refurbished unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. We guarantee this unit is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal stock. It has never been installed or energized. While Rockwell Automation may no longer produce this frame, our supply consists of factory-sealed surplus inventory.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 140M-K8P-D40 as a main disconnect?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. This Molded Case Circuit Breaker functions effectively as a branch circuit protector or a main disconnect for motor control centers, provided the 400 Amp rating and magnetic trip characteristics align with your local electrical code requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should I check before installing this K-Frame breaker?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEnsure the lug connections and busbar spacing match the K-Frame footprint. Verify that the magnetic trip range (2000-4000A) appropriately protects your specific motor load based on its Locked Rotor Amps (LRA) to ensure the breaker does not trip during normal startup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the magnetic-only trip benefit motor circuits?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn motor applications, a separate overload relay typically handles thermal protection. Using a magnetic-only breaker like the 140M-K8P-D40 prevents \"double-protection\" conflicts, allowing the breaker to focus exclusively on interrupting high-current short circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52803799777589,"sku":"140M-K8P-D40","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/140M-K8P-D402.png?v=1777514275","url":"https:\/\/www.5gplc.com\/products\/140m-k8p-d40-bulletin-140m-k-frame-molded-case-circuit-breaker-allen-bradley","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}