{"product_id":"allen-bradley-140-cmn-6300-motor-protection-circuit-breaker","title":"Allen-Bradley 140-CMN-6300 Motor Protection Circuit Breaker","description":"\u003ch1\u003eAllen-Bradley 140-CMN-6300 Motor Protection Circuit Breaker\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 140-CMN-6300\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as the primary\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e140-CMN-6300\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMotor Protection Circuit Breaker utilized to execute thermal overload interruption and magnetic short-circuit isolation across Bulletin 140M motor branch protection platforms. The device combines manual motor switching capability with adjustable trip protection for three-phase feeder circuits operating between 230 VAC and 690 VAC.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e140-CMN-6300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMotor Protection Circuit Breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Family\u003c\/td\u003e\n\u003ctd\u003eBulletin 140M Circuit Breakers Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.30 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot specified in provided documentation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified in provided documentation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive protective device\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Operational Current\u003c\/td\u003e\n\u003ctd\u003e63 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current\u003c\/td\u003e\n\u003ctd\u003e90 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Setting Range\u003c\/td\u003e\n\u003ctd\u003e40-63 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Class\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e230-690 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Frequency\u003c\/td\u003e\n\u003ctd\u003e40-60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnetic Release Current\u003c\/td\u003e\n\u003ctd\u003e890 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Operations\u003c\/td\u003e\n\u003ctd\u003e30,000 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Operations\u003c\/td\u003e\n\u003ctd\u003e5,000 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e20 operations\/hour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size\u003c\/td\u003e\n\u003ctd\u003e#8-14 AWG copper wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTorque Requirement\u003c\/td\u003e\n\u003ctd\u003e6-10 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort Circuit Protection\u003c\/td\u003e\n\u003ctd\u003eIntegrated magnetic trip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards Compliance\u003c\/td\u003e\n\u003ctd\u003eIEC\/EN60947-1, IEC\/EN60947-2, UL508, CSA C22.2 No.14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, CSA, cULus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFirmware Flash Compatibility and Motor Branch Integration\u003c\/h3\u003e\n\u003cp\u003eThe Bulletin 140M series is designed for direct integration with Allen-Bradley motor starter assemblies and industrial branch protection architectures. Mechanical coordination between the MPCB and downstream contactors allows motor feeder isolation without external molded-case breaker assemblies in compact panel layouts.\u003c\/p\u003e\n\u003cp\u003eThermal trip adjustment from 40 A to 63 A permits coordination with varying motor full-load current conditions while maintaining consistent magnetic short-circuit interruption characteristics. The device supports installation within industrial motor control centers using standardized Allen-Bradley mounting and feeder connection arrangements.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 140-CMN-6300 support hot replacement while energized?\u003cbr\u003eA: The breaker is intended for de-energized installation and removal procedures. Mechanical replacement under live feeder conditions is not specified.\u003c\/p\u003e\n\u003cp\u003eQ: What is the function of Trip Class 10 protection?\u003cbr\u003eA: Trip Class 10 defines the thermal overload response timing for motor starting currents and overload conditions in accordance with IEC motor protection requirements.\u003c\/p\u003e\n\u003cp\u003eQ: Can the breaker operate as both a disconnect and overload protection device?\u003cbr\u003eA: Yes. The unit combines manual switching, thermal overload protection, and magnetic short-circuit interruption within a single enclosure.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eVerify conductor sizing before termination. Use only copper conductors within the specified #8-14 AWG range and apply terminal tightening torque between 6 Nm and 10 Nm.\u003c\/p\u003e\n\u003cp\u003eInstall the breaker in a vertical orientation unless alternate mounting positions are approved within the associated control enclosure documentation. Maintain clearance from high-temperature components to prevent thermal drift of overload trip characteristics.\u003c\/p\u003e\n\u003cp\u003eSeparate motor feeder conductors from low-voltage control wiring to reduce electromagnetic coupling during short-circuit interruption events. Confirm that upstream protective coordination matches the breaker interruption characteristics before energization.\u003c\/p\u003e\n\u003cp\u003eAfter installation, perform manual mechanical operation checks and verify adjustable thermal trip settings against the motor full-load current rating prior to commissioning.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43417426722906,"sku":"140-CMN-6300","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/140-CMN-63002.jpg?v=1779780117","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-140-cmn-6300-motor-protection-circuit-breaker","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}